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74ls540n 74als27n 74als27n 74als27n 1 0 K Gnd + 5 V 9v

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+5V D1 1N4001 C2 470u/25V 100n 1 2 3 4 5 6 7 8 C1 IC3 7 C3 DIS OUT TRI CON GND +5V 8 4 R24 3 220 5 1 NE555 C4 220n R9 10k +5V R20 2 10n GND GNDGND GND Raspberry Pi X2 Q2 BC548 1 2 3 4 GND GND 1 2 3 4 1 19 A1 A2 A3 A4 A5 A6 A7 A8 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 G1 G2 74LS540N 18 17 16 15 14 13 12 11 IC4 +5V 6 R25 8 7 IC1C 2 IC1B 3 4 5 6 74ALS27N 12 74ALS27N Rear2 GND TRE VCC+ /RES DIS OUT TRI CON GND 8 4 3 5 1 1 3 5 7 9 SV1 +5V 220 R26 C5 NE555 C6 220n 10n GND IC1A 1 2 13 2 4 6 8 10 GND R7 1k X3 Rear2 11 10 9 2 3 4 5 6 7 8 9 Rear1 J4 1 GND 74ALS27N R6 10k R5 10k R4 10k R3 10k 2 3 4 5 6 R8 220k R2 10k R1 10k +5V Rear1 J3 1 Q1 BC548 +5V GNDGND Yellow 10k LED3 Front 2 3 4 5 6 TRE VCC+ /RES +5V 220k Q8 BC327-25 R21 4k7 +5V R18 10 R16 10 GND Q7 BC327-25 R19 4k7 +5V GND Q6 BC327-25 R17 k47 +5V Q5 BC327-25 R14 10 R12 10 Q4 BC327-25 GND R15 4k7 +5V GND R13 4k7 1 2 3 4 5 6 R10 10 10 Front J2 Q3 BC327-25 R11 4k7 1 2 3 4 GND X1 +5V GND +5V GND 6 Yellow R23 LED2 LED1 Red + 9V .. 24V Raspberry Pi 470 1.25T SV2 F1 1 2 3 R22 J1 GND