Hi guys,
I found the schematic diagram for BCD adder.
I wonder how can I do BCD subtraction?
I tried to get the 2's complement of the neg num and add onto the first value but the ans doens't seem correct.
Or I need to convert every bits to binary and do subtraction?
Thank in advance
I found the schematic diagram for BCD adder.
I wonder how can I do BCD subtraction?
I tried to get the 2's complement of the neg num and add onto the first value but the ans doens't seem correct.
Or I need to convert every bits to binary and do subtraction?
Thank in advance