Ummm what about a 7480 :)
A gated full adder? (I had to look it up...). I have a data sheet which
even includes a transistor-level schematic.
Right now, the two CDROMs are easier for me to
reach
than the half-dozen or so TI databooks too :-)
I find most of the time I need a data sheet I have to
surf the web.
Prolbems are that I can't access the web or read CD-ROMs at my workbench
where I do most of my designing (I prefer to design with real components
and a soldering iron), and anyway, it's a lot easier to flip through a
databook looking for interesting chips than to display a pdf (every
machine I've ever used, including fast PCs owned by friends of mine, take
a noticeable time to display a page from a pdf file. A lot longer than it
takes me to glance at a page and see if it could possibly include the
information I am looking for).
-tony