Understanding Data Fetch and Execution

What is the data fetch cycle in a CPU?

• The data fetch cycle in a CPU is the process of retrieving data from memory for processing.

• The data fetch cycle is the time taken for the CPU to cool down after processing.

• The data fetch cycle refers to the process of sending data to output devices.

• The data fetch cycle is when the CPU executes instructions directly from the hard drive.

Explain the role of registers in the CPU.

• Registers primarily handle input and output operations.

• Registers are used for long-term data storage in the CPU.

• Registers are responsible for managing the CPU's power consumption.

• Registers in the CPU serve as high-speed storage for data and instructions, facilitating quick access and processing.

What are the different types of memory addressing modes?

• Sequential

• Immediate, Direct, Indirect, Indexed, Register

• Random

• Static

Describe the architecture of a system bus.

• A system bus is made up of a single data line for all communications.

• A system bus includes only the data bus and ignores the address bus.

• A system bus only connects the CPU to the hard drive.

• A system bus consists of a data bus, address bus, and control bus, facilitating communication between CPU, memory, and peripherals.

What is the instruction execution cycle?

• The instruction execution cycle is the method of cooling the CPU.

• The instruction execution cycle is the process of storing data in memory.

• The instruction execution cycle is the process of fetching, decoding, executing, and writing back instructions in a CPU.

• The instruction execution cycle refers to the speed of the CPU.

How does cache memory improve system performance?

• Cache memory increases the physical size of the main memory.

• Cache memory improves system performance by providing faster access to frequently used data and instructions.

• Cache memory stores all data permanently for future use.

• Cache memory slows down data retrieval processes.

What happens during the fetch phase of the data fetch cycle?

• Data is deleted from the source.

• Data is displayed to the user interface.

• Data is processed and stored in a database.

• Data is retrieved from a source based on a request.

Identify the types of registers found in a CPU.

• General-purpose registers, Special-purpose registers, Accumulator registers, Data registers, Address registers, Status registers

• Input/output registers

• Cache registers

• Control registers

What is the significance of the program counter register?

• The program counter register is significant because it keeps track of the address of the next instruction to be executed.

• It stores the results of the last executed instruction.

• It controls the input and output operations of the CPU.

• It manages the memory allocation for the program.

Explain how direct addressing mode works.

• The operand is fetched from a memory location determined by the previous instruction.

• The operand's address is calculated using a formula in the instruction.

• In direct addressing mode, the operand's address is specified directly in the instruction.

• The instruction specifies a register that contains the operand's address.