Learn PID control theory with structured tutorials covering basics to advanced topics. Simulate control systems and adjust parameters in real-time. Explore scenario applications and analyze system responses through graphical outputs.
Calculate discounts on items with up to 99% off. Apply multiple discounts to a single item. Adjust tax rates and other settings. Track prices for products. Compare deals across retailers. Set price alerts for specific items. Share codes with others.
The app trains mental calculation skills for close-up magicians. It cycles through logical phases and allows users to validate conclusions against correct responses.
