Series of articles about HP

[James_S]

Browsing through the net I came across a series of interesting articles about HP (and not only) calculators. I am sure many of you know all of it already but perhaps there are some who could benefit - enjoy!

"HP CALCULATOR HISTORY - THE HP-35

Introduced on July 1 1972, this was the first handheld electronic
calculator sold by HP, and the first ever to perform logarithmic and
trigonometric functions with one keystroke. As opposed to later HP
calculators, it has an x^y function, not y^x, and the trigonometric
functions work in degrees only. The story goes that it was made after
William Hewlett was shown a new scientific desktop calculator by his
engineers, and asked for a version to fit in his shirt-pocket. At
first, HP thought they would only make a few HP-35s for their own
engineers, as no-one else would be interested. Then they decided to
try selling it - and sold hundreds of thousands. This means that the
HP-35 is not particularly rare, but collectors will pay a good price
for one because the HP-35 was the first HP handheld. We celebrated its
twentieth anniversary last year, and articles about it were published
in the proceedings of our 1992 conference and in DATAFILE V12N2. The
latter article includes details of the three different types of HP-35
made."

Read more: http://www.hpcc.org/calculators/wmjarts.html
http://articles.latimes.com/2013/aug/28/...s-20130826
http://www.scienceclarified.com/Bi-Ca/Calculator.html