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Why adder is used?
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An adder is used in digital circuits to perform addition operations. It takes two binary numbers as inputs and produces their sum as an output. Adders are essential in many electronic devices and systems, such as calculators, processors, and computers.

There are different types of adders, including:

  1. Half Adder: It adds two single-bit binary numbers and gives two outputs — the sum and a carry bit. It's simple but can only add numbers without considering previous carry inputs.

  1. Full Adder: It adds three bits (two input bits and a carry bit from a previous addition) and produces a sum and a carry bit. Full adders are used when adding multi-bit binary numbers because they can handle carry bits from previous additions.

Adders are crucial in building more complex arithmetic circuits like arithmetic logic units (ALUs), where addition, subtraction, multiplication, and division are required. Without adders, performing even simple tasks like adding numbers would be impossible in digital systems.
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Why is half adder called so?
Answer : A half adder is called so because it can **add** two single-bit binary numbers, but it **does not handle carry input** from a previous addition. It only adds the two bits and gives the ... half" part refers to its limited functionality compared to a full adder, which can handle carry inputs as well....

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How many inputs does a full adder have?
Answer : A full adder has **three inputs**: 1. **A** - The first input bit. 2. **B** - The second input bit. 3. **Carry-in (Cin)** - The carry from the previous addition. These inputs are used to perform ... **Sum (S)** - The result of the addition. - **Carry-out (Cout)** - The carry to the next addition....

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What is a 4-bit full adder?
Answer : A **4-bit full adder** is a digital circuit used to add two 4-bit binary numbers along with a carry-in bit, and produce a sum and a carry-out bit. Here's how it works in simple ... full adder is a circuit used to add 4-bit binary numbers together while managing the carry between each bit addition....

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What is simple adder?
Answer : A **simple adder** is a basic digital circuit used to add two binary numbers. In its simplest form, it adds two bits (binary digits) at a time. There are two common types ... next. These simple adders are the building blocks for more complex arithmetic circuits in computers and digital systems....

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What is CMOS full adder?
Answer : A **CMOS full adder** is a digital circuit used to perform the addition of two binary numbers, including a carry-in value from a previous addition. It is built using **CMOS ( ... for binary addition in digital circuits, leveraging CMOS technology to achieve low power and high-speed performance....

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What is full wave adder?
Answer : A **full-wave adder** is a type of binary adder that can add two binary numbers and generate a sum and a carry output. It's typically used in digital circuits, particularly in ... building more complex digital systems, such as multi-bit adders used in computers to perform arithmetic operations....

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What is the half adder?
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Explain full adder with its logic diagram & truth table.

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