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== Activities ==
* Using the continuity setting on your multimeter, determine which is your Normally Open (N.O.) and which is your Normally Closed (N.C.) pushbutton switch. Building a simple switch and light bulb circuit, test out how each one behaves:
[[Image:SPST_circuit.png | 300px]]
* Using the ridiculous knife switch available in class, build a simple "selector switch" that turns on one of two bulbs:
* Build an OR gate and verify its behavior:
[[Image:OR_circuit.png | 300px]]
* Build an Familiarize yourself with the 5V relay. ** Which pins go to the coil?** Which pins are the contacts that get switched?** Is the relay Normally Open(NO) or Normally Closed (NC)?* Using the relay, build a simple S-R latch:
[[Image:One_bit_memory.png | 300px]]
* Turn Now, turn the latch into a pixel:
[[Image:One_pixel.png | 300px]]
* CONGRATULATIONS: You have built a very simple bit of digital memory and digital display!