These are various web widgets i developed a decade ago. These were tutorials in Electronics and Technology. It also demonstrates usability issues in small devices and using JS-CSS-Ajax in a Innovative way to make GUI dynamic, interactive and contextual. Some of the Ideas were the first of its kind in the GUI design.
Scientific Calculator - Scientific Expression, Formula Calculation. Dual Digital Dice - Random Dice with Digital Readout, Quick Results. Electronic Toss - Random but Reliable Tri State results, Yes, No and Po Digital Electronics Tutors