>My idea right now is to use a 74LS174 wired as a shift register 
>(4 bit interface to the LCD), two lines (clock and data), 

Use Myke Predko's 2 wire interface at http://www.rentron.com/Myke1.htm


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist