My collection of HP calculators

<Notes> from July 2015:

Recovered using way back machine (again!)
Used to be at http://home2.swipnet.se/~w-21015/mycollec.html
This is how web pages looked in 1996
The collection has grown since
The picture was taken with an Epson PhotoPC with a whooping VGA-resolution (i.e. 0.3 MPixel) see EXIF data
The hit counter has stopped working, but it was working around 2000
Search engine Alta Vista not replaced with Google

</Notes>

Clickable image

There is some new stuff here

, and some links here

The collection

On this picture you can see a range of HP calculators made from 1972 through 1993. I'm pretty proud of having the heavy classics, HP-35, -80, -45, -65, -67, and -97. I still would like to get a working -55.

Among the recent additions there is an HP-75 with HP-IL peripherals. The peripherals include a tape drive and a thermal printer. All units are of course battery powered.

The above picture is not complete, one or two units are missing, and I'm not sure whether I should put the HP LX series among the calculators. It's more of a PC, and besides that it's my everyday tool for keeping track of my daily schedule.

Each of these calculators comes with it's own story. Quite a few of them were bought by me brand new or at clearance sales. Some are bought second hand or received as gifts on various occasions and still some were traded for other calculators. If you are prepared to make a deal, drop me a line.

Calculators on the picture ordered by manufacturing date

HP-80, Yes, this beauty is made as early as November 1972
HP-35, The most classic HP ever? This one dates back January 1973
HP-65, August 1973
HP-45, Information is missing on this one, but it's probably from 1974
HP-67, March 1976
HP-25A, February 1976
HP-29C, March 1976
HP-97, March 1977
HP-33E, September 1978
HP-12C, August 1982
HP-16C, September 1982
HP-75C, December 1982
HP-15C, February 1983
HP-41CV, May 1983
HP-71B, February 1986
HP-28C, June 1987
HP-48SX, April 1991
HP-100LX, June 1993

Some late additions are missing on the picture

HP-01, YES! I've got one. HP's only wrist watch. Came with a built in calculator. Not RPN, but still. Rated extremely difficult to find.
HP-48GX
HP-49G, the most up to date tool for calculation
HP-95LX, HP's first DOS-based palmtop
HP-200LX, BIOS dated May 1994
HP OmniBook 300, HP's attempt to make a battery powered DOS 5 / Win 3.1 sub note book
HP OmniBook 800, Today an adequate tool for the traveler, 1.7 kilogram

The wish list

HP-55, A classic. The first with a built in stop watch, not counting the HP-45
HP-70, This was an ugly one, it didn't sell well. It was an inexpensive financial calculator.
HP-85, A great machine for doing math and simple control applications on the desktop. But is it really a calculator? It's more of an early desktop computer with built in screen, printer and tape drive.

The mission

To acquire at least one calculator every year
To specialize in battery powered units
To produce benchmarks on processing capabilities

Why?

This is what really got me interested in computing back in 1973, or was it 1974? This was really pre everything in microprocessors. I think Intel had the 4004 and 8008, but there was not an operating system in sight and there was definitely no languages. Did you say application? Don't bother. At these days the average computer addict called some LEDs flashing a major break-through.

Links to sources of information

	Hewlett Packard
	Two guys gets an idea in a garage ...
	The Museum of HP Calculators
	How to fix a broken HP-calculator
	A load of reference material and programs
	comp.sys.palmtops
	comp.sys.handhelds
	Alta Vista

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This page was last updated 1999-12-01.