This is the coin sorting machine which I bought from the ebay around $100. It appeared that the price and functionality are comparatively more suitable than the other coin machines. As below image shows all coin slots per each coin size, and its total capacity is $70. (penny x 50 / nickel x 40 / dime x 50 …
Category Archives: NYU-ITP
How LEDs are made
// original document is from here Background Light-emitting diodes (LEDs)—small colored lights available in any electronics store—are ubiquitous in modern society. They are the indicator lights on our stereos, automobile dashboards, and microwave ovens. Numeric displays on clock radios, digital watches, and calculators are composed of bars of LEDs. LEDs also find applications in telecommunications …
