1.1.1 ALL CD

Which bus carries signals to co-ordinate all of a computer activities?

• Address
• Control
• Data
• Serial

What is one purpose of the CPU?

• Save instructions
• Make a computer run faster
• Portable storage medium
• Fetch instructions

Which register is connected to the data bus?

• Current Instruction Register
• Memory Data Register
• Interrupt Register
• Memory Address Register

One purpose of the memory data register is to?

• Hold the address of an instruction passed from the program counter
• Hold the results of calculations
• Hold the address of data ready for use by the memory data register
• Hold data fetched from, or to be written to the memory

One purpose of the memory address register is to?

• Hold the data from the memory data register
• Store the result of calculations from the ALU
• Hold the address of data to be sent to the memory data register
• Cache data from the memory data register

What is one purpose of the CPU?

• Define a set of characters the computer understands
• Optimise a set of instructions
• Execute instructions
• Prevent phishing

The three buses that make the systems bus.

• Serial, Data, Address
• Control, Data, Serial
• Conrtol, Serial, Address
• Address, Data, Control

What does it mean if a CPU is quad-core?

• The physical processor chip has 4 duplicate CPUs built in
• The CPU can perform 4 operations at the same time
• There are 4 physically separate processor chips
• The CPU has 6 cores

What does the program counter hold?

• Data being transferred to and from main memory
• The current instruction to be executed
• Address of the next instruction to be executed
• Address of the instruction or piece of data to be fetched or stored

Which part of the F-D-E cycle can be described as, 'the current instruction is carried out.'

• Fetch
• None
• Execute
• Decode