1.1 Systems Architecture

Which of these describes a classic von Neumann architecture?

• There is a common system bus for data and instruction transfer

• Separate buses are used for transferring data and instructions

• An instruction can always be executed in a single cycle

• The CPU can access instructions and read/write data at the same time

Which register holds the address of the next instruction or the address of data to be fetched?

• Memory address register

• Accumulator

• Memory data register

• Program counter

Which of these describes a classic von Neumann architecture?

• The same physical memory address is used for instructions and data

• The CPU can access instructions and read/write data at the same time

• An instruction can always be executed in a single cycle

• Separate physical memory addresses are used for instructions and data

Which register always holds data fetched from the RAM?

• Memory data register

• Memory address register

• Program counter

• Accumulator

One purpose of the control unit is to…

• Keep the internal components of the CPU synchronised

• Remove the need for a hard disk so an SSD can be used instead

• Enable the computer to run more programs than it has physical RAM to hold

• Hold instructions that are frequently used to speed up the computer

Which of these describes a classic von Neumann architecture?

• The CPU cannot access instructions and read/write data at the same time

• Separate physical memory addresses are used for instructions and data

• An instruction can always be executed in a single cycle

• The CPU can access instructions and read/write data at the same time

Which two registers hold data for the CPU?

• Memory Data Register and Accumulator

• Program Counter and Memory Address Register

• Program Counter and Accumulator

• Memory Address Register and Accumulator

Which two registers hold an address for the CPU?

• Program Counter and Memory Address Register

• Memory Data Register and Accumulator

• Program Counter and Accumulator

• Memory Address Register and Accumulator

Which register can only hold the address of the next instruction?

• Program counter

• Accumulator

• Memory Address Register

• Memory Data Register

One purpose of the control unit is to…

• Decode instructions

• Store instructions in the RAM

• Send signals down the address bus

• Execute instructions