# What is the function of a half adder?

The half adder is an

**example**of a simple, functional digital circuit built from two logic gates. The half adder adds two one-bit binary numbers (AB). The**output**is the**sum**of the two bits (S) and the carry (C).A.

### What is the use of half and full adder?

An adder is a digital circuit that performs addition of numbers. The half adder adds two binary digits called as augend and addend and produces two outputs as sum and

**carry**; XOR is applied to both inputs to produce sum and AND gate is applied to both inputs to produce**carry**.#### What is the JK flip flop?

**J-K Flip**-**Flop**. The**J-K flip**-**flop**is the most versatile of the basic**flip**-**flops**. It has the input- following character of the clocked D**flip**-**flop**but has two inputs,traditionally labeled J and K. If J and K are different then the output Q takes the value of J at the next clock edge.#### What is full adder and subtractor explain?

In digital circuits, an**adder**–**subtractor**is a circuit that is capable of adding or subtracting numbers (in particular, binary). Below is a circuit that does adding or subtracting depending on a control signal. It is also possible to construct a circuit that performs both addition and subtraction at the same time.#### What is a half adder and full adder?

**Half Adder**and**Full Adder**Circuit. An**adder**is a digital circuit that performs addition of numbers. The**half adder**adds two binary digits called as augend and addend and produces two outputs as sum and carry; XOR is applied to both inputs to produce sum and AND gate is applied to both inputs to produce carry.

B.

### What is the function of a full adder?

A

**full adder**is a logical circuit that performs an addition operation on three one-bit binary numbers. The**full adder**produces a sum of the three inputs and carry value. It can be combined with other**full adders**(see below) or work on its own.#### What is a ripple carry adder?

It is also possible to create a logical circuit using multiple full**adders**to add N-bit binary numbers.Each full**adder**inputs a Cin, which is the Cout of the previous**adder**. This kind of**adder**is a**Ripple Carry Adder**, since each**carry**bit "**ripples**" to the next full**adder**.#### What is meant by carry look ahead adder?

A**carry**-**lookahead adder**(CLA) or fast**adder**is a type of**adder**used in digital logic. A**carry**-**lookahead adder**improves speed by reducing the amount of time required to determine**carry**bits.#### What is the use of parallel adder?

**Parallel adder**is a combinatorial circuit (not clocked, does not have any memory and feedback) adding every bit position of the operands in the same time. Thus it is requiring number of bit-**adders**(full**adders**+ 1 half**adder**) equal to the number of bits to be added.

Updated: 18th November 2019