|HP codename, series||Enterprise, unknown
|Type, Precision, Input mode||Scientific, 12 BCD digits, exponent ±499, Algebraic|
|Programmable||Yes. Algebraic version of RPL with high level
language features (IF-THEN, FOR-NEXT, loops etc.). User-definable aplets.
|Performance Index||17. This is pretty bad. 12 years before
the HP-28S reached an index of 54!
Same as the HP-40G.
|Memory||256kB, 232kB available to user. Permanent memory|
|Display||132x64 pixel black&white LCD, 22x8 characters|
|Special features||Infrared port for printing to the HP Infrared Printer and for
aplets with other HP-39G units. Interactive aplets for educational
|Original Pricing, Production||2000 (approx. $80) - 2002 or later
|Dimensions||Length 18.4cm, Width 8.7cm, Height 2.3cm|
HP-39G/40G User's Guide (English, PDF, V1.1)
hpcalc.org: HP39 Documentation Files.
hpcalc.org: HP-39G/40G programs.
Moravia Consulting: HP-39G/40G Features.
Alan Lark's HP39G Resource Page.
HP HOME view, C. Croft
|Comment||For a comparisn of the HP-38G/39G/40G/48XX/49G
see this overview.
Apparently, this unit has been designed mainly for educational purposes. The built-in aplets provide a "hands-on" access to certain mathematical concepts.
A big drawback are the rubber keys because they make the keyboard feel sluggish. It is impossible to quickly "hack-in" calculations or programs. Besides, it takes quite a while to display the various menus. All this makes a programming cycle (edit, quit editor, run, enter programming menu, edit) very slow.
Furthermore, the keyboard labels are a real mess! The orange ALPHA letters below to the key above but the blue SHIFT symbols to the key below. Very confusing, ie. when it comes to enter the SPACE key...
Note that the HP-39G and HP-40G are identical except that the HP-39G offers an infrared port and the HP-40G the CAS (Computer Algebra System) software.
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