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  • 497 messages
  • February 12, 2009 20:46
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February 12, 2009 20:46

Hewlett Packard (HP) is the brand with a large following. Many collectors only collect calculators of this brand. The general rule therefore applies that LCD is not collectible, and LED is, not for the LCD Hewlett Packard brand calculators.

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  • June 29, 2013 16:09
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June 29, 2013 16:09

HP calculators differ from most other models because of the different way of entering the calculation command. HP uses the Reverse Polish Notation. Basically, you use "stacks" and load a number into it. Then enter the next number, and then indicate what should be done with it.

A simple example: 4 enter 2 +

After entering the "+", 6 appear in the display. The addition of 4 + 2 has therefore been made.

The advantage of the RPN is in a number of cases a faster input of sums.

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