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Identifying Components in a Personal Computer

To fully understand the technicalities behind personal computing technology it is neccessary to understand what each component can do in that big box of metal you power on daily.

The following image is for reference purposes only and it depicts a front view of a desktop personal computer.

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Front View Of A Personal Computer

The Personal Computer at a glance.

Figure 1.1 - The Front View Of A Standard Desktop Personal Computer The CD-ROM or DVD-ROM drive. The computer monitor or display. The floppy disk drive. The hard disk drive. The Power LED. The front panel connectors. The ventillation system. The drive bay. The case.

Hardware Component Description
CD-ROM or DVD-ROM drive

This item can be either a CD-ROM or DVD-ROM optical storage medium. It is capable of reading and writing data to and from optical medium. A CD-ROM drive can house approximately 650 megabytes of data whereas a DVD-ROM drive can house approximately 4.5 gigabytes of data
Computer Monitor
This is the part of the computer that displays useful information in the form of pictures, text, and full screen motion video. A good computer monitor enhances the overall computing experience. A computer monitor's performance is measured in the number of pixels in can display with current standards supporting a display type of 1024x768.
Floppy Disk Drive This is a fixed storage medium capable of reading and writing data onto removable media. A floppy disk can house 1.44 megabytes of data. Floppy diskettes are becoming increasingly obselete. Floppy drives are usually not even incorporated into new desktop computers at present day.
Hard Disk Drive L.E.D This item is a small light that flickers when data is being transferred to and from the internal hard disk drive.
Power L.E.D This item always remains lit when there is power running to the machine. When there is no power running the light will not show.
Front Panel Connectors Front panel connectors allow you to connect a variety of peripheral devices externally without having to crawl inside the back of your computer to make connections. Common uses of front panel connectors include audio, microphone, and line-in for use with multimedia programs on the computer. It's also common for front panel connectors to connect USB and Firewire devices such as hard disk drives, digital cameras, and input devices.
Ventialltion System Ventiallation systems are built into all hardware components to allow for excessive heat to be removed to lower the temperature of the entire computer.
Drive Bay A drive bay is an area in the computer where you can mount a hard disk drive or optical storage medium. On the desktop computer referenced here, there is only one free drive bay; the other drive bay is being occupied by the system's internal optical drive.
Case The case is the big box of metal that holds all the components together. Components are mounted with computer screws designed especially to be fitted within the holes soldered onto the case's design.

 

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Back View Of A Personal Computer

Back of the computer.

Figure 1.2 - The Back View Of A Personal Computer The power supply unit at a glance.

Hardware Component Description
Power Supply Unit On / Off Switch The Power supply unit on off switch provides a way to turn off and on power to the computer.
Power Supply Unit The Power supply unit is the main metal box inside the tower that provides the electrical juice needed for a system to run,
Power Supply Unit Fan The Power supply unit fan provides a ventillation system to dissipate heat through a system.
Voltage Selector The power supply unit voltage selector determines how much power is used. Different parts of the world use different voltage amounts.
PS2 Keyboard Port The PS2 keyboard port provides a means for connecting PS2 keyboards to the back of the system unit.
PS2 Mouse Port The PS2 mouse port provides a means for connecting PS2 mice to the back of the system unit.
USB Ports USB ports provide a means for connecting external devices such as hard drives, modems, backup drives, printers, and scanners to the back of the system unit..
Serial Ports Serial ports provide a means for connecting serial devices such as modems and communication devices to the back of the system unit.
Parellel Port Parellel ports provide a means for connecting devices such as printers and scanners to the back of the system unit.
Case Ventiallation Holes Case ventillation holes provides a means for disipariting heat throughout the system. It also provides an area to mount case fans on the back of the system unit.
Gameport Gameports provide a means for connecting gamepads, joysticks, and controllers to the back of the system unit.
Modem Modems proivde a means for connecting to the Internet, and sending / receiving faxes through the system.
Sound Card Sound cards provide audio output to a set of a computer speakers.
Video Card Video cards provide display output to a computer monitor.
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Identifying Components In The Personal Computer

The components depicted in the illustrations above are further explaind in the following pages:

  1. Identifying Parts of the Power Supply Unit
  2. Identifying Parts Of The Motherboard
  3. Identifying Parts Of The Video Card
  4. Identifying Parts of the Sound Card
  5. Identifying Parts of the Modem

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Identifying Components in a Personal Computer
Front View Of A Personal Computer
Back View Of A Personal Computer
Identifying Components In The Personal Computer
Identifying The Power Supply Unit
Identifying Components of the Power Supply UnitDocument Details

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