SEQUENTIAL CIRCUIT #3 – RACE CONDITION CHECK

RECAP

In Lesson 1, we considered the circuit below and the race condition that occurred when A was switched from 0 to 1.

The change in value of A should not impact Q. However, because of the race condition’s effect, Q goes from 0, to 1 for a very short period and back to 0. Note that this effect is not visible to eye because it is so brief.

TASK

You will create the circuit above and connect the output of it to the SET input of an SR latch. You will then set the latch to detect the short blip on the output line of the circuit above by first RESETTING it and then leaving the RESET input at 0.

At this point, you can switch the value of A. If the output from the circuit above even briefly goes to 1, the SR latch will be set and will remember that it was on.

PROJECT EXPECTATIONS

Connect the circuit above with the SR latch. Get everything setup and show Mr. Campeau how the SR latch can detect the race condition’s error.