Sunday, September 30, 2007

Quick links

Operating System ABCs
Operating System types
Operating System overviews
Troubleshooting
Operating System Q&A
Operating System definitions
Apple news
Linux / Unix news

Microsoft news

Operating system ABCs

An Operating System, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer Operating System, a computer would be useless.

Operating system types

As computers have progressed and developed so have the types of operating systems. Below is a basic list of the different types of operating systems and a few examples of Operating Systems that fall into each of the categories. Many computer Operating Systems will fall into more than one of the below categories.

GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse. See our GUI dictionary definition for a complete definition. Below are some examples of GUI Operating Systems.

System 7.x
Windows 98
Windows CE

Multi-user - A multi-user Operating System allows for multiple users to use the same computer at the same time and/or different times. See our multi-user dictionary definition for a complete definition for a complete definition. Below are some examples of multi-user Operating Systems.

Linux
Unix
Windows 2000

Multiprocessing - An Operating System capable of supporting and utilizing more than one computer processor. Below are some examples of multiprocessing Operating Systems.

Linux
Unix
Windows 2000

Multitasking - An Operating system that is capable of allowing multiple software processes to run at the same time. Below are some examples of multitasking Operating Systems.

Unix
Windows 2000

Multithreading - Operating systems that allow different parts of a software program to run concurrently. Operating systems that would fall into this category are:

Linux
Unix

Windows 2000

Troubleshooting

Common questions and answers to operating systems in general can be found on the below operating system question and answers. All other questions relating to an operating system in particular can be found through the operating system page.

Linux / Variants
MacOS
MS-DOS
IBM OS/2 Warp
Unix / Variants
Windows CE
Windows 3.x
Windows 95
Windows 98
Windows 98 SE
Windows ME
Windows NT
Windows 2000
Windows XP
Windows Vista









system listing

Below is a listing of many of the different types of operating systems available today, the dates they were released, the platforms they have been developed for and who developed them.

Operating system

Date first released

Platform

Developer

AIX / AIXL Unix / Linux history can be found here. Various IBM
AmigaOS Currently no AmigaOS operating system history. Amiga Commodore
BSD Unix / Linux history can be found here. Various BSD
Caldera Linux Unix / Linux history can be found here. Various SCO
Corel Linux Unix / Linux history can be found here. Various Corel
Debian Linux` Unix / Linux history can be found here. Various GNU
DUnix Unix / Linux history can be found here. Various Digital
DYNIX/ptx Unix / Linux history can be found here. Various IBM
HP-UX Unix / Linux history can be found here. Various Hewlett Packard
IRIX Unix / Linux history can be found here. Various SGI
Kondara Linux Unix / Linux history can be found here. Various Kondara
Linux Unix / Linux history can be found here. Various Linus Torvald
MAC OS 8 Apple Operating System history can be found here. Apple Macintosh Apple
MAC OS 9 Apple Operating System history can be found here. Apple Macintosh Apple
MAC OS 10 Apple Operating System history can be found here. Apple Macintosh Apple
MAC OS X Apple Operating System history can be found here. Apple Macintosh Apple
Mandrake Linux Unix / Linux history can be found here. Various Mandrake
MINIX Unix / Linux history can be found here. Various MINIX
MS-DOS 1.x

MS-DOS history can be found here.

