Computer Science for IGCSE & O level - Data Transmission (Section 5 - No. 33)

What is the key difference between serial and parallel data transmission?

Serial transmits data one bit at a time, while parallel transmits several bits simultaneously.

Serial is used for long distances, while parallel is for short distances.

Serial is always simplex, while parallel is always full-duplex.

There is no real difference between these methods

Serial transmits bits one after another on a single channel, while parallel transmits multiple bits at once.