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The CPU (central processing unit) - Coggle Diagram
The CPU (central processing unit)
Components
Arithmetic Logic Unit (ALU)
Processes data that needs arithmetic calculations to be carried out
Performs logical comparisons (IF, OR, NOT, AND, etc.)
Control Unit (CU)
Manages the execution of instructions by sending signals to other parts of the CPU
Decides which task to carry out next
Decodes the instructions, and follows them
Immediate Access Store (IAS)
Main memory
Stores programs and data temporarily while they are in use
Instruction are fetched from specific locations in the IAS using an address
The CPU is a microprocessor that processes programs and data by repeatedly fetching an instruction from memory and executing it
Factors affecting performance
Clock Speed
Indicates the speed the CPU can operate at
Measured in GHz (gigahertz)
5GHz means the CPU can perform 5 billion instruction cycles per second
Cache size
Cache data is used to temporarily store frequently used instruction/data
Small capacity
When searching for an instruction, the CPU will check the cache memory first
Cache can be searched through much faster than RAM
Processor cores
A core can be defined as a single processor
A CPU with more cores will be better at multitasking