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A HP12c's innards
A comparison between the latest HP12c and the upcoming HP12c
File away these solder peaks!
Glue for HP41 repairs
HP10bII+ and newest HP12c "on its way"
HP10c for repair!
HP15c Manuals
Happy new 2023
Valentín Albillo's Articles
Valentin Albillo's new site
CAS!!
Games for the HP Prime
HP4c feet for free on orders >40€
More places to find Prime software
2 HP41cL on offer
More pictures of the new zebra prototype
HP50g Blue no more!
The problem with ordering bulk in China
Offers for Black Friday - 2
Assembled flex and standalone flex circuits back in stock
New Prime firmware coming!
Last HP12c Anniversary and HP15c Limited Edition!
Now on sales - the zebra replacement!
Interesting video about HP graphical calculators
to do list
The calculator as a gift 2
NPV and IRR on the HP Prime
My HP calculator history (I)
RPN Spreadsheet behaviour
wp34s - part 1
more info about the HP41CL
Zebra connectors for HP
Printer paper for HP calculator printers
Tomcat battery prototype
Yet another method for Pi - this time from the outside!
News
Repair your calculator during the lock down!
Four new products
Some more pictures of the other colors for Voyager cases
HP54201D mixed signal oscilloscope available again
Available HP41CL units - and time modules!
Some challenges with the new firmware
Wsih list for Moravia-Royal
Register Arithmetic on the 12c
How I have configured my HP 15c for financial duties
HP42s
First appearance on print of TheCalculatorStore
Last HP41CL units!
Stay tuned for our next offering
New items in the HP41c corner
Even more memory in a HP15c LE?
A HP 54201D oscilloscope
Prime - news
New HP41c repair kits!
The HP48SX
HP15c LE emulator
The HP82240B Infrared Printer
Another gift idea: the HP85A
Clarification on HP41CL pricing
The mighty HP42s
More on the HP97 - 2 for sale
The new HP41c from Swissmicro
tips on using the HP41c repair kit
HP15c Limited Edition arrived
Card reader repair for HP41c
A nice collection of HP12c in the web
HP infrared printer module
HP Prime settings storing and retrieving
corroded connections
HP17bII+ - more...
How to create your own HP41CL
Error in book corrected
HP 8591E Spectrum Analyzer
Why using a handheld calculator nowadays - part I
Manual for Battery-port assembly
The HP Prime
HHP Eprom programmer in card reader case
More about the HP17bII
New version of wp34s: 3.3
HP 17bII+ vs HP19bII
An attractive moment for calculator lovers
HP15c Warranty repairs
Spice battery cover
Offers on HP Prime old models elsewhere
Two old leather cases for HP calculators - they even had a part number!
Base formulae project
Some speed tests comparing old and new HP 15 LE
New low post part
16 € reduction in the HP50g Blue
How to replace a HP41c screen
Higher 3D printing prices
New Product: 4 x back case repair piece!
HP17bII+
more pictures of the leather case for the HP Pioneer series.
Updating your HP 41CL
Two more HP41CL assembled
How to really learn more about the Prime
The HP Prime Finance app
Classic AAA charger
ROM upgrade for the HP39GII
HP Prime, BCD and binary
Now TheCalculatorStore is visible on your smartphone
Buying calculators in internet sites
HP Prime
The beauty of RPN
Selling in Pounds!
Absolute beginners' guide to the HP Prime
More on Equations for the HP Prime
You can now order the Battery-ports assembly!
Astronomy for HP Calculators
My configuration for the HP41CL
HP41CL back in!
HP Prime Firmware Update
True leather cases?
Prime
500 messages!
HP12c
Statistical Distributions in HP Prime
Horses for Courses
New products in development - part 1
Repair service for HP41C
Repair kits back in stock
A new repair method being tested for lower post of HP41c
More speed comparisons for the different versions of HP17bII
Some interesting links for HP Prime
A method to calculate pi based on Pythagoras theorem
5 dias para el final de la oferta
New Fourier Probe list.
Time module on sale
Comments on HP41c battery repair kit
HP15c
HP Financial calculators
New HP41CLs available
Working with hours, min and seconds in HP Prime
New zebra development!
RPN calculator for Macs
HP Prime -planet orbits
HP 50g vs HP Prime (I)
Black HP17bII
More about the leather case for voyagers
HP41c types of repair
New website logo!
HP calculator repair
HP official emulators
The HP10bII+ - a different animal from previous models
Rechargeable batteries for HP41
Collector's Pack
HP41c upper post repair
Calculator repair - spare parts
Fourier Probes
Classic AAA charger - prototype 2
More on the HP 12c Platinum
The HP41c repair kit is back!
hp41 battery repair pack
An offer on the HP39gII
New HP41CV units!
