A useful binary addition circuit is made from many individual _____?

A useful binary addition circuit is made from many individual _____?

• A. simple adders
• B. half adders
• C. full adders
• D. multiplexers

Answer: (A)

Binary addition across multiple bits is created by placing one basic addition unit at each bit position and chaining them so the carry from one stage feeds into the next. Each simple adder handles the addition of two bits (and can produce a carry to the next stage), and by connecting a string of these units, you build an N-bit binary adder that adds two N-bit numbers correctly. Multiplexers don’t perform addition, and half adders alone can’t handle carries flowing between stages. The idea here is that you can reuse the same small adder block many times to form the complete circuit, which is why the statement points to many individual simple adders.

Binary addition across multiple bits is created by placing one basic addition unit at each bit position and chaining them so the carry from one stage feeds into the next. Each simple adder handles the addition of two bits (and can produce a carry to the next stage), and by connecting a string of these units, you build an N-bit binary adder that adds two N-bit numbers correctly. Multiplexers don’t perform addition, and half adders alone can’t handle carries flowing between stages. The idea here is that you can reuse the same small adder block many times to form the complete circuit, which is why the statement points to many individual simple adders.