

Central Processing Unit
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Computers
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9th Grade
•
Hard
ICT Assessments
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INPUT, OUTPUT, STORAGE, PROCESSING
By ICT Assessments
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A central processing unit (CPU) is the electronic brain of a computer
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Parts of the CPU
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Control Unit (CU): Directs how the computer works. This is done by:
a. Fetching(searching)
b. Decoding (Interpreting instructions)
c. Executing (Performing according to instructions).
Arithmetic and Logic Unit (ALU): Does all the math (addition, subtraction, etc.) and logical decisions (like comparing numbers).
Registers/Memory: Small, fast storage inside the CPU that holds data, instructions, and results while the computer is working.
INPUT, OUTPUT, STORAGE, PROCESSING
By ICT Assessments
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