1.1.1b) Understanding the Fetch-Decode-Execute Cycle

What are the two critical components inside a typical desktop computer?

• Hard Drive and Power Supply

• Keyboard and Mouse

• Monitor and Speaker

• Memory and Central Processing Unit

What does the program counter do in the fetch stage?

• Stores the result of a calculation

• Sends a read signal to the main memory

• Holds the address of the next instruction to be executed

• Decodes the fetched instruction

What is the role of the Memory Address Register?

• It holds the data to be processed

• It decodes the instructions

• It stores the address of the current instruction

• It sends the address down the address bus to main memory

What happens during the decode phase of the fetch-decode-execute cycle?

• The instruction is broken down into the opcode and the operand

• The instruction is executed

• The program counter is incremented

• The instruction is fetched from memory

What is the purpose of the accumulator in the CPU?

• To hold the result of arithmetic and logic operations

• To store the program counter

• To fetch instructions from memory

• To decode instructions

How does a computer program branch?

• By executing instructions in a linear order

• By using a loop

• By jumping to a different set of instructions based on a condition

• By stopping the execution

What does the opcode specify in an instruction?

• The location where the result should be stored

• The data to be used in the operation

• The type of operation to be performed

• The location of the next instruction

What does the fetch-decode-execute cycle demonstrate?

• The way a computer plays video games

• The process of connecting to the internet

• The method of displaying videos on a monitor

• How a computer processes instructions

What is the function of the Control Unit within the CPU?

• It performs arithmetic and logic operations

• It manages data flow within the CPU

• It stores temporary data

• It connects the CPU to peripheral devices

How is data transferred between different components of a computer?

• Through the control unit

• Using the hard drive as an intermediary

• Via buses

• Through wireless transmission