Sorry, I know that I am disturbing and u all must be thinking that my IQ have dropped to "0", but if ur not given the specific residence no. and location of the person u know then how could u find out instead given a geographical map of the city. Sorry once more but see to it if u all can help me, because I really need some, for which I will be very much obliged and ever grateful. Thank you.
Unless you have some physical disability that impairs your use of the keyboard, please make the effort to type "you", "your", etc, in full. If you want "help", that implies that you are actually doing some work yourself, and require assistance with it. "Help" does not mean doing the whole job for you, and handing you the completed result on a plate! If you want someone to do the job for you, look in the Consultants Database - and be prepared to pay for the work! http://www.keil.com/condb/search.asp So, if you are actually going to do some of this by yourself, start by downloading and studying the application note from Atmel titled "Interfacing AT24CXX Serial EEPROMs with AT89CX051 MCU". You have been given the link at least twice before, but here it is again: http://www.atmel.com/dyn/products/app_notes.asp?family_id=647 For descriptions of the 8051 instructions, see the 80C51 family programmer's guide and instruction set - which is Chapter 2 of the so-called "bible" for the 8051: http://www.semiconductors.philips.com/acrobat/various/80C51_FAM_PROG_GUIDE_1.pdf