George Varga wrote: > I would like to know about the 84,62,71 -ME chips. George, I am assuming that the chips that you are talking about are the Microchip 16C84, 16C62, and the 16C71, although they are not all 28-pin chips. The 16C71 is a 28-pin DIP micro with internal A2D conversion. Look here for the 16C71: http://www.microchip.com/Download/Lit/PICmicro/16C71X/30272a.pdf nearly 2Mb. The 16C84 is an 18-pin DIP micro with internal EEPROM. Look here for the 16C84: http://www.microchip.com/Download/Lit/PICmicro/16F8X/30445c.pdf about 1.1Mb. The 16C62 is an 28-pin DIP micro with 22 I/O pins. Look here for the 16C62: http://www.microchip.com/Download/Lit/PICmicro/16C6X/30234d.pdf about 3.6Mb! Good luck! Michael ************************************************************************* When the way of the Tao is forgotten, kindness and ethics must be taught. Men must learn to pretend to be wise and good. -- Lao Tzu *************************************************************************