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The following online study guide is designed to help you with your Comptia A+ test prep. You can discuss any questions or comments that you may have, either on these study guides or on the Comptia A+ test on our community forum.
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Components of CPU  |
The CPU typically contains 2 components.
- The Control Unit:
- This unit coordinates the many operations of a computer system.
- It receives messages from INPUT devices like Harddisk, Mouse and keyboard.
- It then decodes the instruction from input devices and sends them to the ALU(Arithmetic Logic Unit) to be acted upon.
- Finally it sends the processed information into storage or to OUTPUT devices (like your screen or printer).
- The ALU (Arithmetic Logic Unit):
This is where the information is actually processed. The ALU can do:
- calculations (adding, subtracting, multiplying and dividing).
- logic functions (comparing numbers, letters or special characters and
then making decisions based on the results.)
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