Digital logic design app

This app is very useful for those who are learning digital logic design. The interface is designed in a very simple and professional way for the ease of users. The app contains both notes and converters like decimal to binary converter, decimal to hexa converter, binary to decimal converter etc. The app contains digital logic design notes which include following topics:
Decimal, binary, hex, octal conversion
Binary addition and subtraction
Binary multiplication and division
Minterms and maxterms
1s and 2s complement
9s and 10s complement
15s and 16s complement
The app also contains the best designed calculator tools which include:
number converter - binary decimal octal hexa
1s and 2s complement calculator
9s and 10s complement calculator
15s and 16s complement calculator
Binary addition calculator
Binary subtraction calculato