IBM / PC Microsoft
MS-DOS 2.x MS-DOS history can be found here. IBM / PC Microsoft
MS-DOS 3.x MS-DOS history can be found here. IBM / PC Microsoft
MS-DOS 4.x MS-DOS history can be found here. IBM / PC Microsoft
MS-DOS 5.x MS-DOS history can be found here. IBM / PC Microsoft
MS-DOS 6.x MS-DOS history can be found here. IBM / PC Microsoft
NEXTSTEP Apple Operating System history can be found here. Various Apple
OSF/1 Unix / Linux history can be found here. Various OSF
QNX Unix / Linux history can be found here. Various QNX
Red Hat Linux Unix / Linux history can be found here. Various Red Hat
SCO Unix / Linux history can be found here. Various SCO
Slackware Linux Unix / Linux history can be found here. Various Slackware
Sun Solaris Unix / Linux history can be found here. Various Sun
SuSE Linux Unix / Linux history can be found here. Various SuSE
System 1 Apple Operating System history can be found here. Apple Macintosh Apple
System 2 Apple Operating System history can be found here. Apple Macintosh Apple
System 3 Apple Operating System history can be found here. Apple Macintosh Apple
System 4 Apple Operating System history can be found here. Apple Macintosh Apple
System 6 Apple Operating System history can be found here. Apple Macintosh Apple
System 7 Apple Operating System history can be found here. Apple Macintosh Apple
System V Unix / Linux history can be found here. Various System V
Tru64 Unix Unix / Linux history can be found here. Various Digital
Turbolinux Unix / Linux history can be found here. Various Turbolinux
Ultrix Unix / Linux history can be found here. Various Ultrix
Unisys Unix / Linux history can be found here. Various Unisys
Unix Unix / Linux history can be found here. Various Bell labs
UnixWare Unix / Linux history can be found here. Various UnixWare
VectorLinux Unix / Linux history can be found here. Various VectorLinux
Windows 2000 Windows history can be found here. IBM / PC Microsoft
Windows 2003 Windows history can be found here. IBM / PC Microsoft
Windows 3.X Windows history can be found here. IBM / PC Microsoft
Windows 95 Windows history can be found here. IBM / PC Microsoft
Windows 98 Windows history can be found here. IBM / PC Microsoft
Windows CE Windows history can be found here. PDA Microsoft
Windows ME Windows history can be found here. IBM / PC Microsoft
Windows NT Windows history can be found here. IBM / PC Microsoft
Windows Vista Windows history can be found here. IBM / PC Microsoft
Windows XP Windows history can be found here. IBM / PC Microsoft
Xenix Unix / Linux history can be found here. Various Microsoft

Tuesday, September 25, 2007

Mengetahui Kualitas Motherboard

Motherboard adalah salah satu komponen terpenting dalm PC. Apa yang menyebabkan ia menjadi bagian yang terpenting? Apa saja yang perlu diperhatikan dari sebuah motherboard? Dalam rubrik “Know-How” PC Media edisi 10 dan 11/2005 terdahulu, pembahasan sejenis juga telah dibahas. Mungkin sebagian dari Anda masih mengingatnya. Dan sekarang kami sajikan lagi, dengan beberapa update.
Pengertian Motherboard

Dalam komponen PC, motherboard juga sering disebut sebagai mainboard. Juga ada beberapa istilah lain untuk menyebutnya, seperti mobo atau singkatan MB. Tugasnya pada PC adalah sebagai komponen circuit board utama yang menghubungkan banyak komponen lain. Mulai dari CPU/processor, RAM, video card, harddisk, dan seterusnya.
Pada motherboard terdapat BIOS (Basic Input/Output System), yang akan di-loading
kali pertama sistem menyala. BIOS mendefi - nisikan komponen yang terhubung dengan
motherboard.

Apa Saja yang Membuat Motherboard Berbeda Satu dengan yang Lain?

Apa saja yang membuat perbedaan antara motherboard yang satu dengan yang lain. Sebelum membuat pilihan untuk sebuah motherboard, ada beberapa hal yang perlu
diketahui. Berikut adalah beberapa poin penting yang perlu diperhatikan dari sebuah
motherboard.

CPU Socket

Pertama adalah menentukan CPU yang akan digunakan. Ini akan sangat mempengaruhi pilihan motherboard yang akan digunakan. Baik AMD maupun Intel menggunakan susunan pin yang berbeda bada processornya. Pada motherboard, istilah ini biasanya dikenal dengan sebutan AMD platform ataupun Intel platform. Kedua platform
tersebut utamanya akan membedakan socket processor yang digunakan. Untuk sekarang, AMD menggunakan socket 754, 939 dan AM2 untuk processor desktop-nya. Sedangkan, Intel menggunakan LGA775.

