Half-carry adder; Sum = 0, Carry = 1

Full-carry adder; Sum = 1, Carry = 1

Full-carry adder; Sum = 1, Carry = 0

 Half-carry adder; Sum = 1, Carry = 0

requires only one signal line between

sender and receiver.

requires as many signal lines between

sender and receiver as there are data bits.

is much slower than the serial

transmission of data.

is less expensive than the serial method

of data transmission.

F = AC + AD

F = ABD + ABC + CD

F = BC + AB

F = CD + AD

11001    11100    00010

11010    11101    00011

00111    00010    00010

00110    00011    11101

ten

One

that number

Zero

 1110 1101

1111 0011

1110 1001

1111 1001

Information storage is easy.

The

operation can be programmed.

The values may vary over a continuous

range.

The circuits are less affected by noise.

D

A

C

B

152

134

144

142