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# What is excess-3 to BCD?

## What is excess-3 to BCD?

The excess-3 code (or XS3) is a non-weighted code used to express code used to express decimal numbers. It is a self-complementary binary coded decimal (BCD) code and numerical system which has biased representation….Representation of Excess-3 Code.

Decimal Digit BCD Code Excess-3 Code
9 1001 1100

Which IC is used as BCD code converter?

The 74158 IC is used to convert 6 binary bits into a BCD code (again the LSB is feed around the chip).

### Which IC is used for excess-3 Adder?

Excess-3 binary code is an unweighted self-complementary BCD code. Self-Complementary property means that the 1’s complement of an excess-3 number is the excess-3 code of the 9’s complement of the corresponding decimal number.

What must be done to change the circuit to an excess-3 to BCD code converter?

To make it a BCD to excess-3 converter, feed the 2’s complement of 3 as the second operand.

## What is Excess-3 code why it is called Excess-3 code?

Explanation: The Excess-3 decimal code is a self-complementing code because the binary sum of a code and its 9’s complement is equal to 9 and complement can be generated by inverting each bit pattern. So, option (C) is correct.

What is the BCD code for 1101 Excess-3 code?

Representation

Decimal Excess-3 BCD 8-4-2-1
9 1100 1001