# Tag - logic.

## Logic NAND Function

The NAND or “Not AND” function is a combination of the two separate logical functions, the AND function and the NOT function connected together in series. The logic NAND function can be expressed by the Boolean expression of, A.B   The Logic NAND Function only produces [...]

## Digital Logic Gates

Introduction to Digital Logic Gates Standard commercially available digital logic gates are available in two basic families or forms, TTL which stands for Transistor-Transistor Logic such as the 7400 series, and CMOS which stands for Complementary Metal-Oxide-Silicon which is the 4000 series of chips. This [...]

## Logic NAND Gate Tutorial

Logic NAND Gate Definition Logic NAND Gate Equivalence The logic or Boolean expression given for a logic NAND gate is that for Logical Addition, which is the opposite to the AND gate, and which it performs on the complements of the inputs. The Boolean expression for [...]

## Logic NOR Gate Tutorial

Logic NOR Gate Definition Logic NOR Gate Equivalent The logic or Boolean expression given for a logic NOR gate is that for Logical Multiplication which it performs on the complements of the inputs. The Boolean expression for a logic NOR gate is denoted by a plus [...]

## Digital Logic Gates Summary

In this section about Digital Logic Gates, we have seen that there are three main basic types of digital logic gate, the AND Gate, the OR Gate and the NOT Gate. We have also seen that each gate has an opposite or complementary form [...]

## Combinational Logic Circuits

Unlike Sequential Logic Circuits whose outputs are dependant on both their present inputs and their previous output state giving them some form of Memory, the outputs of Combinational Logic Circuits are only determined by the logical function of their current input state, logic “0” [...]

## Sequential Logic Circuits

Sequential Logic In other words, the output state of a “sequential logic circuit” is a function of the following three states, the “present input”, the “past input” and/or the “past output”. Sequential Logic circuits remember these conditions and stay fixed in their current state until [...]

## Explain single-electron transistor logic.

Ans. In SET logic devices, charge impurities can lead to logical errors. Or unreliable operation, to alleviate this problem the schemes SET memores have been proposed, and ways of constructing SET logic that are less sensitive to random charge effects have been considered. SET [...]