I found my old Texas Instruments TI-74 hand held computer. It has 1 and 2 plane balancing, trial weight calculator, split or combine weights, static-couple derivation, convert from ACC/VEL/DIS. ect. I would have to copy the program and send to you. It was written in basic, but was never compiled to run in DOS. I use it with an old IRD 335 machine and also to check against some other machines. If you could find an old TI-74 computer on Ebay or somewhere, I could mail you the Ram Chip with the program on it.