Semiconductor gates are a very important topic in the subject of electronics. These are really important digital devices that mainly deal with the Boolean function. Logic gates perform logical operations on one or more binary inputs, producing a single binary output. In layman’s terms, logic gates are the electronic circuits in a digital system.
Definition
A logic gate is an electronic circuit that is comprised mainly of electrical components such as diodes, transistors, resistors, and so on. This gate performs logical operations based on the inputs given to it and it gives a logical output either as high (1) or low (0). Logic gates work based on Boolean algebra or mathematics. Logic gates are used every day, in the architecture of your telephone cell, laptop, tablet, and memory devices. Let us discuss some types of semiconductor gates:
AND GATE
An AND gate can be defined as a logic multiplication gate; that is, it takes up logical multiplication of binary input. Now the output state of the AND gate would be high (1) if both the inputs are high (1), else the output state will be low (0) if any of the input is low (0). AND gate can accept two or more than two input values at a time. When all of the inputs are logic 1, the output of this gate is logic 1.
OR GATE
This is a digital logic circuit that is widely used. The output state of the OR gate will be high or equal to one when any of the input states is high or equal to one. Otherwise, the output state will equal 0. It can have two or more input lines at a time. When all of the inputs to the OR gate are low or logic 0, the output of it is low or logic 0.
NOT GATE
The very first basic gate on digital electronics that can only have one input and one output is the NOT gate. It’s also called inverter or inverting buffer. It states that when the input signal is low then it will produce high out and vice-versa.
NOR GATE
The NOR gate is one of the universal logic gates that take two or more inputs to output one. The output state of the NOR gate is high (1) if all the inputs are low (0). The NOR gate produces the output as the inverse of just one input of an OR gate. It is a combination of two base logic gates such as OR gate and NOT gate. A NOR gate can have two or more inputs and gives an output. A NOR gate gives a high or logic 1 output only when its all inputs are low or logic 0.
NAND GATE
The NAND Gate is yet another example of an all-encompassing universal logical gate. NAND or rather “Not AND” refers to the merger of two basic logic gates, which is the AND gate and NOT gates connected serially. It takes 2 or more inputs but produces only a single output. The output of NAND Gate will provide result high (1) when either of its input is high (1) or both of its input is low (0). In simple, it is inverted operation of AND gate.
This is the discussion concerning various available types of semiconductor gates like AND OR. These are usually employed in combination to construct complex circuits such as multiplexers, adders, and memory units.
