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The HP41 Corner

The HP41 Corner

The HP41 Corner

The HP41c calculator, produced from 1979 until 1990, was the standard in engineering and sciences during most of its life. Programmable, alphanumeric, with a high contrast LCD screen, and expandable, it was a true computer in your pocket. Here is our web hommage to it.

Its capabilities could be extended by means of ROM modules with additional functions, and with interfaces it could use printers, plotters, mass storage devices, bar code readers, measurement instruments, etc.

Recently, the user community has developed both new software in ROMs (like the Sandmath family) and hardware: a circuit that substitutes the original and throroughly updates the calculator in terms of speed, memory and functions, including all known modules ever developed (the HP41CL from Monte Dalrymple)


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1 - 30 of 46 results

lower post long screw - inox

Product no.: lowerscrew

Two long screw for the lower screw posts of HP41c calculators

1.00 / 2 piece(s) *
In stock

New Set of 4 screw for HP41 - inox

Product no.: Screwset

Two long screw for the lower screw posts of HP41c calculators + two long screws for upper posts.

2.50 / 2 piece(s) *
In stock

lower post long screw - black pair

Product no.: lowerscrewblack

Two long screw for the lower screw posts of HP41c calculators - black

4.00 / 2 piece(s) *
In stock

Spacer set for repairing old HP41c

Product no.: SpacerSet

Set of 8 pairs of spacers for nut-screwed full-nut HP41c calculators. Substitutes the nuts that are screwed on the lower posts to secure the circuit, 

10.00 *
In stock

Assembly kit for HP-41c battery bay and expansion ports

Product no.: AssemblyFlex

Parts for battery-back port module repair kit, or module assembled for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price for EU customers. Please choose option!

New price: cheaper circuit translating to 10% lower price!

55.00 *
In stock

Complete HP41CL

HP41CL with the latest version of Systemyde circuit

 

700.00 *

HP 41C Scientific Calculator - USED

Product no.: HP41c - used

HP41c perfectly working, with all port covers and battery holder in HP 3D printing process. The battery holder has new stainless steel springs and battery retention wings. 

It has a couple of small nick in the lower part of the body (see pictures) and the USER key feels soft (but registers 100%)

120.00 *
Old price 145.00 €
In stock

HP 41CV Scientific Calculator - USED

The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Later came the HP-41CV, with 4 times the memory space.

This is a very good sample, perfectly working, with a small crack in the screen (see pictures) and name written in original battery box. Comes with all port covers (the side cover is The Calculator Store's 3D printed part). Comes with no case

145.00 *

HP 41C Scientific Calculator - USED

Product no.: HP41c - used[2]

HP41c perfectly working, with all port covers and battery holder in HP 3D printing process. The battery holder has new stainless steel springs and battery retention wings. 

The screen has a small glass indent in the top right corner, as seen in the pictures, not affecting readability or performance.

120.00 *
Old price 145.00 €
In stock

HP 41C Tall Keys Scientific Calculator - USED

Product no.: HP41c tall keys - used

HP41c Tall Keys, perfectly working, with all port covers and no traces of rusting. Back and side ports and case are originals and included

English 120.00 *
In stock

New HP41c Lower Post Repair Kit

Product no.: Lower Post Repair Kit

Set of pieces needed to repair successfully the lower posts of HP41C, 41CV and 41CX full nut calculators, including zebra connectors, lower post part, and keyboard support for clothes' pegs to protect the keyboard

55.00 *
Old price 62.00 €
In stock

New Zebra connectors for HP41C repair

Product no.: zebra pair

This piece is for repair of HP41c full nut calculator, substituting the damaged or corroded zebra connector that links the main board with the processor circuit. Pair

6.00 *
In stock

Battery holder 3D

Product no.: Battery holder 3D

Battery holder case for the HP41 family of calculators, made with 3D printing and springs in stainless steel 304 alloy

35.00 *
In stock

New HP41c Port cover - 3D

Product no.: Port cover 3D

HP41c back port cover - 3D, new - set of 4.

30.00 / 4 piece(s) *
In stock

HP41c battery holder spring

Product no.: Spring

Stainless steel 304 springs for HP41C battery holder

3.00 *
In stock

New HP41c Port cover - original

Product no.: Port cover

HP41c back port cover - original and used.

15.00 *
In stock

New zebra connector holder

Product no.: zebraholder

Zebra Holder to keep the elastomeric zebra connectors in the contacts between main board and processor circuit in the HP41c calculator family, full nut versions.

12.00 *
In stock

Piece for repair of back case of HP41C

Product no.: brokenback

1 Piece for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

 

14.00 *
In stock

New HP41c side cover

Product no.: Side Cover

HP41c side cover.

8.00 *
In stock

New Repair kit for HP-41c battery bay and expansion ports

Product no.: Flex-PCB

Adhesive circuit for the often damaged flexible PCB in the battery bay (and I/O ports) of the HP-41c range of calculators. Shipping included in price.

30.00 *
In stock

Repaired HP41c back side

Product no.: HP41Cback

Repaired back side of HP41c. It can be used in case the original backside has the screw supports broken.

40.00 *
In stock

HP41C/CV/CX repair

Product no.: 41cRepair
50.00 *

4 x Piece for repair of back case of HP41C

Product no.: brokenback4

4 pieces for repairing HP41c back cases.

This piece is for repair of HP41c back halves, specifically the support of the upper screw heads that is often damaged, and very difficult to repair in a lasting way.

 

50.00 *
Old price 72.00 €
In stock

X-Functions module for HP41c/cv - USED

Product no.: HP 5061-5256 - USED
50.00 *

HP41c Printer

Product no.: HP 82143a

The HP 82143A is a thermal printer that was connected to a slot of the HP-41 series calculators. This printer was introduced with the first hp 41c. At the time, it was the first calculator that could use an external printer - in the line of endless expandability.

This unit works flawlessly and comes with a nearly complete paper roll and a new one.

140.00 *
In stock

HP Charger

Product no.: HP Charger

HP Original charger in excellent shape, valid for HP41c, HP67, HP92, HP97, and printers HP82162A (HP-IL) and HP82143A

English 40.00 *

Thermal Paper for HP Printer - single roll

Product no.: HP-82175

Thermal Paper for HP calculator printers: (HP 82240a & b, HP-92 & HP-97, 82143a & HP-IL printer) single roll

2.00 *

X-Memory module for HP41c/cv - USED

Product no.: HP XMemory

Extended Memory for HP41c, HP41cv and HP41cx calculators 

50.00 *

Battery holder

Product no.: Battery holder

Battery holder case for the HP41 family of calculators

60.50 *
In stock

Memory module for HP41c - USED

Product no.: HP Memory

Memory for HP41c calculators (64 registers)

15.00 *
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1 - 30 of 46 results

HP 41C Repair

HP 41C Repair

HP41c Repair