Y10 System Architecture Review

What is Clock Speed measured in?

• Bits

• Seconds

• Hertz

• Electrical pulses

Which of the following are main components of the CPU? Click all that apply.

• ROM

• Arithmetic Logic Unit (ALU)

• Control Unit (CU)

• Cache and Registers

• RAM

In Von Neumann Architecture, the stored-program concept stores what in what?

• Program instructions and Data in Secondary Memory

• Data in Memory

• The memory address in registers

• Program instructions and Data in Primary memory

What is a Register?

• A small amount of high-speed read only memory contained within the processor

• A small amount of high-speed random access memory contained within the processor

Sort the following memory types by speed (Slowest to Fastest):

RAM 2. HDD 3. SSD 4. Registers 5. Cache 6. CPU

• 1, 3, 5, 6, 2, 4

• 2, 3, 1, 4, 5, 6

• 2, 3, 1, 5, 4, 6

• 3, 2, 1, 4, 5, 6

Which component of the CPU holds the address of the next instruction to be fetched from memory?

• Program counter (PC)

• Memory address register (MAR)

• Accumulator (ACC)

• Memory Data Register (MDR)

• Arithmetic Logic Unit (ALU)

What does Fetch Decode Execute cycle do?

• Fetches instructions/data from main memory, Decodes instructions, Executes instructions.

• Fetches RAM, Decode programmes, Executes the CPU

• Fetches Instructions, Decodes Instructions, Executes Data.

Tick all options that happen in the FETCH CYCLE?

• PC is incremented

• The Instruction at the MAR address is read from RAM

• The PC value is copied to the MAR

• The instruction in the IR is decoded

• The value in the MDR is written to the address in the MAR.

Tick all options that happen in the EXECUTE CYCLE?

• IR is incremented

• The data at the MAR address is read from RAM

• The ALU performs any calculations required on the ACC

• The instruction in the IR is decoded by the CU

• The value in the MDR is written to the address in the MAR.

Which component of the CPU performs calculations and logical expressions?

• Program counter (PC)

• Memory address register (MAR)

• Accumulator (ACC)

• Memory Data Register (MDR)

• Arithmetic Logic Unit (ALU)