LadderTouchLite

LadderTouchLite is an educational app that teaches the basics of ladder logic, a graphical programming language. It offers two functions: execute prepared samples to observe how signals flow and answer questions to test your understanding.

The app presents elements—Input, Virtual Output, Internal Memory, Timer, and Counter—with practical limits (up to 5 inputs/outputs, up to 20 memories, 5 timers, 5 counters). Timers work on-delay (0.1–10.0 s) and counters can be reset by stopping the ladder. Elements can be inverted in the source area; timers and counters have distinct behavior in the destination area. There is no connection to external devices.