Hewlett-Packard HP-42S Scientific programmable calculator

General specifications
Type Scientific programmable calculator
Production years 1988 - 1995
New price USD 120.00
Operating system n.a.
Chipset/CPU Saturn
I/O IR output
Performance index 13
Entry method Reverse Polish Notation
Precision 12 digits
Advanced functions

Forensic result 8.99999864267

Scientific programmable calculator: Hewlett-Packard HP-42S
Programming model Fully-merged keystroke entry
Programming features

Program display Mnemonic
Program editing Auto-insert program entry
Programming 7 kB
Data 7 kB
Functions + -
Type LCD
Size 13116 pixels
LWH 1527612 mm
Weight 170 g
Batteries 3LR44
External power -
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Scientific programmable calculator: Hewlett-Packard HP-42S

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This page was last modified on May 12th, 2008

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4 Responses so far

Hi, I am selling a 42s RPN HP Scientifc Calculator with original pouch. You can ask me any questions and view pics at the below link. I won't respond to direct responses on this forum as i am not registered here. Check out my item. Thanks :)

March 31st, 2010
There is free emulator for the HP-42S downloadable directly from the author at: http://thomasokken.com/free42/
March 10th, 2010
I too am interested in purchasing A HP 42s RPN scientific calculator. Previously i have made appropriate land survey programs for the calculator and that foundational knowledge is but a dim memory now.
I would be interested if you have one for sale or know how i could get hold of one
Cheers Andrew Clough

andrew clough
February 27th, 2010
I am interested in purchasing a HP 42S RPN Scientific Calculator. Due to a head injury, my son can not learn new things but, can retain prior knowledge. The HP 42S is something he is familiar with and competent enough to use.
I would appreciate your letting me know if you have one for sale. Thank you so much. Regards, Sharon
Sharon Dyck
January 5th, 2010