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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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New Zebra connector for HP41C repair

Product no.: Zebra PCB

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. New design.

20.00 *
In stock

Assembled HP-41c battery bay and expansion ports module

Product no.: Flex-PCB Assembled

Assembled module 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.

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

55.00 *
In stock

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.

3.00 / 4 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

Complete HP41CL

HP41CL with the latest version of Systemyde circuit

 

720.00 *
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. Comes with all port covers (the side cover is The Calculator Store's 3D printed part). Comes with no case

155.00 *

HP 41C Scientific Calculator - 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. 

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

140.00 *

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

60.00 *
Old price 70.00 €
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 *

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.

26.00 *
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 *
In stock

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

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

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 

55.00 *

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 *
In stock

User Manual for HP41c/cv - English

Product no.: Manual HP41c

25.00 *

HP41CL Install

Product no.: HP41CL Instalación

Installation and set up of HP41CL module in your HP41C, CV or CX

540.00 *
In stock

HP82104A Card Reader

Product no.: Card reader

HP82104A Card Reader for HP41c family

90.00 *

Quad Memory module for HP41c - USED

Product no.: HP Quad Memory

Quad Memory for HP41c calculators (256 registers)

35.00 *
In stock

Full-nut processor

Full-nut processor - please select C or CV type, or installation in your machine

25.00 *

HP 41CV Scientific Calculator - USED

Product no.: HP41cv - 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.

 

116.00 *
Old price 145.00 €

New Lower Post Repair part

Product no.: Lowpostrepair

Piece to repair HP41c full nut series lower screw posts

25.00 *
In stock

Keyboard support for repairs

Product no.: keyboard support

Piece required for the lower post repair of HP41c calculators.

25.00 *
In stock

New Upper Post Repair part

Product no.: UpperPostRepair

Piece to repair HP41c series upper screw posts (tested with both fullnut and halfnut versions)

25.00 *
Still in stock

Navigation Pac for HP41c - USED

Product no.: HP Navigation Pac

Navigation Pac for HP41c calculators 

45.00 *

Math Module

Product no.: MathPac

Math Module for HP41c

45.00 *
In stock

Financial Pac for HP41c - USED

Product no.: HP Financial Pac

Financial Pac for HP41c calculators 

50.00 *
In stock

Navigation Pac for HP41c - USED

Product no.: HP Stat pac

Navigation Pac for HP41c calculators 

50.00 *
In stock

Stat 1 module

Product no.: Stat
45.00 *

Stat Module

Product no.: Stat module

Stat Module

45.00 *
In stock

3 different Math modules

Product no.: Pac of MathPac

Collectors Math Pac: all three different Math Pac versions!

110.00 *
In stock

Feet for HP41c HP41cv HP41cx calculators - set of 4

Product no.: feet41c

Adhesive black silicone feet for HP41c HP41cv HP41cx calculators

4.00 / 4 piece(s) *
In stock
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1 - 45 of 50 results

HP 41C Repair

HP 41C Repair

HP41c Repair