Module 2

Created by shakiraj 

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Peripheral

Anything connected to your computer

Input devices

to put information into a computer

keyboard

enter information in the form of words, numbers, and punctuation

mouse

you can point to objects, select objects, and move objects

scanner

collects information in the form of pictures

joystick

input device that usually has buttons that can be pressed to send instructions

microphone

used to input audio such as music into a computer

digital camera

captures photographs as digital files that can be uploaded directly to a computer

port

allows users to connect
external input devices to the computer system

output device

information out of a
computer

monitor

displays
information visually, just like a television set

printer

transfer images from a monitor to
paper. For instance, when you key an essay on a computer,
you can then print it out to turn in for class

speaker

carries information in the form of sound

process

The part of the computer that processes
information has many parts that work together

microprocessor

brain of a computer. A computer
makes almost all of its calculations in the microprocessor.
Not all microprocessors are the same

clock speed

the number of calculations the processor can
do each second.

CPU

is made of one
microprocessor in small computers

Memory

where computers keep their information, comes in
the form of computer chips.

RAM

holds information
temporarily

A storage device

is
another place where information is kept in a computer

hard drive

is the most widely used secondary storage device. They can be internal or external

floppy disk

contains a small portable disk inside a plastic cover. Floppy disks can hold up to 1.4 megabytes of information

ZIP disk

has a portable disk inside a plastic case. A ZIP disk can hold 100 to 750 megabytes

Flash memory

uses chips to hold information. You can add information to flash memory in large chunks rather than piece by piece, making storage faster and easier than with other types of memor

Optical disks,

use lasers to read and write information

CD-ROM

optical disk that can hold up to 1 gigabyte of information

DVD-ROM

is a CD-ROM that does not yet contain any information

CD-RW

an optical disk that can record information many times

network

is a group of computers that are connected to each other

Local Area Network (LAN)

is a connected group of computers that are close to one another

Wide Area Network (WAN )

that are not close to each other

operating systems (NOS)

help computers share information

network interface card (NIC

so that the computers can communicate over the network.

server

manages the flow of information on a network

network topology

actual arrangement of computers
in a network

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