2. CPU
The CPU is the brains of the computer where most calculations take place. CPU
stands for Central Processing Unit. In terms of computing power, the CPU is the
most important element of a computer system.
3. RAM
RAM is an acronym for random access memory, a type of computer memory that can
be accessed randomly; that is, any byte of memory can be accessed without touching
the preceding bytes.
4. ROM
ROM ( Read-Only Memory) is "built-in" computer memory containing data that
normally can only be read, not written to. ROM contains the programming that
allows your computer to be "booted up" or regenerated each time you turn it on.
The data in ROM is not lost when the computer power is turned off.
5. Cache
A special high-speed storage mechanism. Cache can be either a reserved section of
main memory or an independent high-speed storage device.
6. Hard Drive
A hard drive stores all your data. It houses the hard disk, where all your files and
folders are physically located. It is a computer storage device, which spins, reads and
writes one or more fixed disk platters.
7. Motherboard
A printed circuit board that is the foundation of a computer, located at the bottom
of the computer case. It allocates power to the CPU, RAM, and all other computer
hardware components. Most importantly, the motherboard allows hardware
components to communicate with one another.
8. Power Supply
The component that supplies power to a computer. Most personal computers can be
plugged into standard electrical outlets.
9. Video Card
A video card connects to the motherboard of a computer system and generates
output images to display.
10. Sound Card
A device that can be slotted into a computer to allow the use of audio components
for multimedia applications.
11. USB
USB is also known as a Universal Serial Bus allows data to be transferred between
devices. USB ports can also supply electric power across the cable to devices
without their own power source.
12. Megahertz
One MHz represents one million cycles per second. The speed of microprocessors,
called the clock speed, is measured in megahertz.
13. Gigahertz
One GHz (abbreviation for gigahertz) represents 1 billion cycles per second. The
speed of microprocessors, called the clock speed, often is measured in gigahertz.
14. Megabytes
A unit of computer memory or data storage capacity equal to 1,048,576 bytes
(1,024 kilobytes or 220 bytes). One million bytes.
15. Gigabytes
Gigabytes s a measure of computer data storage capacity that is roughly equivalent
to 1 billion bytes.Gigabytes is 2 to the 30th power (1,073,741,824) bytes. One
gigabyte is equal to 1,024 megabytes. Gigabyte is often abbreviated as G or GB.
16. Terabytes
A terabyte (TB) is a measure of computer storage capacity that is approximately a
trillion bytes or 1,024 gigabytes (GB).
17. Byte
In decimal systems, kilo stands for 1,000, but in binary systems, akilo is 1,024 (2 to
the 10th power). Technically, therefore, a kilobyte is 1,024 bytes, but it is often used
loosely as a synonym for 1,000 bytes.
18. Bit
A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a
single binary value, either 0 or 1.
19. Kilobyte
In decimal systems, kilo stands for 1,000, but in binary systems, akilo is 1,024 (2 to
the 10th power). Technically, therefore, a kilobyte is 1,024 bytes, but it is often used
loosely as a synonym for 1,000 bytes.
21. VGA
Abbreviation of video graphics array, a graphics display system for PCs developed
by IBM. VGA has become one of the de facto standards for PCs.
22. HDMI
HDMI (High-Definition Multimedia Interface) is an industry standard for creating
audio and video connections between high-definition electronic devices. HDMI
supports two-way digital communication between the video source and the video
display with one cable.
23. DVI
Short for Digital Visual Interface, a digital interface standard created by the Digital
Display Working Group (DDWG) to convert analog signals into digital signals to
accommodate both analog and digital monitors.
24. Auto jack
A socket for plugging in an audio source. Audio jacks are found on many types of
audio equipment and musical instruments that accept external sound sources.
25. Ethernet RJ45
Ethernet, pronounced "E-thernet" (with a long "e"), is the standard way to connect
computers on a network over a wired connection. It provides a simple interface and
for connecting multiple devices, such computers, routers, and switches.
26. Wifi adapter
A device that can be plugged into a USB port to enable wireless access from a
computer to an external Wi-Fi device, as a mobile phone, or to the Internet, via high-
speed broadband, or to enable wireless connectivity in a printer or other peripheral.
27. Bluetooth
This wireless technology enables communication between Bluetooth-compatible
devices. It is used for short-range connections between desktop and laptop
computers, PDAs (like the Palm Pilot or Handspring Visor), digital cameras,
scanners, cellular phones, and printers.
28. Printer
An external hardware output device responsible for taking electronic data stored on
a computer or computing device and generating a hard copy of that data. It accepts
text and graphic output from a computer and transfers the information to paper,
usually to standard size sheets of paper.
29. Monitor
The term "monitor" is often used synonymously with "computer screen" or
"display." The monitor displays the computer's user interface and open programs,
allowing the user to interact with the computer, typically using the keyboard and
mouse.
30. Scanner
A scanner is a device that captures images or documents converts them into digital
data.
31. Keyboard
As the name implies, 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.
32. Mouse
A device that controls the movement of the cursor or pointer on a display screen.
33. Speakers
Speakers are one of the most common output devices used with computer systems.
Some speakers are designed to work specifically with computers, while others can
be hooked up to any type of sound system. Regardless of their design, the purpose of
speakers is to produce audio output that can be heard by the listener.
34. USB Flash Drive
A plug-and-play portable storage device that uses flash memory and is lightweight
enough to attach to a keychain.
