Saved me a heck of a lot of time in assembler class with the decimal -> hex -> oct -> binary conversions and direct hexadecimal entry.

[edit: forgot about entering fractions directly - pretty good for a solar powered calculator]

Yeah, only downside is that with 64-bit numbers these days things could get a bit painful to enter.

All we need is someone to add bluetooth and let you send your clipboard over to it :).

I couldn't resist, just grabbed one off of ebay for $16, curse you for posting it!