Computer Systems Recap

What is the purpose of the ALU?

• To carry out arithmetic operations

• To carry out logical operations

• To carry out addition operations

• To move data between the CPU and accumulator

A register is a ​ (a)   type of memory which is ​ (b)   in capacity and ​ (c)  

These are found in the ​ (d)   .

• specialist
• general
• small
• large
• very fast
• slow to access
• CPU
• RAM
• Hard disk drive

Which of the following are specialist registers?

Groups:

(a) Registers

,

(b) Not Registers

• RAM

• ACC

• CPU

• PC

• MAR

• MDR

• Cache

Clock speed is frequency of pulses sent by the clock. Clock speed is measured in ​ (a)   . The higher the ​ (b)   the more ​ (c)   can be performed ​ (d)   by the ​ (e)   .

• hertz
• gigabytes
• frequency
• number
• per second
• together
• instructions
• data
• information
• CPU

What component holds the address of the next instruction

• Memory Data Register

• Accumulator

• Memory Address Register

• Program Counter

This holds the memory location of the current instruction being worked on

• Memory Address Register

• Program Counter

• Memory Data Register

• Accumulator

Write the purpose of the accumulator

Write the purpose of the program counter

Write the purpose of the Memory address register

Write the purpose of the memory data register