Category: Logic Gates

Digital logic gates can be used for connection to external circuits or devices but care must be taken to ensure that their inputs or outputs

Individual logic gates can be connected together to form a variety of different switching functions and combinational logic circuits. As we have seen throught this Digital

We have also seen that each gate has an opposite or complementary form of itself in the form of the NAND Gate, the NOR Gate

In a previous tutorial we looked at the digital Not Gate commonly called an inverter, and we saw that the NOT gates output state is the complement,

Basically the “Exclusive-NOR” gate is a combination of the Exclusive-OR gate and the NOT gate but has a truth table similar to the standard NOR

In the previous tutorials, we saw that by using the three principal gates, the AND Gate, the OR Gate and the NOT Gate, we can

The inclusive NOR (Not-OR) gate has an output that is normally at logic level “1” and only goes “LOW” to logic level “0” when ANY of its

The NAND (Not – AND) gate has an output that is normally at logic level “1” and only goes “LOW” to logic level “0” when ALL of its inputs are at

Digital logic gates can have more than one input, for example, inputs A, B, C, D etc., but generally only have one digital output, (Q).

The output, Q of a “Logic OR Gate” only returns “LOW” again when ALL of its inputs are at a logic level “0”. In other words for

The output state of a digital logic AND gate only returns “LOW” again when ANY of its inputs are at a logic level “0”. In other words