what is information technology? technology that enables information to be used to produce products...

What is Information Technology?

Technology that enables information to be used to produce products and services.

What Is A Computer?

• An electronic device that receives data, processes data, stores data, and produces a result (output).

Information Processing

Cycle

1. Input Device

2. CPU

3. Output Device

4. Storage

Hardware-Physical Parts of the computer

Modem- connects your computer to the Internet

CPU- Central Processing Unit is the brain of your

computer.

Hardware, Hardware

Input, Output, & Storage Devices

• Input device: hardware that allows you to communicate with your computer.

• Output device: hardware that allows your computer to communicate with the user

• Storage device: allows you to store or retrieve information

Computer Input Devices

• Keyboard

• Mouse

• Trackball

• Joystick

• Light Pen

• Pointing Stick

• Touchpad

• Touch Screen

• Bar Code Reader

• Scanner

• Microphone

• Graphics Tablet

• Digital Cameras

Computer Output Devices

• Monitor: screen that displays information such as text, numbers, and pictures.

– Softcopy

• Printer: gives you information from the computer in printed form.

– Hardcopy

• Speakers: allow you to hear voice, music, and other sounds from your computer.

STORAGE

1. CD-ROM

(Compact Disk- Read Only Memory)

2. 3 1/2 “ Floppy Disk

(“A” Drive)

Besides saving to the hard drive, here are some other ways to save:

3. External Storage

( Flash Drive, Memory Stick,

etc.)

Memory

• ROM- Read Only Memory

• RAM- Random Access Memory

(Temporary or working memory)

One unit of computer memory is called a “byte”.

Units of Memory

1

1000

1,000,000

1,000,000,000

1 byte stores one character of data

1000 bytes is a kilobyte

1 million bytes is a megabyte

1 billion bytes is a gigabyte