You could have downloaded LoKon 2.52 from our software library for free. The most popular version among LoKon users is 2.5. The default filename for the program's installer is Lokon.exe. The actual developer of the program is unknown. The program belongs to Photo & Graphics Tools.
From the developer:
Construction and Simulation of digital circuits. Contextsensitive help (600 KByte) and menues. More than 150 elements (gates, flipflops ...), oscillator, ROM/RAM, PLA and TTL elements. Oscilloscope. Comfortable creation ofown elements and macro elements.
You may want to check out more software, such as Live DXF2BMP or BabyaCAD, which might be related to LoKon.