Mumbai University > COMPS > Sem 3 > Digital Logic Design and Analysis

Marks: 8 M

Year: Dec 2014

4-bit BCD adder using IC- 7483

• The 4-bit binary adder IC (7483) can be used to perform addition of BCD numbers.
• In this, if 4- bit sum output is not a valid BCD digit, or if carry C3 is generated, then decimal 6 (0 1 1 0) is to be added to the sum to get the correct result.
• Following fig (0) shows 4-bit BCD Adder.
• BCD adder can be cascaded to add numbers several digit 1009 by connecting the carry out of a stage to the carry in to the next stage.

4- Bit BCD Adder Implementation