.INCLUDE model.spi

.INCLUDE fulladder.spi

* net 6 = a
* net 5 = b
* net 4 = ci
* net 3 = co
* net 2 = s
* net 1 = vdd
* net 0 = vss

X1 6 5 4 3 2 1 0 fulladder

*
* 5v entre vdd y vss
*
VCC 1 0 DC 5V

*
* Entradas variables
*
Va  6 0 pwl(0ns 0   4ns 5)
Vb  5 0 pwl(0ns 0   6ns 5)
Vci 4 0 pwl(0ns 0   8ns 5)

*
* Duracion del analisis
*
.TRAN 1ns 25ns

.PLOT TRAN V(6) V(5) V(4) V(3) V(2)

.END