My first programmable device was a TI-57 Programmable Calculator (the Radio Shack EC-4000 version, Serial No. 9604427) purchased on October 7, 1978.
PCjs TI-57 emulator configurations are now available for your programming enjoyment:
- TI-57 with Original ROM
- TI-57 with Original ROM and Diagnostics
- TI-57 with Revised ROM and Diagnostics
Additional resources include:
Pictures of my Radio Shack EC-4000 are below. I have a hunch that if I peeled off the Radio Shack sticker on
the back (underneath my custom Dymo label), it would say
Texas Instruments electronic calculator.
I recently acquired an actual Texas Instruments-branded TI-57 as well, because while my EC-4000 still powers on,
a few of the buttons (like
0) don’t respond, and I wanted to have an operational TI-57 before taking my own apart.
The rechargeable batteries of both calculators were long dead, but it was easy enough to follow Dr. Monk’s Advice and “convert” both calculators to use a 9V battery.