Studied by 0 people
Looks like no one added any tags here yet for you.
1) What is a computer?
2) How does a computer do its function and through what cycle.
An electronic device which takes input, processes it and executes an output.
A computer does it function through the CPU which FETCHES instructions, DECODES them and EXECUTES them ( Fetch, Decode, Execute Cycle
What is the CPU?
The CPU stands for Central Processing Unit and it is the brain of the computer. This is where the FDE cycle happens.
What is the CPU made up of?
The CPU is made up of:
CU - Control Unit
ALU - Arithmetic Logic Unit
Cache
Registers
What happens in the 1st stage of the F-D-E cycle / Fetch stage?
In the first stage of the F-D-E cycle, the CPU FETCHES the next data and instructions from main memory (RAM).
Then, the instructions will be brought back into the CPU
What happens in the 2nd stage of the F-D-E cycle / Decode stage?
In the Decode stage, the CPU will inspect the instructions and DECODE / WORK OUT what need to be done
What happens in the last stage of the F-D-E cycle / EXECUTE stage?
The CPU EXECUTES / CARRY OUT the instructions which could be :
Getting more data and instructions from main memory (RAM)
Performing a calculation
Storing information into main memory / RAM
What does the control unit do?
The Control Unit
sends SIGNALS to CONTROL how DATA MOVES around the CPU
Co - ordinates the CPU’s operations
can be thought of like being the CPU’s nervous system
