用2's補數做成的加減法電路
//SW[7:4]=A ==>HEX7
//SW[3:0]=B ==>HEX5
//SW[17]=SUB/ADD control //LEDR[17]=ADD/SUB
//ABS=HEX0
//CY_BR_OUT=HEX1
WOKWI ESP32 LED Control , Node-Red MQTT SQLITE const char broker[] = "test.mosquitto.org" ; //const char broker[] = "br...
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