Grade 12 Exam > Grade 12 Videos > Physics for Grade 12 > Logic Gates - 1
Logic Gates - 1 Video Lecture | Physics for Grade 12
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FAQs on Logic Gates - 1 Video Lecture - Physics for Grade 12
| 1. What are logic gates used for? |  |
Ans. Logic gates are electronic components used in digital circuits to perform basic logical operations. They process binary inputs and produce binary outputs based on predefined logical rules. These gates are the building blocks of digital systems and are used in various applications, including computers, calculators, and electronic devices.
| 2. How many types of logic gates are there? | |
Ans. There are several types of logic gates, including AND, OR, NOT, XOR, NAND, and NOR gates. Each type of gate has a specific function and performs a different logical operation. These gates can be combined to create complex logical circuits that can perform various tasks.
| 3. What is the truth table of an AND gate? | |
Ans. The truth table of an AND gate shows the output based on its two input values. An AND gate produces a high output (1) only when both of its inputs are high (1), otherwise, it produces a low output (0). The truth table for an AND gate is as follows:
| Input A | Input B | Output |
|---------|---------|--------|
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |
| 4. How does a NOT gate work? | |
Ans. A NOT gate, also known as an inverter, has only one input and one output. It simply negates or reverses the input signal. If the input to the NOT gate is high (1), it produces a low output (0), and if the input is low (0), it produces a high output (1). In other words, it switches the logical state of the input.
| 5. What is the difference between NAND and NOR gates? | |
Ans. The main difference between NAND and NOR gates lies in their logical operations and output behavior. A NAND gate produces a low output (0) only when both of its inputs are high (1), otherwise, it produces a high output (1). On the other hand, a NOR gate produces a high output (1) only when both of its inputs are low (0), otherwise, it produces a low output (0). Both NAND and NOR gates can be used to implement any logical function, making them versatile components in digital circuit design.
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Dec 26, 2024 Last updated |
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