1- Dress the corresponding truth table
2- To realize a BCD adder, we need to:
Step 1: First add the two binary numbers A and B
Step2: If the sum is less or equal than 9 , then the value of BCD sum and binary sum will be the same otherwise we will add 6 (0110 in binary). If a carry results from this addition, add it to the next higher-order BCD digit.
Thus to implement BCD Adder Circuit we require :
4-bit binary adder for initial addition
Logic circuit to detect sum greater than 9 and
One more 4-bit adder to add 01102 in the sum if sum is greater than 9 or carry is 1 .
a) Dress the truth table for the BCD sum (from decimal numbers 0 to 15)
b) Give the conditions from the truth table where we need to add 6 to the binary sum? Give a logic equation
c) Design a BCD adder using two 4 bits' adder and gate AND and OR
sum 4-bit adder Cout
Cin
1- Dress the corresponding truth table 2-To realize a BCD adder,we need to: Stepl:First add the two binary numbers A and B Step2: If the sum is less or equal than 9, then the value of BCD sum and binary sum will be the same otherwise we will add 6(0110 in binary). If a carry results from this addition, add it to the next higher-order BCD digit. Thus to implement BCD Adder Circuit we require : 4-bit binary adder for initial addition Logic circuit to detect sum greater than 9 and One more 4-bit adder to add 01102 in the sum if sum is greater than 9 or carry is 1.
a Dress the truth table for the BCD sum (from decimal numbers 0 to 15 b Give the conditions from the truth table where we need to add 6 to the binary sum? Give a logic equation c Design a BCD adder using two 4 bits'adder and gate AND and OR