Logic gates are fundamental components of digital electronic circuits that perform basic logical operations. There are several types of logic gates, including AND, OR, NOT, NAND, NOR, and XOR.
AND gates perform a logical AND operation, which results in a output of 1 only if both inputs are 1. OR gates perform a logical OR operation, which results in a output of 1 if either or both inputs are 1. NOT gates perform a logical NOT operation, which inverts the input, resulting in a output of 1 if the input is 0 and a output of 0 if the input is 1.
NAND gates are a combination of AND and NOT gates, resulting in a output of 0 only if both inputs are 1. NOR gates are a combination of OR and NOT gates, resulting in a output of 0 if either or both inputs are 1. XOR gates perform a logical exclusive OR operation, resulting in a output of 1 if only one of the inputs is 1.
Logic gates are essential for the functioning of computers and other digital electronic devices. They allow for the processing of information by performing logical operations on the input data. In conclusion, basic logic gates are a fundamental component of digital electronics and play a crucial role in the functioning of computers and other electronic devices.
Basic Conversion of Logic Gates
At any time, each terminal is one of two binary states, true or false. From the above discussed it is clear that the AND gate performs the Boolean multiplication, the OR gate performs the Boolean addition and the NOT gate performs the Boolean inversion. A truth table is a chart or table that lists all possible input combinations as well as the resulting output logic level. The bulb will only glows when A and B both of the switches are ON. If you look at the logic symbol, it looks like an OR gate, however, there is a small circle near the output terminal which represents the NOT function. Each gate performs a specific logic function behind which there is an equivalent transistor based electronic circuit. NAND gate and NOR gate, this two are universal gates.
In this Logic gates OR, AND, NOT, NAND and NOR study material, we will learn about the basic logic gates. But as we can construct other logic switching functions using just these gates on their own, they are both called a minimal set of gates. In most logic gates, there is a low-state at around zero voltage 0 V , and the state of high is around five Volts positive +5 V. Treat the inputs in the same way as an AND gate and then invert the results. XOR gate Exclusive OR gate This gate only give true output when only one of its input is true. It takes three inputs to give two outputs.
Also, they are one type of switch actually, which takes inputs, do the operation according to its function and give output. Otherwise, the output will be 0. This is a common gate. However, we used the truth table to examine the operation of the basic logic gate. The switches are in series, if both switch is ON connected then and then only the bulb will glow. It's the 21st Century, however! Most of these logic gates come with two inputs and one output.
Any logic gate which can be combined into a set to realise all other logical functions is said to be a universal gate with a complete logic set being a group of gates that can be used to form any other logic function. This gate and six others will be examined right now. So we can have more than one or two inputs, and the combination of the input will be based on 2 n. The output of the OR gate is in the logic 0 state, only when all its inputs are in logic 0 state. Thus the NAND and the NOR gates are commonly referred to as Universal Logic Gates. The logic gates are commonly used in Integrated Circuits IC.
Basic Logic Gates, Truth Tables, and Functions Explained
It is also possible to see the boolean algebra description for the NOT gate. The experiment was able to successfully achieve the following objectives: 1 to know the different basic logic gates, 2 to describe basic logic gates characteristics, and 3 to demonstrate the function of the basic logic gates by answering a design problem. XNOR gate Exclusive NOR However, This gate is just a inversion of XOR gate. It takes only one input and, hence, gives out one output. Thus like the previous 7400 NAND IC we can use a single 7402 TTL chip to produce all the Boolean functions from a single NOT gate to a NAND gate as shown. This interconnection of logic gates to perform a variety of logical operations is called logic design. These signals can be modified by basic logic gates.
Digital ICs can have a range of logic gates. Pull-up resistors are connected Vcc +5V , and pull-down resistors connect to the ground 0 V. In this article, we shall learn the different types of basic logic gates with their Boolean function and truth table. As you can see, the gate symbol has a little circle near the output terminal to represent the NOT function. Therefore, we can simply state that logic gates are the basic building blocks of digital devices and systems. Also, they can control the current according to a particular equation.
Conclusion In this lab I explored the function of the basic logic gates I
NAND and NOR , we will now learn the basic composition of logic gates. Our radios, televisions, and audio equipment are no longer analog devices, we all own computers and smartphones, and our appliances and even our light bulbs are now microcontroller-based. Although it is quite simple, the NOT gate can be very useful. The number 1 denotes the high signal or high voltage, and 0 represents the low signal or low voltage. The NAND and NOR gates are the complements of the previous AND and OR functions respectively and are individually a complete set of logic as they can be used to implement any other Boolean function or gate. What is truth table in logic gates? Implementation of Universal Logic Gates Function Using Only NAND The 7400 or the 74LS00 or 74HC00 quad 2-input NAND TTL chip has four individual NAND gates within a single IC package.
If the input value is 0, the output will be 1. It's amazing to think that this all works by manipulating a lot of zeros, ones. Logic gates that are commonly used include the TTL as well as CMO. The truth table above is for an "Exclusive OR". In other words we can create all the Boolean functions using just one 7400 NAND or one 7402 NOR chip including its various sub-families. In the following sections of the article, I have some example circuits showing DTL implementations, and TTL implementations.
Therefore, an OR gate is a digital logic device whose output is 1, even if one of its inputs is 1. It has one input. The most commonly used chips are TTL Transistor-Transistor Logic chips, which operate at the 5V logic level. There are many logical gates; each of them has distinct functions and symbols. To represent zeroes or ones, our digital devices use two voltage levels. All digital systems like computers are able to perform very complex logic operations, and these operation are performed by the interconnected system of basic logic gates. If XOR gate have two input so, if one input is true and other input is false then its output will be true.
