hi
i want to design a datalogger for measuring the 8 analog parameters and 2 digital parameters and store the data in 2X32k external ram. also i want to use the keyboard,2X16lcd,and one printer port & serial port to output the data.offcourse the rtc also i want to use as it is necessary for datalogger application.
if anybody can give me idea in designing the circuit for whole system with AT89c52,RTC1307 and 10 bit A/D , with two 16bit counters. if anybody is replying me please mention the memory locations for each i/o device to be connected

regards hemant