Электроника МК-52 offers on TAS

[Hlib]

I use an emulator (not a simulator) for the MK-61, which allows you to store 99 programs. In the android smartphone, it runs on a single battery charge three times longer than the physical calculator MK-61/52. If you insert a single Schottky diode into the power supply circuit in a real calculator, you will have an analog of an uninterruptible power supply when the calculator operates from a 110/220 V, if the main batteries are inserted into the power compartment. Here is a free emulator for android (this is the development of a fan of MK-61 from Russia):
https://drive.google.com/uc?id=1eDLoxugL...=downloadl