How to desing Circuit use software

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link for download this app-everycircuit.com/
Visualize
Dynamic animations of voltages, currents and charges are displayed right on top of schematic. Detailed visualization gives insight into circuit operation like no equation does!
Simulate
When you build an arbitrary circuit, EveryCircuit shows you how it works, even if you have just invented a new design. This is made possible by a custom-built circuit simulation engine under the hood.
Interact
Adjust circuit parameters while simulation is running and see how that circuit responds - all in real time! The touchscreen interface makes it feel like you are building circuits with your own hands.