The Processor

Question 1

Describe the role of the control unit.

Answer 1

1) To control operation of fetch-execute cycle.
2) Controls transfer of data between registers.
3) To handle interrupts.

Question 2

Describe:
1) What cache memory is
2) What cache memory is used for
3) How increasing the amount of cache memory can improve the performance of a processor.

Answer 2

1) Cache memory is memory that can be accessed very quickly.
2) Used to store most frequently used data.
3) Instructions stored in cache can be accessed more quickly than instructions in main memory.
4) More data can be stored in the cache so more instructions can be stored.