The document defines and describes common computer hardware components and related terms. It explains that the CPU processes all information in a computer and is often called the "brain". RAM allows temporary storage and immediate access to required data, while ROM retains its contents when the computer is turned off. Other components described include the cache, hard drive, motherboard, power supply, video/graphics card, sound card, and devices for measuring speed and storage such as kilohertz, megabytes, and gigabytes. Interface types like USB, VGA, HDMI, DVI, and audio jacks are also outlined. Finally, common peripheral devices such as printers, monitors, scanners, keyboards, mice, speakers, and USB flash drives are

1. Computer term : Glossary

2. CPU (Central processing unit)
The CPU is the part of a
computer that is
commonly referred to
as the “brain” because
it process everything in
a computer.

3. RAM (Random access memory)
RAM is a type data storage
that allow files to be written
and read at a short notice. Also
RAM allows your PC immediate
access to data it requires

4. ROM (Read only memory)
ROM is memory chip that
cannot have it data
removed. Unlike RAM, ROM
retains its contents even when
the computer when the
computer is turned off.

5. Cache
Cache is a component that
stores data can be severed
faster. The data stored in a
cache might be the result of an
earlier computation.

6. Hard drive
Storage is the hard
drive’s responsibility.
Everything you keep on
your computer is on a
hard drive.

7. Motherboard
The motherboard itself is a
printed circuit board that
allow the CPU, RAM, and all
other computer hardware
components to
communication with each
other.

8. Powering unit
A power supply unit
converts main AC to low
voltage regulated DC
power for the internal
components of a
computer.

9. Video card
A video card connects
to be the motherboard
of a computer system
and generates output
images to display. Video
cards are also referred
to as graphics cards.

10. Sound card
A sound card is an internal
computer expansion card
that facilitates economical
input and output of audio
signals to and from a
computer under control of
computer programs.

11. Speed measurement
Kilohertz
Megahertz
Gigahertz
Electromagnetic radiation is often
described by its frequency – the number
of oscillations of the perpendicular
electric and magnetic fields per second
– expressed in hertz. Radio frequency
radiation is usually measured in kilohertz
(kHz), megahertz (MHz), or gigahertz
(GHz).

12. Storage measurement
Megabytes
Gigabytes
Terabytes
Byte
Bit
Kilobyte
Kilobit
In computer and telecommunications, a unit of
information is the capacity of some standard data
storage system or communication channel, used to
measure the capacitates of other systems and
channels. In information theory, units of information
are also used to measure the information contents
or entropy of random variables.

13. USB (Universal serial bus)
USB is an industry standard
developed in the mid 1990s
that define cable, connectors
and communication protocols
used in a bud for connection,
communication, and power
supply between computers and
electronic devices.

14. VGA (Video Graphic Array)
VGA refers specifically to the display hardware
first introduces with the IBM PS/2 line of
computers in 1987, but through its widespread
adoption has also come to mean either an
Amplitude Modulated computer display
standard, the 15 – pin D – subminiature VGA
connector or the 640x480 resolution itself

15. HDMI (High – Definition
Multimedia Interface)
HDMI is a proprietary audio/video
interface for transferring
uncompressed video data and
compressed or uncompressed
digital audio data from an HDMI –
compliant source device, such as
display controller, to a compatible
computer monitor, video projector,
digital television, and etc.

16. DVI (Digital visual
interface)
DVI is a video display
interface developed by the
Digital Display working
Group (DDWG). The digital
interface is used to connect
a video source, such as a
display controller to a
display device, such as a
computer monitor.

17. Audio Jack
Audio jacks are found on
many types of audio
equipment and musical
instruments that accept
external sound sources. In a
car or truck, ab audio jack,
also called a “media jack” or
“auxiliary (AUX) jack,” is a
mini-phone socket that
connects any portable music
player to the vehicle's
amplifier and speakers.

18. Ethernet cable
Ethernet cables connect your
computer to your internet modem.
They are usually 6 feet long and
come in an assortment of colors.

19. Wi-Fi Adapter
Wi-Fi Adapter is a product that
let your computer to connect
to a local Wi-Fi network . It
would broadcast a signal
which local devices can pick
up and relay.

20. Bluetooth
Transfer Files Wirelessly Between
Mobile Devices and Computers.
You can pair a smartphone or
tablet and a laptop or Bluetooth
enabled PC together and use
Bluetooth to wirelessly send files
back and forth.

21. Printer: 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.
Monitor: A monitor usually comprises
the display device, circuitry, casing,
and power supply.
Scanner: A scanner is a device that
captures images from photographic
prints, posters, magazine pages, and
similar sources for computer editing
and display.
Keyboard: In computing, a
computer keyboard is a typewriter-style
device which uses an arrangement of
buttons or keys to act as a mechanical
lever or electronic switch.

22. Mouse: A computer mouse is a pointing
device (hand control) that detects two-
dimensional motion relative to a surface. This
motion is typically translated into the motion
of a pointer on a display, which allows for a
fine control of the graphical user interface.
Speaker: Speaker is a device that let you
translate electrical signal from your
computer into sound or music.
USB flash drive: USB flash drives are often used
for the same purposes for which floppy disks or
CDs were once used, i.e., for storage, data
back-up and transfer of computer files.