Texas TI-59: A tale in pictures

[jebem]

Final testing:


The Diagnostics from the solid state software Master Library gave me a "1" in the display after 10 or 20 seconds later, by typing:
2nd Pgm 0 1 SBR =



Now, this is really amazing.
After a small adjustment in the card reader speed (I had to slow down it a bit by rotating anticlockwise the single potentiometer in the PCB), I could successfully read the magnetic cards written by this machine 30 years ago!!!
In the example below, I loaded a so called gamma program.



Trying 5! ...



And the live demo...