Multiple choice

A latch is commonly used to

  1. interface input devices

  2. interface output devices

  3. interface memory

  4. interface DMA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Output port latches hold data steady for external devices while the CPU continues other tasks. This prevents data from changing during the peripheral device's read operation. Input ports may also use latches, but output latching is more critical for timing.

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