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  Hewlett-Packard  41CX  aka Coconut HONEYNUT   (19 pictures)
 
It exists several versions from the HP-41CX, I only shown here some physical extern variations. There are also differences in the software (in ROM) and in the electonic.
It exists many and various extentions because of the 4 ports.
 
Hewlett-Packard 41CX
Version 1.

Hewlett-Packard 41CX
Version 1.

Hewlett-Packard 41CX
Version 1.

Hewlett-Packard 41CX
Version 1.


Hewlett-Packard 41CX
Version 2.

Hewlett-Packard 41CX
Version 2.

Hewlett-Packard 41CX
Version 2.

Hewlett-Packard 41CX
Version 2.


Hewlett-Packard 41CX
Version 1 on the left, version 2 on the right with its rounded display.


Hewlett-Packard 41CX
A customized version 1 (one of the early 41CX).
The keybord is covered with white mask, nothing unusual with that : all the 41 usually do that...

Hewlett-Packard 41CX
Customized version 1, behind.

Hewlett-Packard 41CX
The interior teaches us that at the base a 41CX, is nothing other than a 41CV with a little more ROM (normal): 3 printed boards (PCB) for display, keyboard and CPU; even the components places on the CPU which are rather similar. We can see, on keyboard PCB middle left, the contacts for the famous phantom external power.

Hewlett-Packard 41CX
We can see the 2 levels of ROM/RAM chips.
For the customization, 2 X-Memory moduls were integrated into the calculator (to free external ports), and wires where sealed on the CPU PCB and connected to the moduls part ...

Hewlett-Packard 41CX
... to change the CPU clock speed and also to cut the buzzer.

Hewlett-Packard 41CX
Customized version 1 on its box.

Hewlett-Packard 41CX
Customized version 1.


Hewlett-Packard 41CX
A version 2 ...

Hewlett-Packard 41CX
... openned.
There is mainly one PCB for display, keyboard and CPU. Don't ask me what does the little brown. The contacts for the external power are no more there : this version has been optimized.

Hewlett-Packard 41CX
To finnish, there are very light differences on the front labels.

Introduction date01/10/1983
End date1990
TypeRPN Scientifique
Last update date2010_02_11
ProgrammableY
RAM size320+127reg, 1reg=7o
ROM size24Kbits
Number of functions223
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 capabilitiesY
MicroprocessorNut
Functions listScient
Size (length x width x thickness)144x79x33
Weight200gr
Batteries4xN or bat pack
External powerY/N
Power consumption
Twin
Made inSingapore
Link(s)

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