A comprehensive reference for electronics engineers and students. Suitable for both beginners and experienced enthusiasts. It serves as a guide when designing electronic circuits, projects, and prototypes, and is also ideal for quickly learning digital electronics. Covering both the theoretical foundations and reference data, it includes information on popular TTL and CMOS integrated circuits from the 7400 and 4000 series.

The application content is available in the following languages: English, French, German, Indonesian, Italian, Polish, Portuguese, Russian, Spanish, Turkish, and Ukrainian.

The app contains the following guides:
- Basic logic
- Families of digital chips
- Universal logic elements
- Elements with Schmitt trigger
- Buffer elements
- Flip-flops
- Registers
- Counters
- Adders
- Multiplexers
- Decoders and demultiplexers
- 7-segment LED drivers
- Encryptors
- Digital comparators
- 7400 series ICs
- 4000 series ICs

The content of the application is updated and supplemented with the release of each new version.