Digital Logic Levels (hight, low, 0, 1)

Digital Logic Levels (hight, low, 0, 1)

Digital Logic Levels (hight, low, 0, 1)

In digital circuits is common to say that we have a “high or a “low” logic level at the input or output of a circuit. If we have a “high” level we say it is a “1” and if we have a “low” level we say that it is a “0”.

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The logic NOT Gate

The logic NOT Gate

The logic NOT Gate The logic NOT gate or Inverter Gate is a logic gate that has only one input and one output. The output logic level is the opposite of the input logic level. The symbol and the truth table of the NOT gate are shown bellow. This gate is represented by the following Boolean function: X = A’. Look at the […]

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Logic OR gate

Logic OR gate

Logic OR gate The logic Or gate is one of the simplest digital logic gates. The output of this gate is high, when one or all of its inputs are high. The OR gate is represented by the following Boolean function: X =A+B or X=B+A. (for a 2 input OR gate) Two Input logic OR gate The following picture shows […]

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