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D7 D6 D5 D4 D3 D2 D1 D0 D0 D2 D3 D4 D5 D6 D7 D0D0 D1D1 D2D2 D3D3 D4D4 D5D5 D6D6 D7 D7 A12 A11 A10 A9 A7 A8 A6 A5 A4 A3 A2 A1 A0 A12 A11 A10 A9 A8 A7A7 A6A6 A5A5 A4A4 A3A3 A2A2 A1A1 A0A0 D1 D0 D1 D2 D3 D4 D5 D6 D7 A8 A9 A10 A11 A12 A13 A13 A14 A14 A15 A15 QE QD QC QB QA QG QF QE QD QC QB QA QA QB QC QD QE QF QF QA QB QC QD QE QF QG L1A L1B L1C L1D L1E L1F L1G L2A L2B L2C L2D L2E L2F L2G L3A L3B L3C L3D L3E L3F L3G H7 H6 H5 H4 H3 H2 H1 H0 H0 H1 H2 H3 H5 H4 H0 H1 H2 H3 H4 H5 H6 H7 H0 H7 H1 H2 H3 H4 H5 H6 QF QG H7 H6 L1A L1B L1C L1D L1E L1F L1G L2A L2B L2C L2D L2E L2F L2G L3A L3B L3C L3D L3E L3F L3G A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 CE 20 CS 26 W E 27 OE 22 D0 11 D1 12 D2 13 D3 15 D4 16 D5 17 D6 18 D7 19 R AM 6264 A0 10 A1 9 A2 8 A3 7 A4 6 A5 5 A6 4 A7 3 A8 25 A9 24 A10 21 A11 23 A12 2 CE 20 OE 22 W E 27 D0 11 D1 12 D2 13 D3 15 D4 16 D5 17 D6 18 D7 19 RDY/B 1 EEPROM 2864 XTAL2 18 XTAL1 19 ALE 30 EA 31 PSEN 29 RST 9 P0.0/AD0 39 P0.1/AD1 38 P0.2/AD2 37 P0.3/AD3 36 P0.4/AD4 35 P0.5/AD5 34 P0.6/AD6 33 P0.7/AD7 32 P2.7/A15 28 P2.0/A8 21 P2.1/A9 22 P2.2/A10 23 P2.3/A11 24 P2.4/A12 25 P2.5/A13 26 P2.6/A14 27 P1.0 1 P1.1 2 P1.2 3 P1.3 4 P1.4 5 P1.5 6 P1.6 7 P1.7 8 P3.0/RXD 10 P3.1/TXD 11 P3.2/IN T0 12 P3.3/IN T1 13 P3.4/T0 14 P3.7/RD 17 P3.6/W R 16 P3.5/T1 15 U6 80C 51 D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U7 74LS373 A 2 Y0 4 B 3 Y1 5 Y2 6 E 1 Y3 7 U 8:A 74H C 139 ALE RD W R PSEN GND R 15 10k R 21 10k R 22 10k R 23 10k R 24 10k R 25 10k R 26 10k R 27 10k VCC PSEN ALE EA R 28 10k EA C1 33P C2 33P X2 12M HZ GND GND W R RD AA AB AC RUN/S TO P R9 10k R E S E T C3 10uf VCC GND P3.4 P3.5 OUT1 21 ADD B 24 ADD A 25 ADD C 23 VRE F(+) 12 VRE F(-) 16 IN 3 1 IN 4 2 IN 5 3 IN 6 4 IN 7 5 START 6 OUT5 8 EOC 7 OE 9 CLOCK 10 OUT2 20 OUT7 14 OUT6 15 OUT8 17 OUT4 18 OUT3 19 IN 2 28 IN 1 27 IN 0 26 ALE 22 U1 ADC0808 X 1 Y 2 C 1 3 U 2:A 74H C 4066 X 11 Y 10 C 1 2 U 2:B 74H C 4066 X 4 Y 3 C 5 U 2:C 74H C 4066 X 8 Y 9 C 6 U 2:D 74H C 4066 X 1 Y 2 C 1 3 U 4:A 74H C 4066 X 11 Y 10 C 1 2 U 4:B 74H C 4066 X 4 Y 3 C 5 U 4:C 74H C 4066 X 8 Y 9 C 6 U 4:D 74H C 4066 X 1 Y 2 C 1 3 U 9:A 74H C 4066 X 11 Y 10 C 1 2 U 9:B 74H C 4066 X 4 Y 3 C 5 U 9:C 74H C 4066 X 8 Y 9 C 6 U 9:D 74H C 4066 X 1 Y 2 C 1 3 U 10:A 74H C 4066 X 11 Y 10 C 1 2 U 10:B 74H C 4066 X 4 Y 3 C 5 U 10:C 74H C 4066 X 8 Y 9 C 6 U 10:D 74H C 4066 P 1 . 