毕业设计 第 28 页
整体原理图：
VCCVCCR?100U3S?SW-PB8050BEEPR?4.7KC1510kD?LED0D?DIODERELAY-SPSTC1647UFAT89C51DCBALED1LED2LED3LS7C?蜂鸣器22UFY1C1234JDQ5BEEP6TX7RX891011121314151617181920P1.0VCCP1.1P0.0P1.2P0.1P1.3P0.2P1.4P0.3P1.5P0.4P1.6P0.5P1.7P0.6RESETP0.7P3.0(RXD)EA/VPPP3.1(TXD)ALE/PROGP3.2(INT0)PSENP3.3(INT1)P2.7P3.4(T0)P2.6P3.5(T1)P2.5P3.6(WR)P2.4P3.7(RD)P2.3XTAL2P2.2XTAL1P2.1GNDP2.0AT89C51VCC403938373635343332313029282726252423A222A121A0R?1KJ?K?12CON2Q?NPNJDQR?1KVCCD?R?LED绿色D?R?LED黄色D?R?LED红色1KLED31KLED21KLED122UF11.0592MHZgf10ab10gfab10gfab98769876C26LS40.01UFC27TCP40-16TR10.01UFA9A10A8A8+12891011121314R?O4I8O5I5O6I6VCCTC4069U1CX20106CX20106INC1C2GNDR3COUTVCCCD4511DC1234512345CD4511U4A0A1A212345678A0A1A2S3S2S1Y7GND74LS138VCCY0Y1Y2Y3Y4Y5Y6VCC161514131211109VCC330edcedc74LS138Q2Q4PNPVCCPNPR12.4kR32.4kR52.4k12345678VCCTXRXJ?1234CON4LS6C5223+C281UF+C203.3UFC2330PFRXR9R10R11R12R13R14R1510k10k10k10k10k10k10kC2122KA0A1C294.7KC22200KVCCA2ADBC12345
TXA8A8A9A9A10GNDO3I3O2I2O1I1阴阴阴cpdcpdedcpd7654321U1VCC12345678BAA1A2LTBTLEA3A4GNDvccfgabcdeVCC16R315R214330R413330R512330R611330R710330R89330阴阴阴ababfgabcde数码管数码管abgfgfgfC9C109876C11数码管edededTC4069cQ6PNP方案二