
Version 1.

Version 1.

Version 1.

Version 2.

Version 2.

Version 2.

Version 2.

The main difference, between versions 1 (top) and 2 (bottom), is the front keys slope : it enhence the readability.

Another difference is the presence of 2 connexions points on the HP-41C side, but only on the older versions.
These points, which officialy were never used and it is for that that they were supressed, were originaly envisaged for an external power supply.
Version 1 at top, version 2 bellow.

Version 1 on the left, version 2 on the right.

And to finish, an extraterrestrial at the HP-41C : a version with the most recent display and,
I suppose (because I didn't open it), the electronics which goes with.
The edging around the keyboard is, like on all 41C, of silver color whereas it is of gold color on the 41CV and CX.

The front label clearly indicates HP-41C.

The back label is a 41C label. The serial number is indicates a 1980 building date : this calculator were repaired.

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Introduction date | 01/07/1979 |
End date | 1985 |
Type | RPN Scientifique |
Last update date | 2010_02_11 |
Programmable | Y |
RAM size | 64reg 1reg=7steps |
ROM size | 12Kbits |
Number of functions | 128 |
Alpha capabilities | Y |
Number of keys | 39 |
Display type | LCD |
Number of digits on display | 12. |
Graphical (X x Y) | N |
Extention(s) | Y 4 ports |
Printer | ext |
Saving | mem, lecteur carte, HP-IL |
Date or clock capabilities | opt |
Microprocessor | Nut |
Functions list | Scient |
Size (length x width x thickness) | 144x79x33 |
Weight | 205gr |
Batteries | 4xN or bat pack |
External power | Y/N |
Power consumption | |
Twin | |
Made in | Singapore, USA |
Link(s) | |
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