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Flippy the Train app for iPhone and iPad


4.0 ( 4400 ratings )
Games Puzzle Educational
Developer: Karl Voskuil
Free
Current version: 1.6, last update: 4 years ago
First release : 12 Feb 2015
App size: 4.25 Mb

Build a train track to solve digital circuitry puzzles!

Flippy the Train rides the rails, flipping switches to model basic digital circuitry: NOT, AND, and OR logic gates.

After building these basics, reuse them in larger tracks to create the more-complex XOR gate and half-adder. What is the fewest number of track segments required to build a half-adder?

Includes a sandbox mode for creating arbitrary track for Flippy to ride.