The following was submitted on July 11th, 2007 at 12:47AM (PDT).
Message: I want to combine Ne555 with 74154 IC.The indication of the outputs must be shown with LED's but up to so far it need 15 outputs ,is it possible the way i did? if not i will need your assistance
Mail from CY
See these circuits you will get an idea, Using CD4514 is also possible.