Chipset

Chipset juga merupakan bagian penting yang perlu diperhatikan dari sebuah motherboard. Dari chipset akan sangat menentukan dukungan fi tur dan fasilitas yang dapat dimungkinkan oleh motherboard. Sebab pada chipset akan menentukan dukungan seperti penggunaan tipe processor, modul RAM yang digunakan, ketersediaan dukung an
integrated graphic controller, bus link untuk graphic card, dan seterusnya. Pada sebagian motherboard juga menggunakan skenario klasik, dengan menggunakan dua buah chipset, northbridge dan southbrige. Jika northbridge lebih menentukan dukungan untuk CPU, RAM dan bus. Termasuk dukungan untuk digunakannya dual VGA, baik dengan CrossFire maupun SLI. Begitu pentingnya peran chipset, sehingga kami anggap pilihan chipset adalah pilihan terpenting kedua setelah memilih platform processor yang akan
digunakan. Karena chipset adalah bagian yang terintegrasi dengan motherboard, maka tidak mungkin melakukan upgrade chipset tanpa mengganti motherboard secara keseluruhan. Southbridge melayani kebutuhan I/O seperti untuk storage, USB, dan seterusnya. Beberapa dilengkapi dengan controller tambahan untuk dukungan pengguanaan RAID, firewire, dan lain-lain. Produsen chipset memiliki pendekatan yang berbeda untuk hal ini.

Form Factor

Ukuran sebuah motherboard juga berbedabeda. Untungnya, untuk hal ini produsen motherboard mengikuti aturan form factor. Sehingga meskipun ukurannya mungkin saja berbeda, namun ada standar yang harus diikuti. Seperti letak mounting hole, lokasi ketersediaan slot dan konektor. Form factor yang paling banyak digunakan
pada desktop PC adalah ATX. Namun masih ada beberapa ukuran form factor lain yang
juga tersedia. Beberapa di antaranya mungkin

LGA775 untuk Intel dan Socket AM2 untuk AMD adalah socket yang paling banyak digunakan sekarang. sudah Anda kenal.

Pengertian Motherboard

Dalam komponen PC, motherboard juga sering disebut sebagai mainboard. Juga ada beberapa istilah lain untuk menyebutnya, seperti mobo atau singkatan MB. Tugasnya pada PC adalah sebagai komponen circuit board utama yang menghubungkan banyak komponen lain. Mulai dari CPU/processor, RAM, video card, harddisk, dan seterusnya.
Pada motherboard terdapat BIOS (Basic Input/Output System), yang akan di-loading
kali pertama sistem menyala. BIOS mendefi - nisikan komponen yang terhubung dengan
motherboard.

Apa Saja yang Membuat Motherboard Berbeda Satu dengan yang Lain?

Apa saja yang membuat perbedaan antara motherboard yang satu dengan yang lain. Sebelum membuat pilihan untuk sebuah motherboard, ada beberapa hal yang perlu
diketahui. Berikut adalah beberapa poin penting yang perlu diperhatikan dari sebuah
motherboard.

CPU Socket

Pertama adalah menentukan CPU yang akan digunakan. Ini akan sangat mempengaruhi pilihan motherboard yang akan digunakan. Baik AMD maupun Intel menggunakan susunan pin yang berbeda bada processornya. Pada motherboard, istilah ini biasanya dikenal dengan sebutan AMD platform ataupun Intel platform. Kedua platform
tersebut utamanya akan membedakan socket processor yang digunakan. Untuk sekarang, AMD menggunakan socket 754, 939 dan AM2 untuk processor desktop-nya. Sedangkan, Intel menggunakan LGA775.

