Data transfer inside a computer between CPU, memory, and I/O devices is primarily accomplished by ________.

Data transfer inside a computer between CPU, memory, and I/O devices is primarily accomplished by ________.

• A. Buses
• B. Pipes
• C. Rails
• D. Channels

Answer: (A)

Data transfer inside a computer among the CPU, memory, and I/O devices happens over buses. A bus is a set of wires and a protocol that carry data, addresses, and control signals between components. The system bus provides the pathways for the CPU to fetch instructions and data by putting the memory address on the address lines, issuing read or write commands on the control lines, and moving the actual information on the data lines. Memory responds by placing data on the data bus, which the CPU can then use, while I/O devices also communicate through these shared channels. Terms like pipes, rails, or channels aren’t the standard way to describe this internal architecture, so they don’t capture how these components coordinate data movement via shared buses.

Data transfer inside a computer among the CPU, memory, and I/O devices happens over buses. A bus is a set of wires and a protocol that carry data, addresses, and control signals between components. The system bus provides the pathways for the CPU to fetch instructions and data by putting the memory address on the address lines, issuing read or write commands on the control lines, and moving the actual information on the data lines. Memory responds by placing data on the data bus, which the CPU can then use, while I/O devices also communicate through these shared channels. Terms like pipes, rails, or channels aren’t the standard way to describe this internal architecture, so they don’t capture how these components coordinate data movement via shared buses.