Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  The gates required to build a half adder are:... Start Learning for Free
The gates required to build a half adder are:
  • a)
    EX-OR gate and NOR gate
  • b)
    Four NAND gate
  • c)
    EX-OR gate and OR gate
  • d)
    EX-OR gate and AND gate
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The gates required to build a half adder are:a)EX-OR gate and NOR gate...
The gates required to build a half adder are EX-OR gate and AND gate. Figure below shows the logic diagram of half adder.
View all questions of this test
Most Upvoted Answer
The gates required to build a half adder are:a)EX-OR gate and NOR gate...
Half Adder Gates

A half adder is a digital circuit that performs addition of two one-bit numbers. It has two inputs, A and B, and two outputs, Sum (S) and Carry (C). The Sum output represents the result of adding A and B, while the Carry output represents the carry that occurs when A and B are added.

To build a half adder, we need two basic logic gates: the EX-OR gate and the AND gate. The EX-OR gate produces a high output (1) when its two inputs are different, and a low output (0) when they are the same. The AND gate produces a high output (1) only when both of its inputs are high (1), and a low output (0) otherwise.

EX-OR Gate

The EX-OR gate (also known as the exclusive OR gate) is a two-input gate that produces a high output (1) when its two inputs are different, and a low output (0) when they are the same. The truth table for an EX-OR gate is shown below:

| Input A | Input B | Output |
|---------|---------|--------|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |

AND Gate

The AND gate is a two-input gate that produces a high output (1) only when both of its inputs are high (1), and a low output (0) otherwise. The truth table for an AND gate is shown below:

| Input A | Input B | Output |
|---------|---------|--------|
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |

Half Adder Circuit

The circuit diagram for a half adder using an EX-OR gate and an AND gate is shown below:

```
+-----+ +-----+
A----| |-----| |
| EX- | | AND |----S
B----| OR |-----| |
+-----+ +-----+
|
+----C
```

The EX-OR gate is used to calculate the Sum output, while the AND gate is used to calculate the Carry output. The circuit works as follows:

1. When A and B are both low (0), the EX-OR gate produces a low output (0), and the AND gate also produces a low output (0). Therefore, the Sum output is low (0), and the Carry output is also low (0).

2. When A is high (1) and B is low (0), the EX-OR gate produces a high output (1), and the AND gate produces a low output (0). Therefore, the Sum output is high (1), and the Carry output is low (0).

3. When A is low (0) and B is high (1), the EX-OR gate produces a high output (1), and the AND gate produces a low
Explore Courses for Electrical Engineering (EE) exam
The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer?
Question Description
The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer?.
Solutions for The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The gates required to build a half adder are:a)EX-OR gate and NOR gateb)Four NAND gatec)EX-OR gate and OR gated)EX-OR gate and AND gateCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam
Signup to solve all Doubts
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev