More than anything, you need to know what you want to use the computer for. Knowing what you will use your computer for helps you determine what type of minimum requirements the computer needs to have. For example, computers that run graphic design programs generally need more memory (RAM) than computers used for simple word processing operations. The size of the software you plan to run will dictate how much memory your computer should have. Be sure to check the inventory of what's on the computer, so you'll know what you're getting. You either have a clone or branded computer.
Computer Terminologies that you need to know:
Here are some basic computer terms that will help you understand what the salesman is talking about:
DVD/CD-ROM Drive:
Most new computers come with a CD-ROM drive as standard equipment. CD's store lots of data and are the normal way to install new programs.
CPU:
The CPU, or central processing unit, is the brains of the computer and performs many of the operations. Most Windows-based programs use a Pentium processor.
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 way of inputting data into the software that you will be operating.
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).
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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, too. Faster Internet speeds are available with DSL or cable connections.
Monitor:
An output device that allows you to see what you are doing. we have LCD and CRT
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 three main types of printers on the market: inkjet, bubble jet and laser. Most inkjets and bubble jets can print color and graphics, and a laser printer offers the best resolution at the highest speed (and price).
RAM:
Computers save data in two ways: on the hard drive (permanently) and in random access memory (temporarily while the software is running).
Scanner:
This device can input 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 recorded 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.
Take note of these four issues on the computer configuration: Hard Disk, Mother Board, Processor, and RAM. If you can get these ones right, others are a bit minimal.
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