Communication between a computer and a keyboard involves ____ transmission.

Concept

Data-communication links are classified by the direction data can flow between two devices:

• Simplex: data flows in exactly one direction only — one device always sends, the other always receives.

• Half-duplex: data can flow in both directions, but only one direction at a time.

• Full-duplex: data can flow in both directions at the same time.

Application

In the standard exam/textbook model of keyboard-computer communication, the keyboard is treated purely as an input device on this link: every keystroke travels from the keyboard to the computer, with no return data path used on that same channel for the computer to send instructions or data back to the keyboard.

Cross-check

Because data moves in exactly one direction with no reverse flow at all, the link cannot be half-duplex (which needs alternating two-way flow) or full-duplex (which needs simultaneous two-way flow) — only the one-directional definition fits.

Result

The keyboard-to-computer link is Simplex.