* /home/fossee/downloads/esim-master/examples/half_adder/half_adder.cir .include half_adder.sub x1 net-_u1-pad3_ net-_u1-pad4_ net-_u2-pad1_ net-_u2-pad2_ half_adder * u1 a b net-_u1-pad3_ net-_u1-pad4_ adc_bridge_2 * u2 net-_u2-pad1_ net-_u2-pad2_ sum cout dac_bridge_2 v1 a gnd dc 5 v2 b gnd dc 0 r1 sum gnd 1k r2 cout gnd 1k a1 [a b ] [net-_u1-pad3_ net-_u1-pad4_ ] u1 a2 [net-_u2-pad1_ net-_u2-pad2_ ] [sum cout ] u2 * Schematic Name: adc_bridge_2, NgSpice Name: adc_bridge .model u1 adc_bridge(fall_delay=1.0e-9 in_high=2.0 rise_delay=1.0e-9 in_low=1.0 ) * Schematic Name: dac_bridge_2, NgSpice Name: dac_bridge .model u2 dac_bridge(out_undef=0.5 out_low=0.0 out_high=5.0 t_rise=1.0e-9 t_fall=1.0e-9 input_load=1.0e-12 ) .tran 10e-03 100e-03 0e-03 * Control Statements .control run print allv > plot_data_v.txt print alli > plot_data_i.txt .endc .end