U3 DS18B20 D N G A T A D C C V 1 2 3 R9 10K VCC S1 C1 10uF R6 10K 1 2 3 4 U2 CS CH0 CH1 GND VCC CLK DO DI ADC0832 VCC 8 7 6 5 Y1 12M C2 30pF 3 2 1 A F A 4 5 6 RL3 B F B MQ-2 R7 R8 5.1 1K C4 104 VCC 1 1 D1 LEDR D2 LEDY 2 2 R10 2.2K R11 2.2K S2 S3 S4 S5 2 1 1 1 0 1 9 8 7 DS1 SMG04_1 H 1 A F H 2 H 3 B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 U1 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST (RXD)P3.0 (TXD)P3.1 (INT0)P3.2 (INT1)P3.3 (T0)P3.4 (T1)P3.5 (WR)P3.6 (RD)P3.7 XTAL2 XTAL1 GND VCC P0.0 P0.1 P0.2 P0.3 P0.4 P0.5 P0.6 P0.7 EA/VPP ALE/PROG PSEN P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 J1 1 2 3 4 5 6 7 8 9 103 VCC VCC 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 C3 30pF U1 VCC B1 + P1 POWER 1 2 +5 R5 VCC 2.2K 蜂鸣器 GND Q5 9012 1 3 5 3 Sz 1 3 5 2 4 6 2 4 6 E D P D C G H 4 1 2 3 4 5 6 R1 2.2K Q1 9012 VCC R2 2.2K R3 2.2K R4 2.2K Q3 9012 Q4 9012 Q2 9012