PCjs offers a variety of online machine emulators written in JavaScript. Run DOS, Windows, OS/2 and other vintage PC applications in a web browser on your desktop computer, iPhone, or iPad. An assortment of microcomputers, minicomputers, terminals, programmable calculators, and arcade machines are also available, along with an archive of historical software and documentation.
See pictures and you can see the calculator plugged in and numbers lit up in red. Comes with the original zippered Texas Instruments case and AC
Texas Instruments TI Programmable 57 Calculator with Case & AC Adapter, Working
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