Chipset

Chipset juga merupakan bagian penting yang perlu diperhatikan dari sebuah motherboard. Dari chipset akan sangat menentukan dukungan fi tur dan fasilitas yang dapat dimungkinkan oleh motherboard. Sebab pada chipset akan menentukan dukungan seperti penggunaan tipe processor, modul RAM yang digunakan, ketersediaan dukung an
integrated graphic controller, bus link untuk graphic card, dan seterusnya. Pada sebagian motherboard juga menggunakan skenario klasik, dengan menggunakan dua buah chipset, northbridge dan southbrige. Jika northbridge lebih menentukan dukungan untuk CPU, RAM dan bus. Termasuk dukungan untuk digunakannya dual VGA, baik dengan CrossFire maupun SLI. Begitu pentingnya peran chipset, sehingga kami anggap pilihan chipset adalah pilihan terpenting kedua setelah memilih platform processor yang akan
digunakan. Karena chipset adalah bagian yang terintegrasi dengan motherboard, maka tidak mungkin melakukan upgrade chipset tanpa mengganti motherboard secara keseluruhan. Southbridge melayani kebutuhan I/O seperti untuk storage, USB, dan seterusnya. Beberapa dilengkapi dengan controller tambahan untuk dukungan pengguanaan RAID, firewire, dan lain-lain. Produsen chipset memiliki pendekatan yang berbeda untuk hal ini.

Form Factor

Ukuran sebuah motherboard juga berbedabeda. Untungnya, untuk hal ini produsen motherboard mengikuti aturan form factor. Sehingga meskipun ukurannya mungkin saja berbeda, namun ada standar yang harus diikuti. Seperti letak mounting hole, lokasi ketersediaan slot dan konektor. Form factor yang paling banyak digunakan
pada desktop PC adalah ATX. Namun masih ada beberapa ukuran form factor lain yang
juga tersedia. Beberapa di antaranya mungkin

LGA775 untuk Intel dan Socket AM2 untuk AMD adalah socket yang paling banyak digunakan sekarang. sudah Anda kenal. (Admi

choose hardware

How to choose hardware

In the following sections we’ll discuss specific pieces of hardware and their brands. However, we need to establish how you’ll go about doing it. First, you need to decide on the processor and motherboard at the same time. Right now, only Intel and AMD make processors. Once you know which brand you want, it’s time to pick the motherboard. A motherboard will define the components you will have to buy. It has specific acceptable specs for RAM, hard drives, and all other add-on cards. Once those two are out of the way, you can choose everything else based on the capabilities of your motherboard. It’s that easy!

Common mistakes

When building a PC, you have to be careful. I don’t mean careful as in wearing latex gloves and a face mask, but careful as in understanding that these are delicate pieces of electronics that are extremely sensitive. All hardware comes with a common static electricity warning label. When you’re installing a part, you must make sure you are not charged with static electricity. The most basic way of eliminating this possibility is to touch a grounded object. If you don’t know what that means, then just grab hold of a metal object that is touching the floor or connected to a wall outlet. Usually you can just grab the computer case. Most retailers sell a static electricity discharger that is just a wrist bracelet with a metal connector. You simply hook the connector to a metal piece somewhere and wear this bracelet around your wrist.

Always make sure components are firmly wired and/or plugged in. For expansion cards like video cards, sound cards, and network cards, you have to make sure that the pins are firmly inside the slot. Always secure an expansion card with a screw. If it happens to dislodge during operation it could be fatal to your system.

Oh, and never start your system without the cooling solution attached to your processor. I’ve done this once, out of curiosity on a system that was pretty close to breaking down. Lets just say that it drove the last nail into the coffin. Modern processors require a heat sink AND a cooling fan. Don’t skimp on this part. It’s good to have one that is both quiet and efficient.

Be sure to read your motherboard’s manual to make sure you’ve got everything hooked up right. Luckily, most connectors can only be inserted in only one orientation. This is ensured with notches or shapes that only fit in a certain way. This will help you avoid a reverse connection that could also wreak havoc with your system. The only exception to this is pin connectors like the ones hooking your motherboard to the power button and reset button. Make sure you’ve got these ones right or you’ll never be able to turn it on!

