The CPU Flashcards
1
Q
What is the CPU
A
- central processing unit
- processes all of the data and the instructions
- processing power depends on different characteristics like its clock speed , number of cores and cache size and type
2
Q
CPU has five main parts :
A
- CU
- ALU
- The Cache
- The Clock
- Buses
3
Q
Control Unit
A
- controls flow of data inside the CPU and outside the CPU
- Main job is to execute program instructions by following the fetch-decode-execute cycle
4
Q
Arithmetic Logic Unit
A
- does all the calculations
- does logic comparisons and operators
5
Q
The Cache
A
- very fast memory in the CPU
- expensive compared to RAM
- stores regularly used data
6
Q
The Clock
A
- the clock sends out a signal that continually cycles between 1 and 0
- the signal is used to synchronise when instructions will be carried out
- the number of clock cycles per second is the clock speed
7
Q
Buses
A
- buses are collections of wires that are used to transmit data between components of the CPU
- a processor may have separate buses carrying data, instructions and memory addresses
8
Q
CPU Performance depends on ….
A
- clock speed
- CPU cores
- Cache Size
- Cache Type
9
Q
Overall Performance is affected by ….
A
- RAM
- GPU
