Terminal emulator application for Android OS extendible
Termux is an Android terminal emulator and Linux environment app.
http://hardwarelibre.esy.es/
Third-party TI-84 Plus CE / TI-83 Premium CE emulator
Best IDE for Beginners
ECEbuntu - a customized operating system designed for ECE
The functional model of the old calculator series Wang 700 and 15VSM
The behavioral model of the old Soviet calculator EPOS-73
Tiny Linux desktop distribution in just 14 MB
A Casio Fx702p handheld-computer emulator
1614P emulator