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26-03-2016  (4287 ) Categoria: Articles

Desktop calculators

http://www.oldcalculatormuseum.com/mits7440.html

http://www.decodesystems.com/casiocalcs.html

http://www.decodesystems.com/pe-71nov.html

http://www.rskey.org/CMS/index.php/the-library/11

http://www.epocalc.net/php/liens_epocalc_e.php?nom=Calculators




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Mechanical Calculators






I collect early nixie tube, electro-flourescent, LED and scientific calculators from nearly any manufacturer. I'm particularly interested in any calculator or computer made by Hewlett-Packard before 1985.

Some of those HP calculators were made well before 1985. For instance, HP's first programmable calculator, the HP-9100A (pictured at right), was introduced in 1968. I would very much like to find 9100A and 9100B calculators, peripherals, manuals and other documentation. You can read more about the 9100 models here.

To the left is an HP-46, the desktop version of the HP-45, HP's second handheld scientific calculator (the HP-35 was the first handheld). The LED display on the HP-46 was an optional feature.

The photo to the left is from a Remington 1259S, which is internally identical to the Casio FX-1. The display is made up of nixie tubes, where each digit is represented by a shaped wire inside a sealed glass tube. I have more information about nixie tubes here.

Even though I'm interested in almost any old calculator, there are some models that I'm specifically looking for. These include:

  • APF Mark 55

     

  • Busicom 141PF

  • Casio AL1000 (AL-1000)
  • Casio 121-A
  • Casio 121-K
  • Casio AS-C
  • Casio AS-L
  • Casio FX-1
  • Casio FX-3
  • Casio fx 201P
  • Casio fx 202P
  • Casio PRO fx-1

     

  • Commodore 207CB (electro-mechanical)
  • Commodore M55

     

  • General Electric CE93

     

  • Hewlett-Packard HP-01 (wrist watch)
  • Hewlett-Packard HP-10
  • Hewlett-Packard HP-19C
  • Hewlett-Packard HP-55
  • Hewlett-Packard HP-70
  • Hewlett-Packard HP-81
  • Hewlett-Packard HP-91
  • Hewlett-Packard HP-9100A and 9100B
  • Hewlett-Packard HP-9805
  • Hewlett-Packard HP-9830
  • Hewlett-Packard HP-9831

     

  • Melcor SC-535

     

  • Omrom 12SR (SR-12)

     

  • Tektronix 21
  • Tektronix 31

  • Texas Instruments SR-22
  • Texas Instruments SR-60
  • Texas Instruments TI-45
  • Texas Instruments TI-150
  • Texas Instruments TI-450

I'm also looking for maintenance and repair information, especially Service Manuals, for the following machines:

 

  • Friden 130
  • Rockwell 960

I'd also like to find some specific accessories for the HP-71B handheld calculator/computer:

  • 82441A, FORTH/Assembler
  • 82478A, FORTH/Assembler/Debugger
  • 82478-60001, HP-71 Debugger
  • 82490A, HP-41/HP-71 Translator

Although I'm mostly interested in electronic models, I would also like to find a Curta type 1 or type 2 mechanical calculator.

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