Help is required in 4 x 20 lcd programming

Hi all



i am using 4 x20 lcd in my projects, i require the help in following two ways



1:- I want to use my lcd and keypad at one port using latch 74LS/HC 375 .theoritcal it is possible but i need get some important information regard to experince user.????



2- i require its lcd & keypad codes help . the lcd is repsonsble to display the events messages and keypad is used to selection purpose like password entry, adc value of voltages and currents ect.......





if some reqire more information than i can broadcast regard to my project8052 based..