Time will always be“of the essence” for professional engineers and amateur enthusiasts alike. This can certainly be said about the process of designing circuits involving Light Emitting Diodes (LEDs).

An LCD module DMC-16207 of 2×16 was used for prototyping the LED calculator since it uses the Hitachi chipset to produce a view around 3 ½” wide. An LCD module DMC-16207 of 2×16 was used for ...