TI Business Analyst-II 28 SDIP Chip labeled TP0322-4NL IS 8109 PHILIPPINES die labeled 0320D-22 40 buttons 8-digit, 66-segment LCD -M.M.M.M.M.M.M.M Buttons Pin 2 Pin 5 Pin 8 Pin 13 Pin 16 batt + 2nd DUE FIX OFF ON/C Pin 15 N %I PMT PV FV Pin 3 x<>y CST SEL MAR K Pin 4 SUM+ % x^2 1/x / Pin 6 STO 7 8 9 X Pin 14 RCL 4 5 6 - Pin 10 SUM 1 2 3 + Pin 9 EXC 0 . +/- = 0320-22 1 NC 2 LCD common 3 LCD common 4 LCD common 5 LCD and KP row 6 6 LCD and KP row 5 7 LCD and KP row 3 8 LCD and KP row 4 9 LCD and KP row 1 (bottom) 10 LCD and KP row 2 11 LCD and KP row 7 12 LCD 13 LCD 14 batt+ and KP row 8 (top) 15 batt - 16 LCD 17 LCD and KP column 5 (right) 18 LCD 19 LCD and KP column 4 20 LCD and KP column 3 21 LCD 22 LCD and KP column 2 23 LCD 24 LCD and KP column 1 (left) 25 LCD 26 LCD 27 LCD 28 LCD 66 LCD segments S 8 7 6 5 4 3 2 1 - - - - - - - - STAT | | | | | | | | | | | | | | | | - - - - - - - - - FIN | | | | | | | | | | | | | | | | - . - . - . _ . - . - . - . - LCD signals pin 2 pin 3 pin 4 5 D7 G7 A7 6 E6 F6 F1 7 DP6 C6 B6 8 D5 G5 A5 9 E4 F4 B1 10 DP4 C4 B4 11 D3 G3 A3 12 E2 F2 D1 13 DP2 C2 B2 16 D2 G2 A2 17 DP3 C3 B3 18 E3 F3 C1 19 D4 G4 A4 20 DP5 C5 B5 21 E5 F5 A1 22 D6 G6 A6 23 DP7 C7 B7 24 E7 F7 G1 25 DP8 C8 B8 26 D8 G8 A8 27 E8 F8 E1 28 FIN S STAT