Thanks a lot to all those who responded to my query about the maximum speed of PIC 16F84A-04/P. About a year back, I first came to know about PIC microcontrollers after seeing them used in X10 home automation devices. Being an electronics & computer hobbyist, I got really interested in PICs and searched the Internet and collected as much information as possible on the PICs. I also ordered and received the CD and the Product Line Card from Microchip. I was keen to buy a flash PIC and had to wait for three months to get the 16F84A in the local market (Bombay, India). Though according to some the "-04" PIC can be overclocked to even up to 20MHz, I will use it at the rated speed of only 4MHz. That will ensure that my PIC stays alive and I continue to learn about it through my projects and experiments! Thanks & regards, Bala Chandar -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.