Computer Registers Quiz

What is the primary function of registers in a CPU?

• To increase the size of main memory

• To manage power supply to the CPU

• To store data and instructions for quick processing

• To connect the CPU to external devices

Which of the following is NOT a characteristic of registers?

• High speed

• Large size

• Direct access

• Volatility

What does the Program Counter (PC) hold?

• The address of the next instruction to be executed

• The current instruction being executed

• The address of the last executed instruction

• The data to be processed

Which register is used to hold temporary data during processing?

• Instruction Register (IR)

• Accumulator (AC)

• Temporary Register (TR)

• Data Register (DR)

How many bits does the Address Register (AR) have?

• 8 bits

• 12 bits

• 32 bits

• 16 bits

What type of data does the Input Register (INPR) receive?

• 16-bit instruction code

• 8-bit character from an input device

• Temporary data

• Memory address

Which register holds the operand read from memory?

• Data Register (DR)

• Instruction Register (IR)

• Program Counter (PC)

• Accumulator (AC)

What is the role of the internal bus in a CPU?

• To connect the CPU to external devices

• To transmit data, addresses, and control signals

• To store instructions

• To manage power supply

Which of the following registers is responsible for holding the instruction code?

• Output Register (OUTR)

• Instruction Register (IR)

• Data Register (DR)

• Address Register (AR)

What is the fate of data stored in cache memory when the system is powered down?

• It is preserved

• It is written to the hard drive

• It is lost

• It is transferred to RAM