Hardware philosophies

This is more of an abstract thought, but consider it anyway. Hardware manufacturers WANT your money. They want it bad. They’ll always sell their latest generation components as better and more efficient. In most cases, they’re right. But that doesn’t mean that the new components are worth the price. As a rule of thumb, hardware will usually outpace software development by at least a year. You won’t start encountering software problems due to insufficient hardware for at least a year. By the 2nd and 3rd years, you’ll encounter more and more of these problems, but they still won’t be impossible to get around. By the 4th year, you should be replacing all of your parts anyway. So I’ve always found it cheaper to stay behind the curve by a generation in order to save my money. For instance, the newest generation of video cards are now out by ATI and Nvidia that require PCI-express expansion slots. These are only on the latest motherboards that support PCI-e. If you want to purchase a comparable system that’s one generation behind, you’ll find that the prices are significantly lower. Unless you want the highest-end system now, there’s no shame in purchasing the BEST of the LAST generation. For instance, instead of an ATI X800 XT and PCI-express motherboard, which could run you up to a thousand dollars when the dust has settled, you can get an ATI Radon 9800 Pro on an AGP motherboard for much less.

In my experience, you’ll need to upgrade the core of the system ever four years anyway, and software rarely ever takes advantage of the full capabilities of a system during that time period. You can still enjoy a reasonably powerful system for about three quarters to half the price if you do your research and do a few minor upgrades throughout the years to your next overhaul.

Tuesday, September 18, 2007

all about computer

Sunday, September 16, 2007

computer, computer and computer

Advice about buying a COMPUTER...

* Decide first what you want to DO. Decide then what software is needed. Don't just go for "the default". Having made your own decision about what YOU really want, then decide what machine to get to run the software. (With practice you can write your own software).

* Buy from a place that actually knows about computers, understands the technical things about computers, and is willing to help when things don't quite go right. Be very wary of places that are too tidy, too plush, or look like a 1990s office. They're not necessarily bad, but it important to test the place by asking a lot of technical questions and see if they know what they are talking about, and also to ask for help to see if they are actually willing and helpful rather than just interested in selling. The sort of place that is generally a good place to buy a computer is the sort of place that has loads of junk all over the place and computer boffins poking about inside open cases of computers in bits in full view of the customers. (Continues on the page about Proper computer shops)*

* Do not be fooled into thinking you MUST HAVE the very latest, fastest, snazziest computer. It will be expensive, and will not necessarily be better in ways that really count than something secondhand or a bit slow/old etc.

* Hype on computer products is often false. For example: Fast CD drives are slow! , PC speakers - old is best , and Anomaly in the specification of data storage capacities

* It is the moral responsibility of a place selling a computer to make sure that the buyer gets help on how to sort it out, to a reasonable extent. If the vendor is unhelpful, make sure your friends get to know about it so they don't buy from there!

* The latest, best, and most powerful operating system is currently (2003/07), LINUX, but it is not the best for everyone because not everyone is technically-minded enough.. (see a comparison of operating systems) BUT, any place that sells computers should know that it exists, should have some experience of it, and should give you the option of having it instead of or in addition to various fashionable operating systems which aren't actually very good. To allow for future upgrading and compatibility, computer hardware should be LINUX-FRIENDLY. Avoid win-modems etc.

* Avoid "Windows XP" and any places that insist you have it. If somewhere says it's the only option, then first THAT'S NOT TRUE, and secondly DON'T BUY FROM THERE! This "XP" thing is part of a sinister plot to take over the world and must be confounded. See Palladium. If you're into the clever technical stuff, get Linux, and if not then Windows98 Second Edition is a half-decent solution which is better than some of the later versions. Beware of Vista!

* For a long time there were no links on this site to mainstream places that sold computers as it was considered that a considerable number of them were not proper computer shops but were box-shifters who assumed you could be forced into having Microsoft Windows crippled edition and if there were any problems they would just leave you to get stuffed. However, there is now some GOOD news on this front, and we have managed to find a few places that support Linux and have a fair and reasonable mode of behaviour with customers. Choose wisely! Places that Sell Computers

* If you want to buy a computer just to go on the Internet, you do not need a fast computer or a fast modem, or anything very expensive. I have seen someone buy an old computer for £150 when the modern default option was £1000 and it was about 90% as fast. The reason is because Internet access speed is limited mainly by the phone line and by what's going on at the Internet Service Provider, rather than how fast the processor speed is. Also, Beware of TV Internet - it might not be the full "PROPER INTERNET". A computer is best.

