CPU-Unit4

According to the von Neumann model, _______ are stored in memory.

• only data

• only programs

• data & programs

• neither data nor programs

Which of these are REGISTERS in the CPU? (Tick ALL that are correct)

• Accumulator

• ALU

• Program Counter

• Memory Address Register

• Control Bus Register

What does MAR stand for?

• Main Address Register
• Memory Address Register
• Massive Address Register
• Minimal Age Readable

The small high speed storage areas within the memory and processor are known as..?

• Registers
• Addresses
• Cache
• Buses

Which of the following is not a register?

• CU
• MAR
• MDR
• PC

The Program Counter

• Stores the address of the next instruction in memory

• Stores the address of where the next item will be fetched from

• Stores data fetched from memory, or waiting to be stored in memory

• Stores the result of arithmetic calculations

Memory Address Register (MAR)

• Stores the address of the next instruction in memory

• Stores the address of where the next item will be fetched from

• Stores data fetched from memory, or waiting to be stored in memory

• Stores the result of arithmetic calculations

Memory Data Register (MDR)

• Stores the address of the next instruction in memory

• Stores the address of where the next item will be fetched from

• Stores data fetched from memory, or waiting to be stored in memory

• Stores the result of arithmetic calculations

Accumulator

• Stores the address of the next instruction in memory

• Stores the address of where the next item will be fetched from

• Stores data fetched from memory, or waiting to be stored in memory

• Stores the result of arithmetic calculations

The Arithmetic Logic Unit (ALU)

• Carries out numerical calculations and logical decisions

• Calculates the different items of number data stored within the Accumulator and converts them into logical decisions

• Calculates graphic data as they are only found within GPU units.

• Calculates the flow of execution in a program and decodes instructions into small steps to be carried out by the program counter.