Components Of A Pc

Front 1

Exabyte

Back 1

2 to the 60th power (1,152,921,504,606,846,976) bytes. An exabyte is equal to 1,024 petabytes.

Front 2

Kilobyte

Back 2

When used to describe data storage, KB usually represents 1,024 bytes.

Front 3

Petabyte

Back 3

A petabyte (PB) is 1015 bytes of data, 1,000 terabytes (TB) or 1,000,000 gigabytes

Front 4

Gigabyte

Back 4

2 to the 30th power (1,073,741,824) bytes. One gigabyte is equal to 1,024 megabytes

Front 5

Megabyte

Back 5

When used to describe data storage, 1,048,576 (2 to the 20th power) bytes. Megabyte is frequently abbreviated as M or MB

Front 6

Terabyte

Back 6

2 to the 40th power (1,099,511,627,776) bytes. This is approximately 1 trillion bytes.

Front 7

BIOS

Back 7

Acronym for basic input/output system, the built-in software that determines what a computer can do without accessing programs from a disk. On PCs, the BIOS contains all the code required to control the keyboard, display screen, disk drives, serial communications, and a number of miscellaneous functions.

Front 8

Battery

Back 8

A rechargeable battery used in portable computer devices, such as notebook computers. The most common substances used in computer battery packs are nickel cadmium (Nicad), nickel metal hydride (NiMH), and Lithium Ion.

Front 9

CPU

Back 9

CPU is the abbreviation for central processing unit. The CPU is the brains of the computer where most calculations take place.

Front 10

CMOS

Back 10

Short for complementary metal oxide semiconductor. Pronounced see-moss, CMOS is a widely used type of semiconductor.

Front 11

Cooling Fan

Back 11

The phrase cooling in computing generally refers to the dissipation of large amounts of heat, which is created while a computer system is running. Heat is generated inside the computer tower by various hardware such as CPU, video card or even the hard drive.

Front 12

Expansion Card

Back 12

A printed circuit board that you can insert into a computer to give it added capabilities.

Front 13

Expansion Card Slot

Back 13

An opening in a computer where a circuit board can be inserted to add new capabilities to the computer. Nearly all personal computers except portables contain expansion slots for adding more memory, graphics capabilities, and support for special devices.

Front 14

Hard Drive

Back 14

The mechanism that reads and writes data on a hard disk. Hard disk drives (HDDs) for PCs generally have seek times of about 12 milliseconds or less.

Front 15

Motherboard

Back 15

The main circuit board of a microcomputer. The motherboard contains the connectors for attaching additional boards.

Front 16

RAM

Back 16

Refers to RAM that has been configured to simulate a disk drive. You can access files on a RAM disk as you would access files on a real disk.

Front 17

Audio Out

Back 17

A type of connector found on audio devices used to attach audio components, such as speakers.

Front 18

Keyboard

Back 18

The output for a keyboard

Front 19

Mouse

Back 19

The output for a mouse

Front 20

RJ-45

Back 20

Short for Registered Jack-45, an eight-wire connector used commonly to connect computers onto a local-area networks (LAN), especially Ethernets. RJ-45 connectors look similar to the ubiquitous RJ-11 connectors used for connecting telephone equipment, but they are somewhat wider.

Front 21

FireWire

Back 21

A very fast external bus standard that supports data transfer rates of up to 400Mbps (in 1394a) and 800Mbps (in 1394b). Products supporting the 1394 standard go under different names, depending on the company.

Front 22

Microphone

Back 22

The output for Microphone.

Front 23

Parallel

Back 23

Refers to processes that occur simultaneously. Printers and other devices are said to be either parallel or serial.

Front 24

Serial

Back 24

One by one. Serial data transfer refers to transmitting data one bit at a time

Front 25

Headphones

Back 25

Output For headphones

Front 26

Monitor (HD-15)

Back 26

Another term for display screen. The term monitor, however, usually refers to the entire box, whereas display screen can mean just the screen.

Front 27

RJ-11

Back 27

Short for Registered Jack-11, a four- or six-wire connector used primarily to connect telephone equipment in the United States. RJ-11 connectors are also used to connect some types of local-area networks (LANs), although RJ-45 connectors are more common.

Front 28

USB

Back 28

Short for Universal Serial Bus, an external bus standard that supports data transfer rates of 12 Mbps. A single USB port can be used to connect up to 127 peripheral devices, such as mice, modems, and keyboards.