Hewlett-Packard HP-41C, CV

Date of introduction:  1979 Display technology:  LCD 14-segment
New price:  $325.00
 $175.00 (SRP 1988)
Display size:  10 + 2 
Size:  5.6" x 3.1" x 1.2"    
Weight:  5.5 ounces Serial No:  2321S40332
Batteries:  4*N cells Date of manufacture:  wk 21 year 1983
AC-Adapter:   Origin of manufacture:  Singapoore
Precision:  10 Integrated circuits:  
Memories:  63-0    
Program steps:  441 Courtesy of:  Peter Muckermann

The HP-41C could be called a small revolution in the pocket. Following the path of programmable calculators like the HP-67 or TI-59 it overcame their limitations of the stupid men-machine interface possible with a numerical keypad and a 7-segment display. The HP-41C added alphanumeric capabilities to both the display and keyboard using 14-segments and an ALPHA-key. In addition the memory capacity was enhanced and uses non-volatile integrated circuits (RAM) like the TI-58C. A total of 4 slots allowed further expansion of either RAM capacity, pre-programmed ROM-modules or peripheral devices like a card reader or printer modules. The HP-41C still uses the Reverse Polish Notation with the ENTER key instead the usual = key.

Texas Instruments developed with the TI-88 a similar calculator unfortunately it never appeared in the market place. It took some time before Texas Instruments took the leadership again with the first Graphics calculator TI-81 in 1990.

The pictured HP-41CV integrated 4 memory modules featuring 319 registers instead the 63 of the original HP-41C but is otherwise identical. The HP-41CX added the Time module and some additional functions to the HP-41CV.

An example of a memory module. HP-41CV_2.jpg (33419 Byte)
The optional card reader. HP-41CV_1.jpg (145808 Byte)
A HP-41CV wth additional card reader and installed memory modules. HP-41CV_3.jpg (100369 Byte)



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If you have additions to the above article please email:

Joerg Woerner, May 3, 2002. No reprints without written permission.