# Discrete Structure lecture_4

Apr 28th, 2015
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It includes all the details about the Discrete structure with examples.Step by step solution.

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DISCREAT STRUCTURELECTURE # 4APPLICATIONS ONLOGICKHAWAJA TARIQ MAHMOODLecture # 4APPLICATION ON LOGIC1. NOT GATE:A NOT-gate (or inverter) is a circuit with one input and one output signal. If the inputsignal is 1, the output signal is 0. Conversely, if the input signal is 0, then the outputsignal is 1.DIAGRAM:PRNOTTRUTH TABLE:PR10012. AND-GATE:An AND-gate is a circuit with two input signals and one output signal. If both inputsignals are 1, the output signal is 1. Otherwise the output signal is 0.DIAGRAM:PRANDQTRUTH TABLE:PQR110010101000Khawaja Tariq Mahmood.Page 2Lecture # 4APPLICATION ON LOGIC3. OR-GATE:An OR-gate is a circuit with two input signals and one output signal. If both input signalsare 0, then the output signal is 0. Otherwise, the output signal is 1.DIAGRAM:PRORQTRUTH TABLE:PQR110010101110COMBINATIONAL CIRCUIT:A Combinational Circuit is a compound circuit consisting of the basic logic gates such asNOT, AND, OR.PANDQORRKhawaja Tariq Mahmood.NOTPage 3Lecture # 4APPLICATION ON LOGICDETERMINING OUTPUT FOR A GIVEN INPUT:Indicate the output of the circuit below when the input signals are P = 1, Q = 0 and R = 0PQANDNOTORRSSOLUTION:Output S = 1CONSTRUCTING THE INPUT/OUTPUT TABLE FOR A CIRCUIT:Construct the input/output table for the following circuit.PANDNOTQSRKhawaja Tariq Mahmood.ORPage 4Lecture

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