A parallel device is defined as which of the following?

• A. A device that transmits data serially over a single line.
• B. A device that transmits multiple bits of information simultaneously.
• C. A device that stores information.
• D. A device that amplifies signals.

Answer: (B)

In this context, parallel transfer means sending several bits at once across multiple wires or paths, so a group of bits is placed on the lines and received together on a single clock edge. This approach yields a higher data rate per cycle because multiple bits travel simultaneously, as with an 8-bit data bus that moves eight bits in one go. However, parallel systems require careful timing and matching of line lengths to prevent skew, and they are more complex and costly than serial systems that use a single line and send bits one after another. The other descriptions don’t fit because storing information describes memory, and amplifying signals describes an amplifier, not a data transfer mode.