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
Input Device CPU Output Device Storage
Hardware-Physical Parts of the computer
Hardware, Hardware Modem- connects your computer to the Internet
CPU- Central Processing Unit is the brain of your computer. The Brain!!!!!!!
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
Touch Screen Bar Code Reader Scanner Microphone Graphics Tablet Digital Cameras Keyboard Mouse Trackball Joystick Light Pen Pointing Stick Touchpad
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 Besides saving to the hard drive, here are some other ways to save: 1. CD-ROM (Compact Disk- Read Only Memory) /2 “ Floppy Disk (“A” Drive) 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 byte stores one character of data 1
1000 bytes is a kilobyte 1000 1 million bytes is a megabyte 1,000,000 1 billion bytes is a gigabyte 1,000,000,000
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