Inside the Computer

Mr. Rowe Computer Tech

2011-2012

Something goes in

What went in gets changed

What comes out is different

Let’s take a look at some key computer terms and what goes on INSIDE the Grinder

System unitO Sometimes called the chassis. A

box-like case made from metal or plastic that protecs the internal electronic components of the computer from damage.

CPUO Central Processing Unit. Also called

the processor. The electronic device that interprets and carries out the basic instructions that operate the computer.

CPUO Central Processing Unit. Also called

the processor. The electronic device that interprets and carries out the basic instructions that operate the computer.

HertzO One Hertz = one cycle per second. O Megahertz = one millions cycles per

second. The common measure of speed for processors and electronic activities inside the computer.

Hard DriveO A data storage medium that houses

all of the electronic information and software programs on your computer.

Storage devicesO Hardware used to record and retrieve

items to and from a storage medium; often functions as a source of input because it transfers items from storage into memory.

Input devicesO Any hardware component that allows

a user to enter data, programs, commands, and user responses into a computer. Includes the keyboard, mouse, microphone, digital camera, scanner, etc.

Output devicesO Any hardware component that can

convey information to a user. Includes display devices, printers, monitors, speakers, headsets, data projectors, fax machines, etc.

Peripheral devicesO Any external device that attaches to

the system unit such as keyboard, mouse, printer, etc.

Taking a look inside the unit

O http://computer.howstuffworks.com/inside-computer.htm

Scroll down to see the video window; play the video which illustrates a “CPU”