SCHEMATIC TTTld0d:n:dbnbdbb::"0"T" | r    \H\   Rrr\HHHr\H0@:@::T:::&\TRT\6R6\R\R\R\R\R\R       T TT6 66       0ll00ll00ll00ll00J:J06:666,6^TJJ""hTTT^J0TNTv|v,TTTTJTJTT  : b bd :d   r H Hr :T   6   T T T TT J0VCC10:dVCC10HrVCC10&Light S1ensitivity0VCC10VCC1x0mUse 3v/14.5v Battery0VCC[Sys1Meter] ONTOP0sm.1+RPQA01؁1~ -|B01F31 yAػ;0V1.01b1؁~U-~NJ04 AB96092131'UF3 0HSETI 11 CPU PCB PCBr0TVCC772 1456 C:\WINDOpSKT1DE2TO.rAICSOCKETBr3BC<DIP20.24TEq444qq444qq444qq444qpC30ODE2TO.&AGNDf703ABr BC<RB.1/.24TE`1`00` p pC30ODE2TO.A22uf703ABrBC<RB.1/.24TE`1`2!!'!!@@ pIC211AM#1.@AGND2803ABr BC<DIP180.4TE`1`00` p pR13ODE2TO.XA10kE703ABrBggC<AXIAL0.4TE`1`2pR12ODE2TO.0A10kE703ABrB??C<AXIAL0.4TE`1`2pSPKR2E2TO.fA100uf 16vrBufC<TP.1/.24TE`1cAAcpSPKR1E2TO.fA100uf 16vrBufC<TP.1/.24TE`1cAAcpC21ODE2TO.*A 100uf 16vrB*C<RB.1/.24TE`1`2!!'!!@@ pR11ODE2TO.&AGNDE703ABr B22C<AXIAL0.4TE`1`00` p pR11ODE2TO.A100E703ABrBC<AXIAL0.4TE`1`2pR10ODE2TO.A1K32703ABrBC<AXIAL0.4TE`1`2pTR3ODE2TO.ABC32703ABr)BC<TO-92A.4TE`1`3`2r`@ @? ? ~@x@`@@@ @@  @  @`rpLANODE2TO.fARXD4703ABrBufC<TPIAL0.4TE`1cAAcpLANODE1TO.f|ARXD4703ABrBuf|C<TPIAL0.4TE`1cAAcpT72-PHOTO.ARXD4703ABrBcC<TPIAL0.4TE`1cAAcpT62-PHOTO.ATXD4703ABrBcC<TPIAL0.4TE`1cAAcpR92-PHOTO.0DAGND4703ABr B<<C<AXIAL0.4TE`1`00` p pR92-PHOTO.DAGND4703ABr B<<C<AXIAL0.4TE`1`00` p pR92-PHOTO.A10k4703ABrBC<AXIAL0.4TE`1`2pTR2-PHOTO.ABC54703ABr)BIIC<TO-92A.4TE`2`3`1r`@  @  @@@ @@@@@    ` @`=rpVR1-PHOTO.A100k203ABrBC<VR492A.4TE`1`3`2>pTR1-PHOTO.AMEL1203ABr)BC<TO-92A.4TE`1`3? @  @ ߀@@@          @@@@ @  ?pT5211AM#1.D6AP342803ABrBNEgEC<TPIAL0.4TE`1cAAcpL8211AM#1.fxA27E2803ABrBufxC<TPIAL0.4TE`1cAAcpL7211AM#1.fA27E2803ABrBufC<TPIAL0.4TE`1cAAcpL6211AM#1.fA27E2803ABrBufC<TPIAL0.4TE`1cAAcpL5211AM#1.fA27E2803ABrBufC<TPIAL0.4TE`1cAAcpL4211AM#1.fA27E2803ABrBufC<TPIAL0.4TE`1cAAcpL3211AM#1.fA27E2803ABrBufC<TPIAL0.4TE`1cAAcpL2211AM#1.f,A27E2803ABrBu;f,C<TPIAL0.4TE`1cAAcpL1211AM#1.fJA27E2803ABrBuYfJC<TPIAL0.4TE`1cAAcpR8211AM#1.*JA27E2803ABrB*E*OC<AXIAL0.4TE`1`2pR7211AM#1.*,A27E2803ABrB*'*1C<AXIAL0.4TE`1`2pR6211AM#1.*A27E2803ABrB* *C<AXIAL0.4TE`1`2pR5211AM#1.*A27E2803ABrB**C<AXIAL0.4TE`1`2pR4211AM#1.*A27E2803ABrB**C<AXIAL0.4TE`1`2pR3211AM#1.*A27E2803ABrB**C<AXIAL0.4TE`1`2pR2211AM#1.*A27E2803ABrB**C<AXIAL0.4TE`1`2pR1211AM#1.*xA27E2803ABrB*s*}C<AXIAL0.4TE`1`2pIC211AM#1.AULN2803ABrB C<DIP180.4TE P10DIODE+2D13D24D35D46D57D68D7 1D017Q116Q215Q314Q413Q512Q611Q7 18Q0P9GNDpT4D11AM#1.D@AINT1mmHiBrBNOgOC<TP06L0.4TE`1cAAcpT3D11AM#1.D,AP35-mmHiBrBN;g;C<TP06L0.4TE`1cAAcpSW2DPDTE1.AS202020513BC<S2020SMTTEa1a2a3a4a5a6 pIC1 SITE1.hAGND9C2051 BC<DIP20INATE`1`00` p pA1B LAM#1.A(C)1996# 3BvCA<LOGO1INATE@      n x ? {qs  q`3  ` `  `` `` `` ``0``0` `0`q``?`` 9bDDQRH@DQRH @DQJH @GJH@EFH@DFHDDQBH8DNBp PCB LAM#1.vA AB96092313BC< PCLAMINATE P #@$ @GA8.O(p@( P#@\<  S PA @@pIC1 SITE1.A AT89C2051BC<DIP20INATE51X1 40X21RST  2RXD 3TXD 6INT0 7INT1 8P34 93P35 11P37  12P10  13P11  14P12 15P13 16P14 17P156 18P161 19P17P20VCC P10GNDpXTAL1AM#1.|@A 3.57945MhzB6YcC<XTAL2T.4TE`1`2" " " " " " 8" " " " " " pC1AL1AM#1.rA 2.2uf50vMMB^Y"C< RB.06/.15E`1`2!!'!!@@ pSW1T491#1.XJATV-06A1iBr)BbbC<TV-06A.4TE`1`2@  8?`"0AAA"@ pSW1T491#1.lAGND06A1iBr BC<TV-06A.4TE`1`00` p pT1D11AM#1.ABAT+mmHiBrBC<TP06L0.4TE`1cAAcpT2D11AM#1.JABAT-mmHiBrB@JC<TP06L0.4TE`1cAAcpD11T491#1.J@A 5.6v 0.3wrB@" ,C<DIODE0.3TE`A`K@`px|~~|xp`@P||A '1' on port bits P1.0 to P1.7 turns ON corresponding L1 to L8. A '0' on port bit P3.7 drives the speaker active - output a square wave to produce sound. INT0 (P3.2) is driven active (0) when light is detected by TR1.