I've been assigned by my professor to make a binary multiplier using a 4 bit adder That goes up to 5 ( 1x3 , 2x3, 3x3, 4x3, 5x3 )
So I made an Adaption In Circuit maker from a 4x4 multiplier from around this site
But I decided to make one that goes up to 15x3, and I've come to a snag, Some operations work, others do not, I can't figure out what I've done wrong in the circuit I've made
Here Is the schematic:
First of all, your picture is showing 1010 (xA) not 0101 (5). I think you may have your bits backwards. B1 is your least-significant-bit. B4 is most-signficant.