The invention provides a prefix parallel
adder based on a reconfigurable
transistor with a double-gate structure and a construction method of the prefix parallel
adder, and three 8-bit prefix parallel adders suitable for different application scenes are constructed based on the prefix parallel
adder. Through cooperative regulation and control of the top gate and the back gate of the reconfigurable
transistor with the double-gate structure, the reconfigurable logic operation function of'and 'and'or' of a single
transistor is realized. Under the condition that the number of devices is reduced, the
integrated circuit which is universal, low in
power consumption, small in size and light in weight is constructed. The prefix parallel adder established by the invention has remarkable
data processing parallelism and
low delay, reduces the loss of
data transmission, and has the advantages of high speed, low
power consumption, small size and favorable integration in a digital
system. The
delay problem in a digital circuit is solved, a complex digital circuit is constructed by adopting fewer elements, the area of an
integrated circuit is reduced while the
power consumption is reduced, and the circuit has potential application to logical operation and
data processing in a
microcontroller.