Arithmetic operation circuit

Basic adder

Half-adder (HA)

Half plus: consider only two-bit binary numbers together, without regard to low carry

c is a carry

 

 

 

 

 

 

 Full adder

Taking into account the low order bits

Ci is to carry next

Ci-1 is the former carry up

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Origin www.cnblogs.com/yinghao_zhu/p/12079297.html