Question 1: Name three main components inside a CPU.

Answer: The three main components are the Arithmetic Logic Unit (ALU), Control Unit (CU), and Registers.

Question 2: Describe the function of the Control Unit in a CPU.

Answer: The Control Unit directs the flow of data between the CPU and other parts of the computer, and controls the execution of instructions.

Question 3: What is the purpose of the Arithmetic Logic Unit (ALU)?

Answer: The ALU performs calculations and makes logical decisions as part of processing instructions.

Question 4: Explain what a register is in the context of a CPU.

Answer: A register is a small, high-speed storage location inside the CPU used to hold data temporarily during processing.

Question 5: Draw a simple diagram of a CPU showing the ALU, Control Unit, and Registers. Label each part.

Answer: A correct sketch would show a rectangular box divided into three sections labeled 'ALU', 'Control Unit', and 'Registers'. Arrows indicate data flow between these components.

Question 6: Complete the following truth table for an AND logic gate: Input A | Input B | Output ---------|---------|--------

Answer: A | B | Output 0 | 0 | 0 0 | 1 | 0 1 | 0 | 0 1 | 1 | 1

Question 7: Draw a logic circuit for an OR gate using basic logic gates. Label each gate.

Answer: A correct sketch would show two inputs feeding into an OR gate; the output is the result of the OR operation. The diagram should include the shape of an OR gate with labeled inputs and output.

Question 8: Explain why the CPU needs both the ALU and the Control Unit working together.

Answer: The ALU performs calculations and logical operations, while the Control Unit manages and directs the data flow and instruction execution. Together, they process data efficiently.

Question 9: Sketch a flowchart showing the steps a CPU takes to process a simple instruction, starting from fetching to executing.

Answer: A flowchart should include steps: Fetch instruction from memory, Decode instruction, Execute instruction, and Store result. Arrows should connect each step sequentially.

Question 10: Describe how registers help improve the speed of a CPU.

Answer: Registers are very fast storage locations inside the CPU that temporarily hold data and instructions, reducing the time needed to access data from main memory.