Hewlett-Packard scientific programmable calculator HP-41C & pouch/papers in box

Hewlett-Packard scientific programmable calculator HP-41C with pouch & papers in box in excellent cosmetic and working condition

Selling my own collection acquired for decades, only made of perfectly working calculators and in excellent cosmetic condition.

Have a look to my other HP calculators and items coming for sale!

History

“Around the time of the HP-67, an article in the Hewlett-Packard Journal, stated that electronic technology was no longer the only limitation of pocket calculator progress. The human interface was becoming an even greater barrier to adding more functionality. The HP-67 was an excellent example of the problem. It had three shift keys and most of its other keys had four functions. HP was running out of keyboard space for new functions, and many users found it difficult write and use numeric-only programs.

The HP-41C overcame these limitations by adding alphanumeric capabilities to both the display and keyboard. The keyboard had an "Alpha" key that toggled the keyboard between alpha and the normal calculator mode. (The alpha characters were printed on the slanted faces of the keys.) If the user needed a function not printed on a key, the name of the function could be typed in and executed. (About half of the HP-41Cs functions were preassigned to keys.)

Because typing out the name of a function could be cumbersome, the HP-41C added another toggle key called "user". The user could assign any built-in function or user program to any key. Once the keyboard was placed in user mode, any assignments made by the user overrode the label on the key. (With the gold shift key, this allowed two user functions per key.) The user toggle state remained set even when the calculator was turned off allowing true keyboard customization.

To make it easy to remember keyboard assignments, HP provided keyboard overlays along with preprinted labels for all built-in functions and blank labels for user functions. In addition, whenever a key was held down, its function name was displayed. If it was the wrong key, the user could continue to hold it until the display showed "NULL" when meant the function was canceled.

Of course, HP didn't just improve the human interface. The HP-41C had more memory (now non-volatile) than its predecessor, more functions, improved programming, and could be expanded with both RAM and ROM modules.

Four ports at the top end of the machine allowed the user to plug in 4 more RAM modules which would increase the maximum register space to 319 or allow 1000-2000 lines of program space. (Or any compromise between those.) Later, the entire register space could be provided via a single "Quad Memory" module and Extended Memory was added to allow even more space.

Because the HP-41C had continuous memory and because its application pacs came on ROM modules, a card reader was omitted. However, one could be plugged into the top end. (In less time than it takes to read this sentence.) The HP-41C was obviously not code compatible HP-67, however, a sophisticated translator was built into the card reader which translated programs to HP-41C code on the fly.

By plugging in an HP-IL module, the HP-41C could be connected to multiple devices simultaneously. This allowed it to control and communicate with lab devices, tape drives, printers, other computers etc.”

Specifications

·                Model                                                   HP-41C,

·                Code name                                           Coconut,

·                Variation

§  Full nut

§  Tall keys

§  Silver keyboard frame

§  Manual overlays maintaining system

§  Yellow alphanumeric guide on back

§  With balls contacts in side tunnel (see picture)

·                Introduction price                                      $295,

·                Made in                                  America in 1980,

·                Serial number                               2003A01100.

This model is an early one, the famous full nut “tall keys” with the early ball’s contacts within the side tunnel. It also has the manual overlays maintaining system, we have to push the trigger to lock the overlay, it does not come back automatically when we pull it.

It has a story, in fact, it is my personal calculator that my father bought for me in Dayton, Ohio and I got bachelor with it (nobody at this time knew that you could solve integral, functions and equations with it and even if you do not have the detail of demonstration, you could at least check the result and it was peaceful for your mind!)

For that reason, I am providing it in its box with a complete package, even labels where, sorry, I took some of them! I will also add a little gift at the end of the auction to the package. Surprise!

Condition

The HP-41C presented in this auction is of course in excellent cosmetic and working condition. I tested the working condition with 4 LR1 1.5v alkaline batteries and 4 LR1 Ni-Mh 1.2v rechargeable batteries and I loaded and run a program from the HP 82104A card reader object of another auction (the Matrix program of magnetic cards wallet object of a previous auction to be precise).