HP16c compatibility module for HP41C-CL
Some things I did not know about the Spice battery holder
HP instruments coming
A comprehensive HP literature site!
HP54501a repaired
A HP15c reissue - but not the real deal
stop new firmware install!
HP Prime's wireless kit
Types of current HP12c
The life goes on...
News on HP Prime equipment
A HP17bII-type solver for the HP50g
A comparison between HP 17bII, HP 17bII+ gold and HP 17bII+ silver
More information on the HP54501a oscilloscope
New HP Models
RPN and the HP19bII
HP and the educational market
A tip on the HP15c official emulator
Two new old HP19bII
Prime Firmware Comments
HP15c and HP41CL
More about the Multi-Language software for the HP50g
Customizing the HP Prime
Some more blue HP50g
Mac Prime Emulator
hp 19bII - back battery door
HP15c finally arrived to our warehouse
HP Repair book
A penny for your thoughts
Different keyboards in new HP12c
Official Emulator for the HP39GII
HP Prime information sources
If you always envied the young look of your colleague's Casios and Texas...
Prime Emulator
HP15c clone coming back - but now with a competitive advantage!
3D side cover
The HP41c repair kit stock finished in 4 hours
Woodstock battery bay
More news about the site
Leather cases for most significant calculators
Programming the HP41CL - some comments.
Just received the HP67 !!!
PPC ROM Module
Prime new firmware (II)
Battery bay for classic calculators
Card reader side locks prototypes
Some news on HP calculators
HP1CL is over!
Court success HP15c
Customizing the HP Prime for Business use (II)
new firmware 8151 for HP Prime
The Psion Series 5 - part 1
Tall keys, low serial number HP41CL
HP15c book
HP original Thermal Printer paper
Measure conversion facility for the HP-41CL
New HP-PRIME G2/B1S (2AP18AA)
New articles for this Christmas tree
Facelift!
One more HP15c
HP45 Easter Egg
HP 41c battery bay repair kit
The HP39GII is coming!
EOL HP300s+ !!
New Product: True leather Pioneer case
New video tutorials for HP50g, HP12c
More comments on the HP Prime
Our sister site
And Finally...there are here !!!
New HP50g vs Classic 15c
HP official news about Prime!
New Prime
Battery adaptors for other calculators
A new time module on sale in a few days
new zebra PCB
Monthly closing with the HP17bII - some comments
Buying used calculators - sad stories 1
Prime: some pictures off an emulator
The HP30b
HP12c is back II
New tall keys HP41c arrived, to be converted into HP41CL!
The HP12c Anniversary is now in stock !!
Register arithmetic on the HP15c
Adventures with the HP41CL and the %T function..
The HP41CL - our first conversion
The HP50g as a financial tool (II)
The future of HP Calculators
New modules for HP41CL and some changes
New products and some coming back!
Scientific Calc's Collector's Pack
Battery bay repair piece
tricks for units use in HP Prime
Ran out of HP41CV
Further pictures of the backside repair pieces
HP17bII+
Zebra may go alone
HP Prime versions and Streamsmart 410
Current projects
An important advice concerning Streamsmart 410 and Fourier Probes
Offer HP Prime and other calcs
The TVM formula
New Prime Firmware beta!
HP's own website for the HP Prime
A new product may be coming...
Screen tab menus on the HP Prime
Two new HP 41CL alive!
Number theory and HP Prime
Available Fourier Probes
HP12c Anniversary - European shipment
SmartStream 410 and HP Prime training program
Three new products in the making
Differences between Prime revision A and C
News from Moravia
Classic charger
Old HP calculators and programming quality
HP82104A Card reader repair
HP32sII
Which calculator to take with you on a 2 weeks' holiday?
HP Prime loading program procedure
How I have configured my HP15c for financial duties (III)
second attempt to card reader side lock
Card reader available!
Restoring your HP65
The Prime for solving problems at school - one example close to me
HP 41CL - offer
How to promote Prime (and not only in the school)
Calculators for the Iphone 5
Continuation on new repair aid piece
Different behavior between different number formats in RPN mode in Home
Different colors for the Voyager true leather cases
The HP 41CL Calculator
Battery module for broken calculator backs
Buying second hand
HP50g appreciation
HP15c Limited Edition manual
Use this java emulator...
