Microprocessor Quiz

For the control unit (in CPU), which of the following functions is correct?

• Increment the content of the PC to point to the next instruction

• Perform sign inversion

• Store temporary information for the current operation of the CPU

• Perform arithmetic and logical operations

What components does the EU block in a microprocessor include?

• Arithmetic Logic Unit (ALU) and Control Unit (CU)

• Arithmetic Logic Unit (ALU), Control Unit (CU), and instruction queue

• Arithmetic Logic Unit (ALU) and instruction queue

• Arithmetic Logic Unit (ALU), Control Unit (CU), and register file (RF)

Considering the control signals from the system bus to the CPU, which of the following statements is correct?

• Interrupt acknowledge signal

• Interrupt request signal

• Memory write control signal

• Memory read control signal

The processor receives instructions from:

• Memory or peripheral devices

• Peripheral devices

• Central Processing Unit (CPU)

• Memory

For the Zero flag (ZF) in the status register (in CPU), its meaning is:

• Set to 1 when the result of an operation is zero

• Set to 1 when the result of an operation is greater than zero

• Set to 1 when the result of an operation is less than zero

• Set to 1 when the result of an operation has a carry

Considering the internal control signals within the CPU, which of the following statements is correct?

• Control data transfer from memory to peripheral devices

• Control data transfer from ALU to memory

• Control data transfer from register to ALU

• Control data transfer from CPU to ALU

For the Carry flag (CF) in the status register (in CPU), which of the following statements is correct?

• Set to 1 if the operation has no carry out of the highest bit

• Set to 1 if the operation has a carry out of the highest bit

• This is an overflow flag for signed numbers

• Not set to 1 when the operation has a carry out of the highest bit

For machine code instructions, the operand can be:

• At least two operands (source operand and destination operand)

• Source operand or destination operand or both source and destination operands or no operand

• Only source operand

• Only destination operand

For the stack, which of the following statements is incorrect?

• It is a memory area with FIFO (First In - First Out) structure

• When adding data to the stack, the stack pointer decreases

• The stack pointer always points to the top of the stack

• It is a memory area with LIFO (Last In - First Out) structure

For machine code instructions, which of the following statements is incorrect?

• Operand specifies the operation to be performed

• Machine instruction consists of two parts: opcode (operation code) and operand

• Opcode specifies the operation that the processor needs to perform

• Operand specifies where the data to be operated on is located