CPU

DANIEL LEBOLO BU
Mind Map by DANIEL LEBOLO BU, updated more than 1 year ago
DANIEL LEBOLO BU
Created by DANIEL LEBOLO BU almost 5 years ago
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CPU
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CPU
1 Arimethic logic unit(ALU)
1.1 Able to perform basic arithemtic operations. Substract multply and divide two numbers
1.2 Able to perform logical operations(AND OR NOT)
2 Control Unit (CU)
2.1 Controls the CPU and is the organizing force
2.1.1 Instruction Register(IR): Holds the instrucion
2.1.2 Program counter(PC) Contains the adress of the next instruction
2.2 Bus: Makes information flow around the CPU
2.2.1 Adress bus: Adresses of locations in the primary memory are transferred
2.2.2 Data bus: Actual data is transferred via this bus
3 Primary Memory
3.1 Cache: Stores frequently used instructions
3.2 RAM: holds data and instructions.
4 Heart of the computer
5 The machine cycle
5.1 Fetch:retrieves instructions of memory
5.2 Decode: Breaks down instruction to parts
5.3 Execute: The instruction is executed
5.4 Writeback: Writes the result of the execute step
5.5
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