Engine 2014: Electricity

1. A These devices remove 60 Hz, voltage spike, and RF signal noises letting only sensed variable signal data to pass through.
2. B These are high speed solid-state switching devices able to scan many transducers in a short period of time.
3. C These devices remove digital data signal noise letting only analog signal data to pass through.
4. D These devices remove analog data signal noise letting only digital signal data to pass through.

Tip: press A-D to answer