Which CPU function interfaces the computer with peripheral devices?

Which CPU function interfaces the computer with peripheral devices?

• A. Input/Output
• B. Arithmetic Logic Unit
• C. Control Unit
• D. Memory

Answer: (A)

Connecting the CPU to peripherals is handled by the input/output subsystem. This part provides the pathways, ports, and controllers that move data between the CPU (and memory) and external devices such as keyboards, displays, disks, and network cards. The CPU uses I/O instructions or memory-mapped I/O to request transfers, and interrupts notify the CPU when data is ready. While the Control Unit coordinates operations and the Arithmetic Logic Unit performs calculations, neither is responsible for the actual interface with peripheral devices. Memory is for storing data, not for interfacing with peripherals. So the function that interfaces the computer with peripheral devices is the input/output system.

Connecting the CPU to peripherals is handled by the input/output subsystem. This part provides the pathways, ports, and controllers that move data between the CPU (and memory) and external devices such as keyboards, displays, disks, and network cards. The CPU uses I/O instructions or memory-mapped I/O to request transfers, and interrupts notify the CPU when data is ready. While the Control Unit coordinates operations and the Arithmetic Logic Unit performs calculations, neither is responsible for the actual interface with peripheral devices. Memory is for storing data, not for interfacing with peripherals. So the function that interfaces the computer with peripheral devices is the input/output system.