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Explain the functions of computer hardware

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on 8 December 2014

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Transcript of Explain the functions of computer hardware

P1: Explain the functions of computer hardware!
Power supply
Fan and heat sink
A heat sink is a metallic device that sits directly on the CPU, drawing heat away from the chip into its cooler, aluminum, fin-like structure. The CPU fan attaches to the heat sink, pulling air through the fins. By dissipating heat drawn into the heat sink, the CPU fan indirectly cools the processor.
Processors are used to direct the operation of all other hardware devices and execute application instructions. Processors carry out these functions by processing digital information, receiving data and providing data.
The function of the computer motherboard is to act as the main circuit board that connects and communicates to all the devices and components attached.
(Basic input/output system)
To give instructions for the Power-On Self Test (POST). This self test ensures that the computer has all of the necessary parts and functionality needed to successfully start itself, such as use of memory and a keyboard and other components.
The function of power unit is to convert the electrical power (AC) comes from wall socket to a suitable type and voltage (DC) so that each component of a computer works properly.
By Sarah Wong
A graphics card is a computer's data-to-image translator. It takes the binary data from the central processing unit (CPU) and turns it into a screen image.

Graphics card
A sound card also processes audio files in order to provide high-quality playback through computer speakers. It plays voice as well as music files and can handle various audio files formats, including mp3(MPEG-1 or MPEG-2 Audio Layer III), wav (Waveform Audio File Format ), cda (CD Audio Track) and a few more.

Sound card
Network Interface Card (NIC) is a device that allows computers to be joined together in a network, typically a Local Area Network (LAN). Networked computers communicate with each other using a particular protocol or agreed-upon language for transmitting data packets between the different machines or "nodes."
It retrieves and/or stores data on optical discs like CDs, DVDs, and BDs (Blu-ray discs) which hold much more information than classic portable media options like the floppy disk.

Optical drive
A hard drive is a mass storage device found in all PCs (with some exclusions) that is used to store permanent data such as the operating system, programs and user files.
Hard drive
A monitor is the visual output device connected to the computer tower. It displays picture and images in real time, allowing one to interact with the computer, activating and running its programs at will.

a keyboard is basically a board of keys. Along with the mouse, the keyboard is one of the primary input devices used with a computer.
a hand-operated electronic device that controls the coordinates of a cursor on your computer screen as you move it around on a pad; on the bottom of the device is a ball that rolls on the surface of the pad; "a mouse takes much more room than a trackball"
Keyboard & mouse
In computers, a printer is a device that accepts text and graphic output from a computer and transfers the information to paper, usually to standard size sheets of paper. Printers are sometimes sold with computers, but more frequently are purchased separately. Printers vary in size, speed, sophistication, and cost. In general, more expensive printers are used for higher-resolution color printing.
ROM is a type of "built-in" memory that is capable of holding data and having that data read from the chip, but not written to.
Random Access Memory is used by the system to store data for processing by a computer's central processing unit (CPU), also known as the processor.
RAM stores the data in memory cells that are arranged in grids much like the cells are arranged in a spread sheet, from which data, in the binary form of 1's and 0's, can be accessed and transferred at random to the processor for processing by the system's software.

Integrated Drive Electronics or IBM Disc Electronics, IDE is more commonly known as ATA or Parallel ATA (PATA) and is a standard interface for IBM compatible hard drives. IDE is different from the Small Computer Systems Interface (SCSI) and Enhanced Small Device Interface (ESDI) because its controllers are on each drive, meaning the drive can connect directly to the motherboard or controller.

By Sarah Wong
Hope you liked this presentation i made
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