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.
Thanks Mr Erik Malund for your suggestion. I know that there is no such chip as 89Cx051 but 89C1051, 89C2051 and 89C4051.