3367122
Description
Mind Map by DANIEL LEBOLO BU, updated more than 1 year ago
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Created by DANIEL LEBOLO BU
over 8 years ago
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CPU
- Arimethic logic unit(ALU)
- Able to perform basic arithemtic operations. Substract
multply and divide two numbers
- Able to perform logical operations(AND OR
NOT)
- Able to perform basic arithemtic operations. Substract
multply and divide two numbers
- Control Unit (CU)
- Controls the CPU and is the organizing force
- Instruction Register(IR): Holds the
instrucion
- Program counter(PC) Contains the adress of the
next instruction
- Instruction Register(IR): Holds the
instrucion
- Bus: Makes information flow around the CPU
- Adress bus: Adresses of locations in the primary memory
are transferred
- Data bus: Actual data is transferred via this bus
- Adress bus: Adresses of locations in the primary memory
are transferred
- Controls the CPU and is the organizing force
- Primary Memory
- Cache: Stores frequently used instructions
- RAM: holds data and instructions.
- Cache: Stores frequently used instructions
- Heart of the computer
- The machine cycle
- Fetch:retrieves instructions of memory
- Decode: Breaks down instruction to parts
- Execute: The instruction is executed
- Writeback: Writes the result of the execute step
- Fetch:retrieves instructions of memory
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