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central processing unit - Coggle Diagram
central processing unit
Immediate Access Store
IAS
Referred to as Main Memory
Stores all programs and data temporarily whilst they are in use
Each memory location has a
unique address assigned to it
Arithmetic Logic Unit
ALU
Carries out basic calculations
Logic Comparisons AND or NOT
Processes data that requires arithmetic calculations to be carried out (+,-,x,÷)
Control Unit
Manages the execution of instructions
Three main jobs:
To decide which instruction to carry out next and fetch it from memory
To decode the instruction (find out what needs to be done)
To execute (follow) the instruction
factors that influence processing
Cache Size
Cache memory can be used to store temporarily frequently used instructions and data
Sits between processor and RAM
The CU will automatically check the cache memory first when fetching an instruction
Clock Speed
Used as an indicator of the speed at which the CPU can operate.
How many instruction cycles the CPU can deal with per second
Processor Core
Ability to run multiple programmes at once
processor core= 1 processor