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Electronic Labs_70

Electronic Labs_70 - Exercise Procedure E 4 a)Connect the...

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Unformatted text preview: Exercise Procedure E] 4. a)Connect the circuit shown in Fig. 2-12. [:1 b) Turn on the trainer power. [:1 0) Complete Table 2-7. Table 2-7 The truth table should indicate the operation of an OR gate; that if any input is 1 the out- put is 1. OUTPUT Fig. 2-12 5. a)Connect the circuit shown in Fig. 2-13. El El b) Turn on the trainer power. Cl 0) Complete Table 2-8. Table 2-8 The truth table should indicate the operation of an AND gate; that the output is 1 if and only if all the inputs are 1. AND/OR Logic Gates; NOT Circuit 2-5 Summary In this lesson you have been introduced to the digital logic AND gate, its logic symbol and truth table. You have verified that positive logic is used, with the most positive level (which lights the lamp) being a HI and a logic 1. You demonstrated and verified that all inputs of the AND gate must be 1 to obtain a 1 at the output. For all other input combinations of this gate, the output will be 0. The 1 and 0 states dem- onstrate the binary nature of digital logic. You were then introduced to the digital logic OR gate, its logic symbol and truth table. You verified that if any input of the OR gate is 1 then the output will be 1. Only if all inputs to the OR gate are zero, will the output be 0. You were finally introduced to the INVERTER and demonstrated that the output will be the inverse or complement of the input. You verified that if the input was A and A was 1 then the output was 0 or X. You then combined circuits and verified that by inverting the inputs and outputs of the AND gate you could obtain the OR function. You further verified that inverting the inputs and outputs of an OR gate gave the results of the AND gate. The truth table was an aid to check your results. Quiz 1. An AND gate with a 1 on every input will have an output of: a”; 0. (1,; 1- 6. L0. d. None of the above. 2. An OR gate with a 1 on at least one input, will have an output of: a. 0. b. 1. c. LO. (1. None of the above. 3.. An INVERTER with a 1 at its input, will have an output of: a. 0. b. 1. 0. HI. d. None of the above. ...
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