|HP codename, series||Davinci, Pioneer|
|Type, Precision, Input Mode||Scientific, 12 BCD digits, exponent ±499, Reverse Polish Notation|
|Performance Index||13. This is about 5 times as fast as the HP-41C.|
|Memory||Permanent memory. 8192 bytes for program and all data, program and variables shared|
|Display||132x16 LCD dot matrix, 22x2 characters|
|Special features||Two line display showing X and Y register or X register and
top function key assignments. Solver (root finding), matrix operations,
numerical integration, complex numbers, strings, various curve fitting
models. Software compatible to HP-41. Graphics capabilities and
infrared port for printing.
Works with the HP Infrared Printer.
|Original Pricing, Production||31.10.1988 ($120) - 1.3.1996 (approx. $120)|
|Batteries||3x small button sized cells|
|Dimensions||Length 14.7cm, Width 7.8cm, Height 1.5cm|
RPN Scientific Calculator Owner's Manual, June 1988 (PDF)
HP-42S RPN Scientific Programming Examples and Techniques, July 1988 (PDF)
HP-42S Fast Mode.
Hardware and Software details (MoHPC)
For Machine language programming see comment about HP-17B.
Hidden matrix functions (local page).
|Comment||One of HP's absolute high-end machines. It was designed to be
code-compatible with the HP-41. The number of features is overwhelming
and covers much of what can be found in the HP-15C and HP-32SII plus
full high-resolution graphics capabilities. In the 300+ pages manual
the engineers proudly note "... an efficient operating system has been
developed..." - indeed this is no exaggeration! Different from the
HP-32S/HP-32SII program and variable names are not restricted to a
single letter but can have lenghty names like in the HP-41.
Compared to the HP-32SII it doesn't support fractions - and it is only about half as fast.
Its biggest disadvantage is of course that programs cannot be stored on magnetic cards or read in using a bar code wand or some serial PC interface. The serial interface came only later with the much larger HP-48.
According to Nelson M. Sicuro the ROM version of the HP-42S can be determined as follows:
|Back To Contents|