A computer can act as one or all three of these components at the same time.

The computer was acting as if it had a mind of its own.

In a world where even computers can act like vampires after dark, it is best to be on your guard.

And their computers can act as hosts for Web pages.

Even computers can only act on the data that they have.

My computer, which already mimics an answering machine, now acts like a full telephone.

This computer had master control over all of the ship's functions and acted as a coordinating central point for the crew on board.

Each computer may act as a server, a client, or both.

The computer acts as a substitute for human friends, perhaps, but the infatuation may also bring about the end of existing relationships.

The computers act as the electronic brain of the flight control system.