Hi Yes - some programmers like the one I have from Forest Electronic Developments let you program the user ID with the device sequence allowing a count of how many times the 84 has been programmed being embedded in the 84. If you know how long it will last then you can permanently use it for something that isn't likely to change. Tim At 07:59 27/01/97 -0600, you wrote: > Is there any way to tell when a 16C84 is getting close to the end of >its reprogrammability so that one can put some stable code in it and >permanently use it for something that isn't likely to change? > >Martin McCormick > ------------------------------------------------------------------ If you can read this, it is the end of the message! My web pages are at http://web.ukonline.co.uk/members/tim.kerby/ My PIC site is at http://web.ukonline.co.uk/members/tim.kerby/pic/ It needs your projects! ------------------------------------------------------------------