【正文】
12MHz10uF1001kVCC0.033uF0.033uFVCCVCCVCCP1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78RST9XTAL119ALE30PSEN29P2.0(A8)21P2.1(A9)22P2.2(A10)23P2.3(A11)24P2.4(A12)25P2.5(A13)26P2.6(A14)27P2.7(A15)28Vcc40P0.0(AD0)39Gnd20P0.1(AD1)38P0.2(AD2)37P0.3(AD3)36P0.4(AD4)35P0.5(AD5)34P0.6(AD6)33P0.7(AD7)32EA31RXD/P3.010TXD/P3.111INTR0/P3.212INTR1/P3.313TIMER 0/P3.414TIMER 1/P3.515WR/P3.616RD/P3.717XTAL218U?4 HEADERIN 11IN 22IN 33IN 44IN 55IN 66IN 77IN 88OUT 811OUT 712OUT 613OUT 514OUT 415OUT 316OUT 217OUT 118Vcc10Gnd9U?ULN2803VCCD?DIODED?DIODEVCCS E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164S E R IN A1S E R IN B2Q03Q14Q25Q36CL K IN8CL R9Q410Q511Q612Q713V cc14G n d7D?74LS164D0D1D2D3D4D5D6D7D8D9D10D11D12D13D14D15B0B1B2