How and why do you use your HP calc?

[Paul Dale]

I keep a vintage HP 45 on my desk at work for any odd calculation that comes my way. I usually carry a couple of others with me in case I need functionality that the 45 can't provide. Base conversions mostly but a few other things are sometimes required. I love the 45's LED display more than the LCD models.

At home, I've got an HP 25, an HP 32sii and a WP 34S next to me and I grab whatever.


Pauli