A PCjs emulation of the Texas Instruments TI-57 Programmable Calculator is provided below. It is one of the most faithful TI-57 emulations currently available and runs at the same speed as the original device.
Other TI-57 configurations include:
Above are a few EC-4000 programs I wrote back in 1978-1979. These are some of my earliest “computer programs,” written when I was in high school, so needless to say, they come with no guarantees. Use at your own risk.