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Author: Admin | 2025-04-28
0s or 1s which is called bit. 1 represents the high voltage and 0 represent ground or 0 volt electrically. Frequency of a digital signal is inversely proportional to time taken to complete one cycle of that signal. Now, let’s get to the main topic which is logic gates. There are three basic logic gates which are AND, OR, and NOT. Many logic gates can be formed through these three universal logic gates. Important extracted gates are NAND, NOR, Exclusive-OR (XOR), Exclusive-NOR (XNOR), etc. XOR and XNOR are called universal logic gates because using these gates we can implement any boolean expression and build that circuit. AND gate Symbol of AND gate Truth table of AND gate OR Gate Symbol of OR gate Truth table of OR gate NOT Gate Symbol of NOT gate Truth table of NOT gate NAND Gate NAND gate symbol Truth table of NAND gate NOR gate Symbol of NOR gate Truth table of NOR gate XOR gate Symbol of XOR gate Truth table of XOR gate XNOR gate Symbol Implementation of XNOR gate using other logic gates Truth table XNOR gate AND gate It has two or more input terminal and one output terminal. It performs AND operation which means input 1 and input 2 both should be true or high for high output. Let it understand through figures and truth table. Symbol of AND gate Figure 3. AND Gate symbol Truth table of AND gate Figure 4. AND Gate truth table Boolean expression for
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