HP35s Appreciation
Bode plotting app for HP Prime
Just received my first 30b - first impressions
HP41CL and time module
A couple of speed tests and some more comments on the new HP12c
Corrosion on battery contacts
Ownership Pride and Hewlett Packard calculators
HP 41CL Appreciation
Tetris in the HP50g
Possibility of a new product - query to customers
Customizing your Prime for business use (I)
More comments on the HP12c keyboards
HP 300s+ has arrived
HP50g for finance - an engineer lost in a world of hp12cs!
A boxed HP41CL and the HP19bII collectors' set
Base formulae project (3)
Zebras for the HP41c
The new HP10bII+ has arrived!
A new Zebra batch has arrived
A lot of HP17bII+
A new solution for broken back sides of HP41c
Testing card reader side locks
New units coming in
New firmware for the HP Prime
An early HP41C converted to CL
latest HP15c LE vs. HP41CL
Ideas for a HP41c module
HP12c versions
HP41cl no more...
Comments on HP41CL troubleshooting
Final post on statistical distributions on HP Prime
More Fourier Probes for the HP Prime
Where is the sun in the Lofoten Island? Ask your Prime
New springs for HP41c, Woodstock battery case
Prime firmware update 2
The HP12c Platinum
The HP view on education - some interesting aspects
Why have we started producing the Voyager leather cases? or look at HP's late cases disaster!
offers for Black Friday - 3
Finally got a HP27s!
Two units of HP15C - Limited Edition
Clamshell and Pioneer Repairs - first comments
Suggestions for a change in HP17bII+
A tip to use Prime in your business
More random number generator according to different statistical distributions for HP Prime
How I have configured my HP15c for financial duties (IV)
Testing HP41C with oscilloscope
First steps with Smartstream 410 and HP Prime
Ramblings about technical issues of scientific new calculators
A couple of HP97
HP15c book - II
Black Friday - day two: more offers
Calculator repair
The new HP39GII has arrived!!
HP41c case sponges
Back from Holidays
HP17bII as the best all around financial calculator
Transport costs and cash-back offer
Ineresting app for the HP Prime and more Prime software
The amazing HP17bII financial calculator - 1
More news on HP Calculators
Arrived more Spice battery holders
HP SmartCalc 300s review
The HP12c "Gold" is back !!!
Reprogramming a HP12c into an HP15c
HP-IB vintage Lab
Same for the new Sandmath 2x2
A method to calculate Pi using Pythagoras' theorem: one solution for HP41c
Card reader repair
More repair tips for HP calculators
More HP15c
Back to the office!
...And the same method for the HP Prime!
Success of new HP41c repair methods
Eddie Shore's blog - now video tutorials
Spaces for repair
Assigning percentage keys to the HP Prime
Black and Scholes for the different HP calculators
New batch of springs
3D Printing link
Time module in HP41CL
HP41c repairs!
CL circuits in!
Screws for Coconut calculators
The new Scientific Calculators from HP - part one
About the HPCC Journal
Screws for Coconut calculators
hp30b and wp34s - disappearing?
HP15CL battery bug
Currency Exchange for the HP41CL
More about the HP41 CL
Equation library program analyzed
RPN or not?
I found it!
·D printing HP 41c ports
HP17bII as the best all around financial calculator
Back from holidays...
Unknow module overlay
Repair kits back again!
New HP12c set
A trace mode "accountant type" for the HP 50g
HP Prime Firmware Update
Initialization HP41CL - and some problem solving
A half-nut "C" HP41 unit !
More videos on graphical calculators
More HP19bII
The hp Prime at school.
HP12c solver for polynomial expressions
HP Prime pro
New products
Comments on Prime's new firmware
Shipping included for Prime!
The WP 34s is back!
First contact with the HP12c
Date functions for the HP Prime
The calculator as a gift.
Calculators and the MoMA in New York
The HP19BII back door
HP Prime in secondary education
More units of HP41CL
HP12c Anniversary .
Return to the HP 17bII+
Repair of HP41c posts - some ideas
Tomcat battery prototype
Zebras for HP41c
Musings on headphones and earphones
Games for the HP Prime
HP41c Repair book
Repair kit is back
Some press reactions to the HP12c, HP15c reissues
Shady Calculator Stories
New design in for testing
HP 41C repair kit
3D printing - examples
New Firmware for the HP Prime - version 7820
Considerations on leather cases: the HP41c
Video Tutorials for Prime and 41CL
calculators for travel - some ideas
Repairing the rusting battery bay of HP41c.
News for HP41CL users
The new programming language Swift
wp34s - last donors
Playing with the HP Prime
HP39gII - collectible?
Valentín Albillo's programs ROM (1)
Convert HP15c in a financial calculator - in addition to be one of the best scientific there were!
