Parts Of The Computer

Parts of the Computer References: Yahoo! Images (http://images.search.yahoo.com/) Intoduction to Computers:Parts of a Computer (www.fayette.k12.il.us/99/Intro2Comp/parts.html) Parts of the Computer (library.thinkquest.org/5862/partsof.htm) Wikipedia (en.wikipedia.org) Tekkids 3 Vol.1 Revised Edition tekHigh ICT and Society 2nd Edition

Monitor  It is the screen on your computer

that you look at when you are on the computer.  It can be designed by using CRT, LCD, Plasma, or Penetron.  It is an output device similar to a television set that accepts video signals from a computer and displays information on its screen.  Usually has 2 cords: one for power and the other for connecting to the system unit.

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Keyboard  It is an input device that is used

for typing like a typewriter.  Its basic keys are the modifier keys(Alt, Shift, Ctrl), function keys(F1-F12), cursormovement keys(arrow keys, Page Up, Page Down, Home, End), alphanumeric keys(letters, numbers, Tab, Backspace, Caps Lock, Enter), numeric keypad, and special purpose keys(Esc, Print Screen, Pause, Insert, Delete).  3 types of keyboard: QWERTY keyboard, Dvorak keyboard, dvortyboards.

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Mouse It is an input device used to

point at objects on the computer monitor and select them. It is also used to draw with an art software. It is connected through a wire, infrared, or radio waves. A mouse can be mechanical(uses a rubber ball), or optical(uses a lightemitting diode and photodiodes).

System Unit/System Case It is the main part,

processing unit and devices, of a microcomputer. It is the box that houses the CPU. A system unit includes a board called a motherboard that holds a microprocessor chip (or a CPU), memory chips, and expansion slots.

Motherboard It is the main printed, flat

circuit board in an electronic device such as microcomputers. The board contains expansion slots (sockets) that accept additional boards (expansion Cards). In a microcomputer, the motherboard contains the microprocessor, the primary storage chips (or main memory cards), the buses, and all the chips used for controlling the peripherals.

Main memory/RAM RAM stands for random-

access memory. It allows computers to store and retain information. It is also known as primary memory and internal storage. This is where your computer keeps the information it is using at the moment.

Processor It is the brain of the

computer that handles the flow of data.

Hard disk It is a storage device that

holds the operating system and other programs and data files. It is a magnetic disk on which you can store computer data. It stores a lot of data. Some hard disks are portable.

Floppy disk drive It is a device that reads

and writes a floppy disk. Because of its small capacity, this has been phased out from many computer systems in favor of the more durable CD writer and DVD writer.

CD-ROM/DVD-ROM drive It reads CDs or DVDs. CD-ROM stands for

Compact Disc - ReadOnly Memory. These are examples of Read-only storage. CD-ROMs are capable of delivering digitized sounds, images, and multimedia presentations. 

Printer  It makes a hardcopy of the files you save on your

Dot Matrix

Line Printer

Daisy wheel

Ink printer

Laser printer

Thermal printer

LCD/LED printer

computer.  Kinds of Printers: 1. Dot Matrix works by striking pins against an ink ribbon. 2. Line Printer uses a chain of characters or pins to print one line at a time. 3. Daisy Wheel uses a wheel mechanism pressed against small hammers to print characters on paper. 4. Ink Printer works by spraying ink on paper. 5. Laser Printer uses lasers to print documents. 6. Thermal Printer uses heated pins that leave marks on heated sensitive paper. 7. LCD/LED printer uses liquid crystals or light-emitting diodes to produce marks on a drum where the paper is fed.

Speakers These let you listen to

music played on your computer. With it you hear the sound effects of the video game you are playing.

Thanks for watching! 

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Can you tell some other parts of a Personal Computer?

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This Powerpoint presentation was made by:

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Johanna Liesl SA. Doros

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I – St. Augustine

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