The symbol and truth table of a NOT gate with one input is shown below. When the input of the NOT gate is true then the output will be false and vice versa. The output of the NOT gate is the reverse of the input. The NOT gate is a digital logic gate with one input and one output that operates an inverter operation of the input. The symbol and truth table of an OR gate with two inputs is shown below. If all the i/ps of the gate are false, then only the output of the OR gate is false. The output of the OR gate is true only when one or more inputs are true. The OR gate is a digital logic gate with ‘n’ i/ps and one o/p, that performs logical conjunction based on the combinations of its inputs. The symbol and truth table of an AND gate with two inputs is shown below. When one or more inputs of the AND gate’s i/ps are false, then only the output of the AND gate is false. The output of this gate is true only when all the inputs are true. The AND gate is a digital logic gate with ‘n’ i/ps one o/p, which performs logical conjunction based on the combinations of its inputs. The different types of logic gates and symbols with truth tables are discussed below. After that, each logic gate is discussed separately this contains the logic of the gate, truth table, and its typical symbol. Here 1 represents the High signal or high voltage whereas “0” specifies low voltage or low signal. The significance of using binary numbers here is to signify the switching position otherwise voltage position of a digital component. In the same way, binary numbers like 0 and 1 can be utilized to signify decimal numbers wherever the base of the binary numbers is 2. This kind of number system includes the base-10. We all know the decimal numbers which we utilize in everyday calculations like 0 to 9. Binary & Decimalīefore talking about the truth tables of logic gates, it is essential to know the background of binary & decimal numbers. Because of this reason, basic logic gates are used like electronic circuits. The implementation of Logic gates can be done through diodes, transistors, relays, molecules, and optics otherwise different mechanical elements.
In some electronic circuits, few logic gates are used whereas in some other circuits, microprocessors include millions of logic gates. Most of the logic gates use two binary inputs and generates a single output like 1 or 0. These are the basic building blocks in the digital ICs (integrated circuits). The basic logic gates are used to perform fundamental logical functions. If you don’t know about the logic gates and their truth tables and need guidance on them, please go through the following infographic that gives an overview of logic gates with their symbols and truth tables. Every possible combination depends on the number of inputs. When drawing a truth table, the binary values 0 and 1 are used. All the logic gates have two inputs except the NOT gate, which has only one input. The truth table is used to show the logic gate function. The basic logic gates are classified into seven types: AND gate, OR gate, XOR gate, NAND gate, NOR gate, XNOR gate, and NOT gate.
Basic Logic Gates Operation What are the 7 Basic Logic Gates? These logic gates with their logic gate symbols and truth tables are explained below. The basic logic gates are categorized into seven: AND, OR, XOR, NAND, NOR, XNOR, and NOT. Logic gates are used in microprocessors, microcontrollers, embedded system applications, and in electronic and electrical project circuits. But, in practice, basic logic gates are built using CMOS technology, FETS, and MOSFET(Metal Oxide Semiconductor FET)s. These gates are implemented using electronic switches like transistors, diodes. The relationship between the i/p and the o/p is based on a certain logic. A logic gate is a basic building block of a digital circuit that has two inputs and one output.