Digital Troubleshooting

This assessment presents you with a digital circuit. You can view the circuit's schematic or a breadboard version. Both show three gate chips: U1, U2, and U3. The breadboard shows these three chips correctly wired. The schematic gives the pin numbers for each of the chips. At any point you can view the specifications for each of the three chips.

Your first task will be to create a truth table for the no-fault circuit. After you have done this you will be presented with a circuit that may or may not have a faulty gate. Your task will be to verify whether the circuit works properly, or if it doesn't, to identify the fault. You will analyze this circuit three times, each time the circuit condition will be different. Remember: the breadboard is wired correctly.

Your score on this activity will be based on correctly diagnosing the circuit with credit for doing the job efficiently, so try to make as few measurements as possible, but be confident that you're right.

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