The standard in scientific calculators. The line starting on the hp 35 - hp 65 - hp 67 - hp 41c - hp 15c - hp 35s is the workhorse of the scientific and engineering profession since 1973. RPN programming and key entering makes them extremely fast to use when compared with algebraic entry, and just 15' with it will spoil you for life.

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Complete HP41CL

HP41CL with the latest version of Systemyde circuit


769.00 *

HP 35s Scientific Calculator

Get professional performance from the ultimate RPN scientific programmable calculator. Switch between RPN1 and algebraic entry-system logic at any time. The HP 35s features a two-line display, and the powerful HP Solve2 application.

54.90 *

New HP300s+

Product no.: NW277AA

The new HP scientific calculator, with advanced features like simultaneous equations, GCF/LCM, advanced statistics with easy tabular data entry, and up to 315 different functions


25.00 *

New HP10s+

Product no.: NW276AA

User-friendly design, easy-to-read display and a wide range of algebraic, trigonometric, probability and statistics functions for your Math and Science classes


20.00 *

HP41CL Install

Product no.: HP41CL Instalación

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

English 540.00 *
In stock

Assembled HP-41c battery bay and expansion ports module Flat

Product no.: Flex-PCB AssembledFlat

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.

This is the FLAT version, when the screw head domes are broken and grinded down - see pictures.

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

55.00 *
In stock
* Prices include VAT