BASIC COMPUTER CONCEPTS 
The Processor and Chips

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Computer Terms Glossary

What happens when input is received by a computer system?  What hardware might be involved and where does the input go?  Computer systems have a SYSTEM UNIT which includes one or more processing chips such as an Intel Pentium 4, an Intel Celeron, or an AMD Athlon among others.  It also includes drive bays or spaces for hard, floppy, and CD drives as well as slots or spaces for electronic cards such as video cards, sound cards, modem cards, etc.  In addition, the system unit houses a power supply and a fan which keeps the system from overheating.

 

 

The processor is a very fast calculator on a chip, which can do arithmetic operations and comparison operations.  While it does not seem possible that the graphics and windows we see when using a computer, word processing and game software we use,  are the result of only these two operations, it is indeed true.  The processor is referred to as the CPU or central processing unit.                         

 
   

Pentium4 Chip
  Pentium® 4 

AMD Processor Chip
AMD Athlon™

Celeron Processor Chip
 Celeron®

CHIPS

A chip?  A chip is VERY tiny piece of silicon containing transistors and bus lines like those pictured above on the chips.  Bus lines are the electronic pathways along which data, instructions and information travel on the chip.  Chips are mounted on or inserted into the motherboard which contains many bus lines as well.                                                                     

Motherboard Motherboard

The system also includes MEMORY chips as well, known as RAM or random access memory.  This is the temporary storage area for data, instructions and information waiting to be used by the processor chip or other devices.

Another type of chip is the BIOS chip or the Basic Input and Output System chip.  This chip contain information about the type of input and output devices the computer can use such as the maximum size of  the hard drive that the system can accommodate.  It actually contains permanently stored software (instructions), which perform the power-on test when a computer is turned on and load the basics of the operating system which then takes over control of the computer.

BIOS Chip
from computer.howstuffworks.com

A good online tutorial on processors and chips can be found at computer.howstuffworks.com and at the Gateway Tutorial  Service

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Last updated: 2/13/2003
Email:  bholt@nvcc.edu