HDLP COMPUTER

Question 1

What happens in the control unit?

Answer 1

Where the arithmetic and logic operations take place

Question 2

How many instructions would be carried by a 50GHz processor?

Answer 2

50 billion

• REMEMBER GHZ IS 10^9

Question 3

What is stored in a computer’s memory?

Answer 3

Data and instructions

Question 4

What is the purpose of the program counter?

Answer 4

To store the memory address of the next instruction to be processed

Question 5

What is ROM usually used to store?

Answer 5

Start-up instructions

Question 6

State three components of the CPU

Answer 6

Data Bus
ALU
Cache

Question 7

Describe the purpose of cache

Answer 7

Fast access speeds, data from frequently used instructions/temporary programs are stored there

Question 8

Difference between system software and application software

Answer 8

Ss- manages computer hardware and is necessary for the computer to run
Application software - deals with user end task (not needed for computer system to run)

Question 9

Functions of operating systems

Answer 9

Scheduling 
memory management 
allocation of resources
security management 
device drawers 
filing system 
user interface