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The HP 200LX Palmtop PC (F1060A, F1061A, F1216A), also known as Project Felix, is a personal digital assistant introduced by Hewlett-Packard in August 1994. The user may exit from this gallery by exiting through the door at the end of the corridor. The software developers in the photographs are listed starting from left to right, then left to right and so on as follows:

  • Andy Gryc
  • Pat Megowan
  • Everett Kaser
  • Bill Johnson
  • Lynn Winter
  • Susan Wechsler
  • Eric Evett

The last panel on the right of the corridor contains a thank you message:

The photographs of the developers have been described as "a-maze-ing".

Self-test poem 1

This easter egg is in the HP 200LX self test mode. With the palmtop powered off, the user may press to start the self test mode, then cursor down to the display option. On pressing 14 times, to step through the various screens, the user comes to a screen of example text in the form of a limerick poem. The poem is as follows:

Self-test poem 2

This easter egg is in the HP 200LX self test mode. With the palmtop powered off, the user may press to start the self test mode, then cursor down to the display option. On pressing , then holding down while pressing 13 times, the user comes to a cryptic poem, relating to business issues faced by the software development team. The poem is as follows:

Self-test poem 3

This easter egg is in the HP 200LX self test mode. With the palmtop powered off, the user may press to start the self test mode, then cursor down to the display option. On pressing , then holding down while pressing 13 times, the user comes to an allegorical poem about the history and future of the HP LX palmtops. The poem is as follows (note that the project names for the HP 95LX, the HP 100LX and the HP 200LX are 'Jaguar', 'Cougar' and 'Felix' respectively, and that 'Felix' was the first LX to include Quicken):

Hidden development aid in 'More Applications'

This easter egg is in the built in System Manager of the HP 200LX. This 'easter egg' is probably more of a development tool than an easter egg, but, in any case, the user may display the function by first pressing the blue key to start 'More Applications'. The user may then hold down while pressing four times, followed by once. As long as the key is held down, the user will observe columns of data about System Manager compliant (.EXM) programs registered with the System Manager, along with other arcane program information.

Hidden hex calculator

The HP 200LX includes an undocumented calculator application named HEXCALC, written by Andrew Gryc. It provides arithmetical and logical operations in binary, octal, decimal and hexadecimal system. The utility can be added to the applications menu by an entry with the following fields:

  • Name: He&x Calc
  • Path: D:\BIN\HEXCALC.EXM

See also

  • HP 110 / HP 110 Plus
  • DIP Pocket PC / Atari PC Folio / Atari Portfolio
  • Poqet PC
  • Poqet PC Prime
  • Poqet PC Plus
  • ZEOS Pocket PC
  • Ben NanoNote
  • Sub-notebook (HP OmniBook)
  • Netbook
  • Palmtop PC
  • Ultra-mobile PC

References

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Further reading

  • [https://web.archive.org/web/20231125005038/http://www.retroisle.com/others/hp95lx/Articles/evolution.php]
  • [https://web.archive.org/web/20231121202746/https://lunduke.locals.com/upost/4897406/the-story-of-the-1991-hp-dos-palmtop]
  • The HP&nbsp;200LX: A Review by Rob Tillotson.
  • Sy's HP&nbsp;200LX review
  • Articles concerning the NASA STS-95 E-Nose experiment
  • "Off-the-Shelf" 200LX used by "Shade Tree Engineer"
  • The Electronic Nose and The Quadrupole Mass Spectrometer Array:
  • Results From The Space Shuttle STS-95 Electronic Nose Experiment
  • HP&nbsp;200LX Old-Computers.com Museum
  • 200LX Software S.U.P.E.R. software mirror, over 1500 programs and 200 databases for the 200LX
  • HP Palmtop Paper Online (Thaddeus Computing; Buy-Sell-Repair)
  • HP Palmtop Ring Homepage
  • Skolob's Hewlett Packard 95LX Palmtop Page (Information and FAQ on HP&nbsp;95LX)
  • Compatibility of the Sohoware ND5120 network card.