Pic A Day - Jan 29th 2009

Casio fx451 This is my Pic a Day for the 29th January, 2009. It's a Casio fx451, a superb calculator from the late 80s/early 90s.

It was perfect for me, it had the really useful fundamental constants (and no more), it have inbuilt unit conversion, it had clear and easy to use buttons.

The two ways this calculator could have been improved would have been to provide a way to change batteries and to update the logic (for 5 sin 30, you have to type 5 * 30 sin ...)

No big deal.

I got a couple of these off ebay, and use them often - one at work, one at home.