Ö               Rubber feet in perfect condition,

Ö               side tunnel door in perfect condition (usually clips could break due to the battery door insertion, it is a conception issue),

Ö               port covers and port contacts in perfect condition,

Ö               battery terminals are corrosion free,

Ö               no repeating or sticky key,

Ö               no missing or not working display segment,

Ö               alphanumeric back label in perfect condition,

Ö               model designation plate in perfect condition,

Ö               the HP-41C Standard Applications book is in fair condition as it has been perforated to fit in a binder.

What is included

Ö               The original box HP Carton # 9211-2964.

Ö               The HP-41C calculator in excellent cosmetic and working condition.

Ö               The original HP-41C calculator pouch with a perfectly working zip in excellent condition.

Ö               The battery compartment/door where you can place 4 LR1 batteries.

Ö               3 original port covers.

Ö               1 original HP 82106A Memory Module to replace the missing original port cover giving you 64 additional registers.

Ö               The original side door closing the tunnel where a battery charger can be inserted when we use a HP 82120A battery pack.

Ö               The original Owner’s Handbook and Programming Guide for HP-41C (part number 00041-90001 Rev. B 8/79) in excellent condition with no page torn nor engraving.

Ö               The original HP-41C Owner’s Handbook and Programming Guide Addendum part number 00041-90220 printed in U.S.A. in November 1979 in excellent condition.

Ö               The original HP-41C Quick Reference Guide (part number 00041-90002 printed in U.S.A. in 1/79) in excellent condition.

Ö               The original HP-41C Standard Applications book part number 00041-90018 Rev. D printed in U.S.A. in August 1980 in fair condition.

Ö               The original warranty envelope part number 00041-90272 printed in U.S.A. in excellent condition.

Ö               The original HP-41C Software & Accessories order card part number 5955-3096 printed in U.S.A. in excellent condition.

Ö               The original Users’ Library Subscription Form part number 00041-90046 Rev. B 9/79 printed in U.S.A. in excellent condition.

Ö               The original HP-41C System Service Card / Service Information part number 00041-90077 Rev. B 8-79 printed in U.S.A. in excellent condition.

Ö               The original Series 40 Software & Accessories Card part number 5955-3096 Rev. D printed in U.S.A. in excellent condition.

Ö               Two original labels sheets where I picked some of them to personalize overlays nevertheless in excellent condition.

Ö               The original modules booklet where you can store 3 modules and overlays in excellent condition.

Ö               Two original overlays, one blank and one standard to fit on the HP-41C keyboard in excellent condition.

IT IS A COLLECTOR ITEM needing a good home and a showcase, due to its age, I would recommend not using it on a day-to-day basis to preserve it from the years.

Auction terms

Please bid only if:

§  You are really interested in the items proposed,

§  your feedback is at least 50,

§  you are able to complete the transaction according to the following Communication , Payment , Shipping & Handling and Warranty terms.

In all other cases, please contact me before bidding to receive my approval.

Communication

I just want people receiving my collectibles enjoy them the same way I enjoyed collecting them; for that reason, I am considering that we have a communication obligation to each other during all the transaction process.

Payment

Only Paypal or bank transfer accepted, no exceptions.

Payment is expected within 24h after the end of the auction. If you are not able to pay within this delay, at least, send me a message in order we decide how to proceed.

Shipping & Handling

Combined shipping is organized within 48h after the end of the auction to France, European Union & worldwide. Contact me if you want to delay the shipping or if shipping cost for your country is not mentioned in auction.

Colissimo & Mondial Relay preferred. Shipping cost is adjusted as soon as the parcel is on the way considering carrier, option and packaging retained.

Ø   For Mondial Relay, do not forget to mention your phone number in your contact details as it is required for parcel follow-up.

Warranty

I guarantee the items of the current auction to be in the condition as described; however, due to the age of the item, I cannot provide any warranty terms.

Items will be sold AS IS, all sales are final, no return and no refund.