งานที่3

#include "LedControl.h" LedControl lc=LedControl(5,7,6,1); // Pin 5->DIN, 7->CLK, 6->CS(LOAD), 1 = No.of devices void show4digit(int num) { int seg1,seg2,seg3,seg4; seg1 = ((num%1000)%100)%10; seg2 = ((num%1000)%100)/10; seg3 = (num%1000)/100; seg4 = num/1000; lc.setDigit(0,0,seg1,false); if (num>=10) lc.setDigit(0,1,seg2,false); if (num>=100) lc.setDigit(0,2,seg3,false); if (num>=1000) lc.setDigit(0,3,seg4,false); delay(300); } void setup() { Serial.begin(9600); lc.shutdown(0,false); lc.setIntensity(0,5); lc.clearDisplay(0); } void loop() { int num; num = analogRead(A0); Serial.print("analogRead=");Serial.println(num); lc.clearDisplay(0); show4digit(num); }