* Nomatter how much you know about computers, or how little you know, get to know a lot of people who are experts and ask them lots of technical questions. This doesn't make you look a fool, because experts aren't born with the knowledge but actually learn it from other people and by having a go, so they've already done a lot of asking of questions.

Buying a Computer

This Life Advice® pamphlet about Buying a Computer was produced by the MetLife Consumer Education Center in cooperation with the U.S. General Services Administration and reviewed by the Consumer Electronics Manufacturers Association (CEMA).


Buying a Home Computer
Deciding on An Operating System
Buy from a Reputable Dealer
What to Consider Before Buying a Computer
Bigger Programs Require More Memory
How Much Should You Spend?
Laptop vs. Desktop Models
Computer Terminology Glossary
Buying Local or Mail Order
Computer Buyer's Checklist
Warranty and Extended Service Plans
Protect Your Computer
Protect Your Data
Learning to Use What You Purchased
Where Will All This Lead?
For More Information

Buying a Home Computer

Buying a home computer can be a bit like buying a car-it's a major purchase decision. There are many makes and models, and many people willing to give advice about what to buy and where to buy it. To make the most of your shopping experience, and sense of the variety of choices facing you, you'll want to do your homework before heading out. And, whether buying new or used, know what you want the computer to do for you and how much you can afford to spend.

Deciding On An Operating System

Computers can be categorized into two basic operating systems or types-those designed primarily for graphics work and those primarily intended for word processing. Although both are capable of either function. To help you decide between the two operating systems, determine whether you will use the computer more for graphics or mainly for producing text, the type of software you want to run and which type of computer it runs on (although most software has versions for both operating systems). If you're buying the computer for your child's use, see what kind of computer is used in his or her classroom. If you want to send files back and forth with your sister, check out her system. Both systems are great- one is not better than the other-but it helps to know what you want to do with your computer before you commit to either type.

Buy from a Reputable Dealer

Buying your computer from a reputable electronics dealer means you're more likely to get a better warranty and better service. The computers they carry have succeeded because of the high-quality of their machines and their service.

What to Consider Before Buying a Computer

How will you use the computer? Do you plan to write papers for a class using word processing software, keep track of your finances or business on a spreadsheet, send electronic mail (e-mail) to relatives across the country, surf the World Wide Web, or just play computer games? Knowing how you'll use your computer will help you determine what type of minimum requirements the computer needs to have.

Bigger Programs Require More Memory

Keep in mind that the size of the software you plan to run will dictate how much memory your computer should have. Consider how you will use your computer, then ask about the software you'll need. A sales associate should be able to tell you how many megabytes of memory you'll need based on your planned computer use. Typically, you'll need a minimum of 64 megabytes of memory to adequately run most programs. Most computer systems come with preloaded software. Be sure to check the inventory of what's on the computer, so you'll know what you're getting.

KEEP IN MIND THAT THE SIZE OF THE SOFTWARE YOU PLAN TO RUN WILL DICTATE HOW MUCH MEMORY YOUR COMPUTER SHOULD HAVE

How Much Should You Spend?

With computers, it's a good rule of thumb to buy as much as you can afford. Depending on your needs, be prepared to spend between $1,000 for an entry-level computer to $3,000 and up for a higher-end computer. You don't have to buy the biggest, fastest or most powerful computer on the market, but you should buy the best system you can- that includes monitor, microprocessor, memory, hard drive, keyboard, printer, etc. You might want to hold off buying any software until you've had a chance to take a look at the software which should come with your new computer.

WITH COMPUTERS, IT'S A G00D RULE OF THUMB TO BUY AS MUCH AS YOU CAN AFFORD . . .

Laptop vs. Desktop Models

After you've made all the decisions about what you want in a computer, you also can choose what type of model you'd like: laptop or desktop. Laptop models are portable, and if you travel a lot and need to bring your computer along, this is the obvious choice. Desktops have larger screens (although you can use a larger screen with a laptop model) and are easily expandable. Laptops are generally regarded as companion computers to desktops, but they are sophisticated enough to be your primary computer. There are some laptops, called notebooks, that weigh less than five pounds.

