Hardware Von Neuumann Architecture_didactic material_ 1 variant

Name _______________________________ Class ______________________

1)      Name and identify the purpose of the three buses in the CPU.

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

2)      What does the control unit in a CPU do?

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

3)      What is stored in the PC (program counter) in the CPU?

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

4)      What is meant by the term RAM?

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

5)      Why do computers usually contain both RAM and ROM?

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

6)      Why do computers have much smaller cache memory than main memory?

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

7)      List and describe the factors that affect the overall performance of the processor in a computer.

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

8)      Describe the fetch–decode–execute cycle.

.....................................................................................................................................

.....................................................................................................................................

.....................................................................................................................................

9)      For this program in main memory:

a)      what are the contents of the MAR (memory address register) and MDR (memory data register) after the command ‘load data from memory location 4’ in memory location 0 is executed?

............................................................................................................................

b)     what is the value stored in the ALU (arithmetic and logic unit) after the command in memory location 1 has been executed?

............................................................................................................................

c)      what is the value stored in the PC (program counter) after the instruction in memory location 2 has been fetched?

............................................................................................................................