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Experiment #1
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Experiment #1 Title: Logic Gates Objective: To analyze and become familiar with the operation of TTL Logic Gates. Equipment: Digital Trainer AND Gate (7408) NAND Gate (7400) OR Gate (7432) NOR Gate (7402) Procedure: 1) For each gate predict the output for all combinations of inputs. Write the truth table and describe the operation for the circuit. 2) Build each of the logic circuits to determine if it does operate as expected. Record the results. 3) Have it checked by the Instructor of Lab Tech. Diagrams AND Gate (7402) NAND Gate (7400) OR Gate (7432) NOR Gate (7402) Truth Tables AND Gate (7408) A B OUTPUT 0 0 0 0 1 0 1 0 0 1 0 1 NAND Gate (7400) A B OUTPUT 0 0 1 0 1 1 1 0 1 1 1 0 OR Gate (7432) A B OUTPUT 0 0 0 0 1 1 1 0 1 1 1 1 NOR Gate (7402) A B OUTPUT 0 0 1 0 1 0 1 0 0 1 1 0 Discussion In the experiment for the AND Gate, the red lead from the power pack in connected to pin #14 (Vcc). The black lead from the power pack in connected to pin #7, which is the ground. Both HIGH inputs from the Vcc are connected to pin #1 and pin #2. Output pin #3 is connected to the positive side of the LED, while the other side of ...
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