IF YOU DON'T KNOW A MOUSE FROM A RAM, THEN YOU NEED TO BRUSH UP ON THE LANGUAGE OF COMPUTERS . . .

Computer Terminology Glossary

If you don't know a mouse from a RAM, then you need to brush up on the language of computers. Here's a crash course.

Cache: Cache is another type of memory kindred to RAM. Cache is used by the computer to quickly move data between the RAM and the CPU.

CD-ROM Drive: Most new computers now come with a CD-ROM drive as standard equipment. A CD-ROM drive reads data from a disc. These CDs look like a music CD, but hold data instead of music. CD-ROMs also contain games, dictionaries, recipe files . . . the list is endless.

CPU: The CPU, or central processing unit, is the brains of the computer. Most new Windows based programs use a Pentium processor. New Macs use a different type of CPU called Power PC.

THE CPU, OR CENTRAL PROCESSING UNIT, IS THE BRAINS OF THE COMPUTER . . .

Disk Drive: Virtually all computers come with a disk drive that can read and save information on portable diskettes, also called floppy disks. You can use floppy disks to save information or to load new software onto your computer.

Hard Drive: The hard drive also is called the hard disk. You'll probably never see it because it is nestled inside your computer. It's the computer's electronic filling cabinet, and it stores the computer's operating system, files, programs and documents.

Keyboard: Just like a typewriter keyboard, this device is the primary way of inputting data into many programs.

A KEYBOARD IS THE PRIMARY WAY OF INPUTTING DATA INTO MANY PROGRAMS . . .

Megahertz (MHz): This is the clock speed of the microprocessor. The higher the number, the quicker the information is processed. MHz relates to how many millions of instructions can be processed per second.

Memory: This is the circuitry or device that holds information in an electrical or magnetic form. There is read-only memory (ROM), which is information primarily stored on a disk, and random-access memory (RAM), which is chip-based storage inside the computer. Memory is typically measured in megabytes (MBs).

Modem: This mechanism connects a computer to a phone line so information can be sent from one computer to another or the user can access an on-line service or the Internet. In view of the popularity of the Internet, a modem is now considered basic equipment and comes on practically all new computers. Most modems come with fax capabilities.

Monitor: An output device that allows you to see what you are doing. Most computers come with 14 or 15 inch monitors. This size is good for most people's needs. Larger 17 or 21 inch monitors also are available, but may cost more.

Motherboard: The motherboard is the circuit board that everything in the computer plugs into. The CPU, RAM and cache all plug into the motherboard.

Mouse: The mouse is another input device that makes getting around in your computer easier. It is a handheld object that is good for doing tasks such as moving and pointing to objects on the screen, and can replace the function and control keys of the keyboard.

Printer: A printer is an essential part of the computer if you want a hard copy of your work. There are four types of printers on the market: dot matrix, inkjet, bubble jet and laser. The dot matrix is the most basic. Most inkjets and bubble jets can print color and graphics, and a laser printer offers the best resolution at the highest speed.

RAM: Computers save data in two ways: on the hard drive and in random access memory or internal memory. New computer buyers should look for models with at least 16 MBs of RAM (or more, depending on what types of programs you'll be running). Make sure that the computer can be upgraded.

Scanner: A scanner is a useful accessory to have if you are working with lots of artwork or photos. This device can copy written documents, pictures or photographs directly into your computer. There are three types of scanners: handheld, hopper-feed and flatbed.

Sound Card: This device allows your computer to reproduce music, sounds and voices. Make sure you have a sound card if you're planning to play multimedia games.

Video Card: The video card is the part of the computer that sends the images to the monitor.

YOU HAVE TWO OPTIONS WHEN BUYING A COMPUTER: YOU CAN PURCHASE YOUR EQUIPMENT LOCAL OR THROUGH MAIL ORDER.

