Further, the output of D flip-flop is used as a carry input for the next pair of significant bits.įollowing is the procedure of addition using serial binary adder: The carry output from the full adder is applied on the D flip-flop. The circuit adds one pair at a time with the help of it. In one shift register augend is stored and in other shift register addend is stored.įull adder is the combinational circuit which takes three inputs and gives two outputs as sum and carry. There are two shift registers used in the serial binary adder. Shift Register is a group of flip flops used to store multiple bits of data.
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