Cpu

Front 1

Purpose of a CPU

Back 1

'brain of the computer'
processes data
decision-maker

Front 2

Fetch - Decode - Execute

Back 2

Fetch - Places items to be fetched on the adress bus. ata travels to the CPU from main memory on the data bus.
Decode - CPU decodes the data in preparation of the next step. Each CPU has a different 'instruction set'

Front 3

Fetch - Decode - Execute

Back 3

Fetch - Places items to be fetched on the adress bus. ata travels to the CPU from main memory on the data bus. Stored in temporary registers within itself.
Decode - CPU decodes the data in preparation of the next step. Each CPU has a different 'instruction set'
Execute - The CPU carries out the instruction upon the data.

Front 4

Parts of a CPU

Back 4

Control Unit - Controls & moniters hardware. Controls input & output. Controls the flow of data within the CPU.
Immidiate Access Store (IAS) - Holds data that is immidiately needed by the CPU.
Arithmetic & Logic Unit (ALU) - Calculations are performed here (1+1=2) Logic is also done here (1<10)

Front 5

Clock Speed

Back 5

1 Instruction performed every cycle. Measured in Hz - cycles per second.
More cycles - faster, but uses more power and gets hotter.
Overclocking - modified CPU to go faster. Uses more power and gets hotter.

Front 6

Cores

Back 6

More cores = more CPUs
Shares the load between the two.

Front 7

Cache

Back 7

The cache is a momory storage device very close to the CPU to make it faster to store the information.