0 O U T 1 O U T 2 P 1 . 1 P 1 . 2 O U T 3 P 1 . 3 O U T 4 P 1 . 4 O U T 5 P 1 . 5 O U T 6 P 1 . 6 O U T 7 P 1 . 7 O U T 8 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 1 2 U 11:A 74H C 04 3 4 U 11:B 74H C 04 5 6 U 11:C 74H C 04 1 3 1 2 U 11:D 74H C 04 1 1 1 0 U 11:E 74H C 04 9 8 U 11:F 74H C 04 1 2 U 12:A 74H C 04 3 4 U 12:B 74H C 04 REA D -ADC OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 AA AB AC V C C GND COM COM COM CLOCKIN 0-A D C IN 1-A D C IN 2-A D C IN 3-A D C IN 4-A D C IN 5-A D C IN 6-A D C SP ARE 1 2 U ?:A 40106 D 2 Q 5 CLK 3 Q 6 S 4 R 1 FF 7474 C 11 33p C 12 33p R? 10k GND GND X? 1MHZ CLOCK D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 10 74H C 373 D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 11 74H C 373 D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 12 74H C 373 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U 13 74LS48 LED1 LED2 LED3 GND GND GND A B C D VCC VCC GND GND C? 104 VCC GND D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 16 74H C 373 D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 15 74H C 373 OVER0 OVER1 OVER2 OVER3 OVER4 OVER5 OVER6 OVER A B C D LED1 LED2 LED3 7TH A N H XTAL1 XTAL2 RS-8051 RS-8051 XTAL1 XTAL2 D0 3 Q0 2 D1 4 Q1 5 D2 7 Q2 6 D3 8 Q3 9 D4 13 Q4 12 D5 14 Q5 15 D6 17 Q6 16 D7 18 Q7 19 OE 1 LE 11 U 17 74H C 373 GND GND GND LOW A 2 Y0 4 B 3 Y1 5 Y2 6 E 1 Y3 7 U 14 74H C 139 REA D -ADC 7TH A N H OVER LOW P3.4 P3.5 GND LOW 0 LOW 1 LOW 2 LOW 3 LOW 4 LOW 5 LOW 6 VCC GND C7 104 VCC GND C8 104 VCC GND C9 104 V C C GND R1 270 R2 270 R3 270 1 2 3 4 5 6 7 8 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 9 1 0 1 2 1 1 U? GREEN 1 2 3 4 5 6 7 8 2 0 1 9 1 8 1 7 1 6 1 5 1 4 1 3 9 1 2 1 0 1 1 U? RED R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R R? 270R L O W 6 L O W 5 L O W 4 L O W 3 L O W 2 L O W 1 L O W 0 O V E R 6 O V E R 5 O V E R 4 O V E R 3 O V E R 2 O V E R 1 O V E R 0 D 2 Q 5 CLK 3 Q 6 S 4 R 1 FF2:A 7474 R? 10k RUN/S TO P 1 2 U ?:A 74H C 04 1 2 U ?:A 74H C 04 1 2 U ?:A 74H C 04 1 2 U ?:A 74H C 04 ALARM LS? SP E AKER Q? 2N3704 ALARM