ECN Forum Forums General Topics of the Trade General Discussion Area Calculators?

first calculator....battery operated... 1968???I graduated in 1969 and like above, i use the slide rule, even in college....i have maybe 30 sliderules,,,different sizes(6inch, 4inch, 12ish in(some made of bamboo.) i even have an aircraft sliderule designed just for load calculations from around 1950...

p.s. do any of you use the electrical calculators and esp the model that you can update! input please

My brother got an old Nastional Semiconductor (or was it NEC) LED one. I had an LED TI-30.
At one time I had a few VFD calculators, rather basic ones. Not going to mention the LCD ones I went through school with in the 80s, except I had a good scientific one that disappeared.
Now I have a few cheap basic LCD types.

I have an old early LCD Sharp here (uses a 9V battery).

[This message has been edited by classicsat (edited 06-08-2004).]

First calculators I recall were HP desktop units about the size of a breadbox, programmable with big magnetic cards (about 3"x7"). Freshman year of college, 1971, the HP-35 appeared. Only those guys on the G.I. Bill could afford one, at about $400. For the rest of us, it was the old "slip stick" or slide rule.

When I was at University as a sophmore, I bought a second hand HP-45. It saw a lot of use! Managed to afford it because I worked two full-time jobs during the summer.

I still have the '45, with leather case, 2nd battery pack charging stand, etc! I ought to make up a couple of new battery packs for it...

Cliff

[This message has been edited by amp-man (edited 06-08-2004).]