1. Computer Terminology
List 2

2. Personal Computer = Hardware & Software
Computer machinery
Peripherals: Any computer part, component or accessory
Software
Computer programs
Any program written for the computer

3. CPU: Brains of the computer
The CPU is housed on a tiny silcon chip which contains millions of switches and pathways that help your computer make decisions. The switches control the flow of electricity through the pathways; receives instruction from programs.

4. Central Processing Unit
Common CPU processing speeds:
Intel Celeron: MHz
Intel Pentium II & III: Mhz
Intel Pentium III Xeon: 450 Mhz – 1Ghz
The CPU is the brain of the computer
It processes all the information that runs through the computer.
Runs the operating system, software and device peripherals.
The speed of the processor is a hertz--a cycle per second.

5. Motherboard
A circuit board that mounts into the PC case which houses all the main components. It contains many integral components on a thin plate.

6. Wafer or Chip
A thin, round slice of semiconductor material, typically silicon, from which microchips are made. Silicon is processed into large cylindrical ingots, sliced into ultra-thin wafers and then implanted with transistors before being cut into smaller semiconductor chips

7. RAM & ROM--Memory Terms
Random Access Memory is the computer’s temporary memory.
Volatile: only exists while you are using the program.
When you exit the program all RAM is erased
RAM is measured in bytes--megabytes; usually 16 or 32 MB.

8. Input & Output Devices Input: Output Keyboard, scanner, modem, mouse
Printers, monitors, plotters, speakers, modem.

9. Monitors Monitors are video devices made up of PIXELS
A pixel is equal to one dot on the video screen
Are there more pixels per square inch on a monitor or a TV?
Answer: Monitor

10. Monitors
The quality of monitors are determined by the screen size, resolution and dot pitch.
Dot pitch is the measurement between pixels; the lower the number, the better the resolution.

11. Mouse A point and click device
Select and object on the screen and click or double click to activate the selected object

12. Web Site Addresses Uniform Resource Locator (URL)
the unique address of each Web page
Composed of three parts
Protocol
set of rules computers follow
HTTP
hypertext transport protocol

13. Web Site Address--URL Domain Name Http://www.whitehouse.gov
address where the Web page is located
File Specification
filename and folder name called a path

14. Domain Names Organized by computer groups
.gov stands for government
.edu stands for education
.com stands for commercial
.mil stands for military
.org stands for organization

15. The End