Thanks alot for such a huge amount of information

actually in INDIA every body is looking for a cheap solution when i went to people this idea for developing such a product for last one year every one told they will be intrested in a solution in few rupees which is solved by using one or two IR sensor assemblies But this time I found a really intresting jental man who is really looking for a better and effective soolution and as he asked my how it works then the only source of information i have is www.8052.com so i immidiately wrote it
well i have already forwarded the information which you people had forwarded to me but for next step i had to depend on you as to be really frank enough considering the theory is been covered very well in engineering but in practice the view is totally different and when you are new it is all the more worst

well thanks alot for the information
as soon as i face the next problem i will immidiately bother you

thanks once again
sachin