Logic is a digital circuit simulator for education, written in Lazarus / Free Pascal. Place push buttons, switches, sensors, logic gates (AND, OR, NOT), counters, memories, lamps, relays, buzzers and 7-segment displays on a panel, connect them with wires and run the simulation. Power rails and a voltmeter make supply and voltage visible. Components can be shown as pictures or as IEC or ANSI schematic symbols. A built-in learning path with ten lessons and example panels guides students step...