Buying Local or Mail Order

You have two options when buying a computer: You can purchase your equipment locally or through mail order. They both have advantages. If you buy from a consumer electronics dealer in your area, you can often get free demonstrations, and you can return to ask questions and buy additional equipment. Mail order computers are generally less expensive. If you have questions, you can call the company's customer service number and speak with a technician on the telephone. If you need to return the computer for repairs, you may have to ship it back to the manufacturer (save the original box and packing materials). Investigate both local and mail-order sources and buy from the one you feel most comfortable with.

Computer Buyer's Checklist

Before you walk into a computer store or call a mail order source, go over the list of the items (hardware and software) that you might consider purchasing. Ask the salesperson questions about the computer you are interested in and jot your notes in the space below.

QUESTIONS / NOTES

Processor type _____________________________________________________________________________________________________________

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Processor Speed in MHz ______________________________________________________________________________________________________

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RAM (memory) ____________________________________________________________________________________________________________

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Cache ____________________________________________________________________________________________________________________

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Hard Drive Capacity_________________________________________________________________________________________________________

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Sound Card _______________________________________________________________________________________________________________

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Monitor: Is it included in the price? _______________________________________________________________________________________________

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Monitor size _______________________________________________________________________________________________________________

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Video Card ________________________________________________________________________________________________________________

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Printer: Is it included in the price?________________________________________________________________________________________________

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Type of Printer (dot matrix, inkjet, bubble jet, laser) __________________________________________________________________________________

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Modem (internal, external, speed) _______________________________________________________________________________________________

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Can you set up a fax or voice mail on the modem? ___________________________________________________________________________________

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Is there a toll-free technical support phone number? __________________________________________________________________________________

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What cables are needed to set up the system? ______________________________________________________________________________________

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Additional accessories that might be useful, e.g., storage cases, furniture, extra cabling, anti-glare screen for monitor?

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Warranty and Extended Service Plans

Look for a computer with a warranty that covers manufacturing defects and other problems. Make sure you understand exactly what is covered under the warranty. Most new computers are covered for a year, and some warranties include on-site maintenance.

Many retailers offer extended service agreements which, in essence, lengthen the warranty. Whether or not you purchase an extended service plan is up to you. Find out what is covered and weigh the price of the warranty against the price of potential repairs.

YOUR COMPUTER IS AN EXPENSIVE PIECE OF EQUIPMENT, SO PROTECT IT FROM POWER SURGES WITH A SURGE PROTECTOR . . .

Protect Your Computer

Your computer is an expensive piece of equipment, so protect it from power surges with a surge protector. A surge protector will blow a fuse if it gets hit by a rush of electricity, thus protecting your computer. If you're using a modem, be sure to get a surge protector with a telephone jack included. Don't expect your surge protector to safeguard your computer against a direct lightning strike. The only sure protection against lightning strikes is to unplug your computer and modem during a thunderstorm.

Protect Your Data

The best way to safeguard the data on your computer (including software) is to back it up onto a disk. If your hard disk fails, at least it won't take all your software and information with it-as long as you've backed them up. Make periodic copies of the information on the hard disk. It's also important to protect your data from viruses. Anytime you use a disk to install a new program, copy files or download a file from the Internet, you are susceptible to a computer virus. It's a good idea to install a virus protection software program on your computer that will review each new file and check for viruses.

THE BEST WAY TO SAFEGUARD THE DATA ON YOUR COMPUTER IS TO BACK IT UP ONTO A DISK . . .

Learning to Use What You Purchased

There's no substitute for sitting down at the keyboard and trying out your new purchase. But be sure to check out introductory computer classes offered through computer stores, colleges, libraries and continuing education programs. Many software programs also offer tutorials which will help explain their specific features and uses.

WITH A NEW COMPUTER YOU WILL FOREVER BE EXPANDING YOUR MENTAL REACH. . .

Where Will All This Lead?

You may surprise yourself at how quickly your computer knowledge can grow. Very soon you may be streamlining your financial records, writing long letters, communicating through e-mail and helping other new computer users. Perhaps a computer will lead to a second career-or maybe your first, a sideline business, a hobby, or a computer club membership. Not only can your computer open all of these possibilities to you, but you will forever be expanding your mental reach.