Kosmos Astro

Chip labeled 
TMS1470NLHL
MP1133
ML 7936
SINGAPORE

die labeled
MP1133

19 buttons: 0-9, ., C, Sun (/), Mercury (*), Venus (-), Mars (+), B1, B2, Astro (=)

1 switch: Cal/Astro

VFD: 9-digit 7-segment

LEDs: 4 pairs of Green/Yellow - Sun/Purpose, Mercury/Mind, Venus/Love, Mars/Style


TMS1400 pinout

1  R0   button row / digit select
2  R1   button row / digit select
3  R2   button row / digit select
4  R3   button row / digit select
5  R4   button row / digit select
6  R5   button row / digit select
7  R6   button row / digit select
8  R7   button row / digit select
9  R8   digit select
10 R9   LED common
11 Vpp  VFD cathode
12 Vdd  
13 Init cap to Vss, resistor to Vdd
14 K1   button column
15 K2   button column
16 K4   button column
17 K8   button column
18 O7   7-segment LED segment DP / Mars Yellow LED
19 O6   7-segment LED G / Mars Green LED
20 O5   7-segment LED F / Venus Yellow LED
21 O4   7-segment LED E / Venus Green LED
22 O3   7-segment LED D / Mercury Yellow LED
23 O2   7-segment LED C / Mercury Green LED
24 O1   7-segment LED B / Sun Yellow LED
25 O0   7-segment LED A / Sun Green LED
26 OSC  pin 27 and 33pF cap to Vss and 4.7K resistor to Vdd
27 OSC  pin 26 and cap and resistor
28 Vss  


keypad matrix

     K1    K2      K4       K8
     
R0   0     5       Sun   
R1   1     6     Mercury
R2   2     7      Venus
R3   3     8      Mars
R4   4     9      Astro
R5   B1    B2       .
R6   C
R7                       Cal/Astro


Pin 1 measured 100 Hz

Example
11001 B1
after 24 seconds, displays 10.10.9.6
11099 B2
after 24 seconds, displays 10.10.11.7
ASTRO
LEDs lit - Sun Green, Mercury Green, Venus Green, Mars Yellow