LED display in a business card
This is a business card that you will not giveaway that easy. It has LED display and PIC microcontroller and is powered from a 3V CR2032 button-cell battery. The microcontroller used in this application is PIC16F57 and display consists of 75 RED SMD LEDs. By pressing on any of four available buttons, an appropriate predefined message will be displayed on LED display.
This is a very good business card that you can give someone, knowing it will not be throwen away!
[ Source: tomward ]