MrChallenger 40 SDIP marked TMC0273NLL P GAS 8031 SINGAPORE die labeled 0273A T0270D 16 DIP marked TMC0355 BNL P DCU 8035 SINGAPORE 8-digit 14-segment VFD with decimal points (unused) 38 buttons Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Vss Batt+ Replay Crazy Letters Letter Guesser Word Challenge Mystery Word / ON Pin 27 Level GO OFF Pin 30 A B C D E Pin 31 F G H I J Pin 29 K L M N O Pin 32 P Q R S T Pin 28 U V W X Y Pin 33 Z 2ND PLAYER CLUE ERASE SCORE TMC0273 1 N/C 2 KP - keypad col 1 (left) 3 K1 - keypad col 2 4 K2 - keypad col 3 5 K4 - keypad col 4 6 K8 - keypad col 5 (right) 7 FIL1 - 100 ohm resistor to VFD filament 8 FIL2 - VFD filament 9 VFD segment A 10 VFD segment B and TMC0355-2 (data/address 2) 11 VFD segment G1 and TMC0355-1 (data/address 1) 12 VFD segment E 13 VFD segment C and TMC0355-3 (data/address 4) 14 VFD segment D and TMC0355-4 (data/address 8) 15 VFD segment I 16 VFD segment J 17 VFD segment H 18 VFD segment M 19 VFD segment K 20 VFD segment L 21 piezo wire 1 22 VFD segment G2 23 VFD segment F 24 VFD N/C 25 N/C 26 TMC0355-5 (CLK) 27 VFD digit 2 and keypad row 7 and TMC0355-8 (M0) 28 VFD digit 4 and keypad row 2 and TMC0355-10 (M1) 29 VFD digit 6 and keypad row 4 30 VFD digit 8 (left) and keypad row 6 31 VFD digit 7 and keypad row 5 32 VFD digit 5 and keypad row 3 33 VFD digit 3 and keypad row 1 (bottom) 34 VFD digit 1 (right) 35 N/C 36 TMC0355-11 (/CS) 37 batt- 38 VSS - batt+ 39 VGG - piezo wire 2 and 15K ohm resistor to pin 21 40 VDD - TMC0355-12 (VDD) TMC0355 1 data/address 1 - TMC0273-11 2 data/address 2 - TMC0273-10 3 data/address 4 - TMC0273-13 4 data/address 8 - TMC0273-14 5 CLK - TMC0273-26 6 connected to pin 4 7 N/C 8 M0 - TMC0273-27 9 VSS - batt+ 10 M1 - TMC0273-28 11 /CS - TMC0273-36 12 VDD - TMC0273-40 13 N/C 14 N/C 15 N/C 16 N/C VFD Segments AAAAAAAAA FH I JB F H I J B F HIJ B G1G1 G2G2 E MLK C E M L K C EM L KC DDDDDDDDD