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  Hewlett-Packard  41C  aka Coconut COCONUT   (14 pictures)
 
It exists several versions from the HP-41C, I only shown here some physical extern variations. There are also differences in the software (in ROM) and in the electronic.
It exists many and various extentions because of the 4 ports.
 
Hewlett-Packard 41C
Version 1.

Hewlett-Packard 41C
Version 1.

Hewlett-Packard 41C
Version 1.

Hewlett-Packard 41C
Version 2.

Hewlett-Packard 41C
Version 2.

Hewlett-Packard 41C
Version 2.

Hewlett-Packard 41C
Version 2.

Hewlett-Packard 41C
The main difference, between versions 1 (top) and 2 (bottom), is the front keys slope : it enhence the readability.

Hewlett-Packard 41C
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.

Hewlett-Packard 41C
Version 1 on the left, version 2 on the right.

Hewlett-Packard 41C
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.

Hewlett-Packard 41C
The front label clearly indicates HP-41C.

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

Hewlett-Packard 41C

Introduction date01/07/1979
End date1985
TypeRPN Scientifique
Last update date2010_02_11
ProgrammableY
RAM size64reg 1reg=7steps
ROM size12Kbits
Number of functions128
Alpha capabilitiesY
Number of keys39
Display typeLCD
Number of digits on display12.
Graphical (X x Y)N
Extention(s)Y 4 ports
Printerext
Savingmem, lecteur carte, HP-IL
Date or clock capabilitiesopt
MicroprocessorNut
Functions listScient
Size (length x width x thickness)144x79x33
Weight205gr
Batteries4xN or bat pack
External powerY/N
Power consumption
Twin
Made inSingapore, USA
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