Help Ram connections !!!!

Why does it matter? Are the pins Bi-Di (then read would be a problem)? CMOS inputs shouldn't matter where they're tied to as long as it's inside the rails and not in the threshold region. I wouldn't short inputs together because it would increase fan-in and power consumption (slightly) for no advantage.

So Keith , do i leave the 4 unused data bits floating ???

No, you never ever leave any chip input floating. In this case, since it's RAM, strapping the pins to either Vee or Vcc would be OK, as long as you perform a write to each byte before trying to read it - that way, you won't blow out a pin trying to drive it against a short. You might say that these pins are "don't care", but who knows what happens to the rest of the chip when one of the output drivers gets blown?

But in most cases, I recommend pullup resistors - in this case, probably something in the range of 22K ~ 100K, since it's CMOS and doesn't draw any significant current.

Hope This Helps! Rich

Never! A floating pin often wants to go towards the middle and it may draw lots of current. Tie them one way or the other.

Now I see, assuming Bidirectional I/O. I got the impression that the RAM in question had separate I/Os; ground the gazintas and float the gazoutas.