Computer Processing Unit Quiz

What are the three main functions of a computer?

• Save, close, open

• Play, pause, stop

• Copy, paste, delete

• Input, process, output

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

• Speakers and microphone

• Keyboard and mouse

• Memory and processor

• Monitor and printer

What is the first stage in the fetch to code execute cycle?

• Increment

• Fetch

• Execute

• Decode

What is the function of the program counter in a computer?

• Stores the program

• Holds the address of the next instruction to be executed

• Processes data

• Delivers output

What is the purpose of the memory data register during the fetch stage?

• Copies the current instruction

• Sends the address to main memory

• Holds the address of the next instruction to be executed

• Stores the program

What does the op code of an instruction represent?

• The result of the operation

• The address of the data

• The data to be processed

• The operation to be performed

What does the branch always code in the decode unit do?

• Increments the program counter

• Copies the data to the accumulator

• Replaces the value in the program counter with the operand

• Sends a read signal to main memory

What is the purpose of the control unit in a computer?

• Processes data

• Sends signals to coordinate the fetch to code execute cycle

• Delivers output

• Stores the program

What is the result of the calculation in the first fetch to code execute cycle?

• 3

• 0

• 1

• 4

What is the high-level language equivalent of the simple program described in the video?

• sum = num1 + num2; print(sum);

• add(num1, num2);

• if (num1 > num2) {print(num1 + num2);}

• output = input * 2;