Who is the fastest? This is the other name of this interesting circuit that makes it possible to detect who first pressed a switch, when a signal is given. The circuit can be used in competitions and uses a CMOS 4011 integrated circuit as a base. The resistor that is worthless is 22 k and the power supply can be made with voltages from 5 to 12 V. The circuit is from Newton C. Braga, published in the United States.
| Clique na imagem para ampliar |
