MK 61/54

MK 61/54 Free App

Rated 4.83/5 (1,028) —  Free Android application by Stanislav Borutsky

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About MK 61/54

Emulator of "Electronika MK 61" and "Electronika MK-54" RPN programmable calculators.

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*** LONG-PRESS 'LIST OF ACTIVE APPS' BUTTON TO ENTER MENU ***
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Hint 1: touch calculator's indicator to toggle slow/fast mode. Indicator's blinking looks better in slow mode.
Hint 2: you can choose between MK-61 and MK-54 using menu option that becomes visible when calculator is switched off.

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Among USSR programmable calculators of 1980-s (B3-34, MK-54, MK-56, MK-61, MK-52), MK-61 was the most selling one.

Calculators are emulated on microcode level so they behave exactly like the original devices, including all non-documented features and inaccurate calculations. For ease of use application features saving and loading emulation states.

This app's emulation engine Java code is based on C++ source of Felix Lazarev's emu145 project.
Emulation was highly optimized for speed and should run in real time on any phone.

How to Download / Install

Download and install MK 61/54 version 2.3 on your Android device!
Downloaded 10,000+ times, content rating: Everyone
Android package: com.cax.pmk, download MK 61/54.apk

All Application Badges

Users love it
Free
downl.
Android
1.6+
Bug
buster
For everyone
Android app

App History & Updates

What's Changed
v2.3:
- fixed state saving instability on leaving app
- fixed layout resizing glitch
- switching calculator off and state saving/loading became faster
- added user preferences for:
* type of on/off and angle mode switches (checkbox/radio buttons or slider)
* vibration intensity
* buttons outline
* labels text size
More downloads  MK 61/54 reached 10 000 - 50 000 downloads

What are users saying about MK 61/54

Z70%
by Z####:

My lack of education is frustrating. New goal, learn why one would want this app. Then how to use it.

B70%
by B####:

My best friend through my university. Personally I would add some advanced features like context help for keys or mode to view and edit whole program fast. Anyway great job

H70%
by H####:

Спасибо за программу, даже не думал что есть!, а то б быстрее нашел. Ничего не помню сам, но пальцы помнят все! и стек и операции и программирование... Thanks!

Z70%
by Z####:

Спасибо, работает как машина времени, опять в 80-х :o)

T70%
by T####:

Thank you very much for this! Now if only I had all the calculator game books I had as a child. Спасибо!

Z70%
by Z####:

Needs some time to recall, how to use it. But anyway it's amazing!

Z70%
by Z####:

Учился программировать на МК61. Спасибо!

Z70%
by Z####:

I started my software developer's career because of this device....

V70%
by V####:

How do I get to the menu?

Z70%
by Z####:

Отлично. Спасибо

Z70%
by Z####:

Amazing experience!

Z70%
by Z####:

Excellent!!!!

Z70%
by Z####:

Half the keyboard in Russian. No equals button to get results. Nyet.

Z70%
by Z####:

عالیه

R70%
by R####:

Very nice app! It would be interesting to document if there are features that have not been completely implemented? The MK61 seems to be known for its "extra" undocumented features. rgds

T70%
by T####:

Elektronika MK52 is the first handheld i obtained in the school. The old guy is still around, almost like in day one, btw. The line of these machines was famous with the endless undocumented features, and this emulator seems to support them. I followed the description of the app and have seen how the base emulator was developed (with all the reverse-engineering methots, etc). Very good work! P.S. No ads and ridiculous permissions, one more big plus for the author!

T70%
by T####:

I ordered a real MK 61 from eBay after trying this emulator. The behavior is exactly the same, except the emulator runs programs a little bit faster than the real one. A fun calculator to learn how to use.

T70%
by T####:

Brings back some very precious memories... Thank you so much.

B70%
by B####:

Old memories... Great job done.

T70%
by T####:

Ностальжи. Прекрасная программа.

K70%
by K####:

Found online. Absolutely the best.

F70%
by F####:

Спасибо за программу, даже не думал что есть!, а то б быстрее нашел. Ничего не помню сам, но пальцы помнят все! и стек и операции и программирование... Thanks!

C70%
by C####:

At least ENGLISH... GOOD APP, IT APPEARS TO BE A WELL DONE JOB... CONGRATULATIONS!

R70%
by R####:

У меня был МК-61 примерно в 1989-м и у меня до сих пор есть 2-3 книги, одна из которых с играми для этого программируемого калькулятора. Будет чем заняться на выходных с моим 11-летним сыном :) Спасибо, Станислав!

K70%
by K####:

Любимый калькулятор на дроиде. Пошустрей бы правда

N70%
by N####:

Elektronika MK52 is the first handheld i obtained in the school. The old guy is still around, almost like in day one, btw. The line of these machines was famous with the endless undocumented features, and this emulator seems to support them. I followed the description of the app and have seen how the base emulator was developed (with all the reverse-engineering methots, etc). Very good work! P.S. No ads and ridiculous permissions, one more big plus for the author!

N70%
by N####:

Прекрасный эмулятор. Спасибо!

N70%
by N####:

Нлстальжи. Прекрасная программа.

U70%
by U####:

Just like the real calculator, with two important additions: ability to save and recall calculator states, so you don't need to retype programs, and a turbo mode for fast calculations. Moreover, it is two calculators in one, with an easy way to switch betwen the two. Great nostalgic value for me! Thanks!

X70%
by X####:

У меня был МК-61 примерно в 1989-м и у меня до сих пор есть 2-3 книги, одна из которых с играми для этого программируемого калькулятора. Будет чем заняться на выходных с моим 11-летним сыном :) Спасибо, Станислав!

Y70%
by Y####:

I wonder if there are any plans to support MK-52 (along with "A^" and "^v" commands)?

Y70%
by Y####:

Осталось теперь вспомнить как оно работает...

Y70%
by Y####:

Дал бы 10 звёзд если мог. Он даже эмулирует еггогологию! Такое впечатление что портирована родная прошивка.

Z70%
by Z####:

Одна кнопка включения - уже зачёт.

Y70%
by Y####:

Очень ждал ! Наконец то пройду весь Кон-Тики )

Y70%
by Y####:

Присоединяюсь к человеку, который хотел бы поставить 10 звёзд. Потрясающее приложение. Вот уже два часа медленно, но верно вспоминаю, как пользоваться этой машинкой. Даже все чудачества, которые были в оригинальном калькуляторе, всё понимает. Это целая эпоха. Тем, кто сейчас закончил институт и пишет на объектно-риентированных - не понять. Было правило, любую программу можно уменьшить на 1 байт. И оно работало. И мы соревновались в этом. И это всего при 105 байтах программы.

G70%
by G####:

Великолепный генератор ностальгии :-) Интересно, тут зггоги и эггоги (числа больше 1е100) так же чудесно будут себя вести?

H70%
by H####:

Thank you for the excellent job. This calculator series was missing by android users.

Y70%
by Y####:

I like to have this emulator on Android eventually. Giving 5 stars in hope that the author will improve the app. There is a really annoing bug with disappearing exponent value, look and feel is also far from realistic even comparing to the IPhone app. Update: Version 1.6 is WAY better than 1.4 that I previously reviewed. The interface is satisfactory realistic, the screen size bug is fixed. I'm just happy to have the old friend back. Thank you, Stanislav, it's a great job! The only minor issue I discovered so far is r-grd-g switch that is not working correctly in grd position. The emulator interprets grd as degrees, when it is grad actually. Sin(100 grd) = 1. I don't know who is using grads these days, but... Hope it will be fixed soon.


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Rating Distribution

RATING
4.85
1,028 users

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