Some tips on iPad
Clean your HP41c case!!!
HP 15c LE last production run.
WP34s
Sponge for HP41c case
New products coming
Any difficulties in upgrading HP Prime?
The Kinomi Project
HP Prime iOS app!!
HP15c
True leather case for the HP12c
The HP16c Emulator (I)
Just received more zebra circuits
Sandmath 4x4 fix for %T (same as for Sandmath 2x2 previously)
A hint for the HP 41CL
X-Functions and X-Memory
Navigation Pac
An eventful week
The new HP10s+
HP41cl, time module and battery pack
black HP17bII
My other passion
Financial calculators
An emulator for the new HP300s+
New upper and lower post pieces
Guarantee for HP calculators explained
How I have configured my HP15c for financial duties (II)
Interesting units arriving!!!
HP Prime: more information
HP Prime - equation systems basics
How to make your Prime programs not dependent of the HP Prime number settings
I have lost my HP 15c LE !
HP12c out of stock
Another HP Prime site
A repair solution for the back side of the HP41c family
New HP15c LE batch arrived
CHOOSE() menu function for HP Prime
Notice about StreamSmart 410 and HP50g
N.O.S. power supply for HP82240B
First leather case tests for HP12c calculators!!
Function library in the HP Prime - very similar to the HP50g's
The original HP15C: the best HP product ever?
Development priorities
Broken HP41c back repair manual with 3D piece
A couple of audio-related products
screw set for HP41c series
New flashing service
Battery adaptor for Spice series calculators (HP31E, HP32E, HP33R/C, HP34C, HP37E, HP38E/C)
More news on the HP15c...
HP41CL with Time Module
Several HP41cv and cx - Half nut!!
HP12c is back
The HP10bII
New product: 10nF capacitor for HP41c
New time functions in HP Prime
More tutorials for the HP Prime
At long, long last...The HP15c Limited Edition Arrives !!
Use of menus when programming the HP Prime
New Service - second hand equipment market
HP Prime (G8X92AA) available again
HP current scientific calculators
A new product for HP41c repair
The humble HP10bII+
HP Prime - Possibilities at school
A Time module to go with a HP41CL
New HP calculators: HP smartcalc 300s+ and HP10s+
Inverting a Matrix in HP Prime in RPN (basic!)
Why using a handheld calculator nowadays - part II
Statistical distributions for the HP Prime - 2
Classic charger substitution
Repairing calculators
Even more tips on repairing calculators
Charger
Repair in old HPs - things to avoid
Repairing HP old multimeters
Panamatik.de
Tutorials for HP15c
HP 54501a oscilloscope
New products in the web
How to treat your HP Calculator
New firmware for the HP Prime
Voyager cases - how the colors really look
A Casio in HP livery - the HP300s+
hp42s
More musings on the HP 41CL
Calcpad 200 discontinued in our web
Some news
HP vintage calculators prices in Europe
Offers for Black Friday - 1
Feet arrived!
3D Printing - not good enough!
HP85 memories
HP Guarantee
Base formulae project (2)
Changes in the battery assembly
Calculator repair - Adhesive conductive tape
New Prime, freezing and guarantee
A new watch - and an old one...
A brief description of the HP41CL
New HP41CL batch in production
The HP85 and my 7 year old
Equation library for the HP Prime
Battery pack for HP printers and HP92, HP97 machines
Testing repaired HP41C
New drop-in solution for port and battery connector
A new set of cables available.
HP12c vs HP17bII comparison? Maybe
3 more HP41cl circuits here!
HP41c models in our website
More about Prime
zebra utilization
First run of Voyager cases finished!
A rare, non HP, ultra-old calculator
Flex circuit installation for the HP41c calculators
New connectivity and virtual Prime calculator software!
HP Prime user keys
The DM-15cc HP15c clone arrived
Change in focus in reference to the HP41CL
Black Friday - day one: HP41cv and HP41cx at rock-bottom prices!
Yet another Easter egg in the HP50g
HP41CL
No HP15c for Christmas
Time functions for HP Prime
Good things coming next year!
HP41c Repair Spree !
The HP10bII+
HP 41c battery bay repair kit
Questions about the new pieces for repair
A curiosity on the Prime and a Time machine module
Broken back piece vs integrated "flat" assembly battery part
Goertz speaker cables
WP 34s just born
Calculator Gift ideas for Christmas
Feet for Coconuts and Voyagers
The HP 41CL is back!
HP Operating Environment limits - HP15c Limited Edition
Scratches in HP calculator screens
Start up a new blog

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