Classic Calculators

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

Black Friday: 20% off

Battery cover for HP12C (for 3 LR44 battery original model)

Original HP17bII calculator. Excellent state. Original cover. Works with both Algebraic and RPN

Original HP17bII calculator. Excellent state. Original cover. Includes English manual. Works with both Algebraic and RPN

Rare BLACK colour - see pictures compared with the normal one

The HP-18C was HP's first RPL-based calculator even though this model was not user programmable. The user did have a solver (another HP first) available, and is very similar to the HP19BII, but missing RPN logic.

This calculator was the intermediate step between the current HP 17bII and the old, Pioneer-style HP 17bII. Main differences with the original are increased memory (up to 28 kb), and the currency exchange menu. There is as well the "key feel": while both have good tactile feedback and never miss a key, some called "hollow" the keyboard touch of the 17bII+

The calculator is in perfect shape, with some dust specs in the screen (already there when I bought it). However, the pouch is a little bit "battered" - see enclosed pictures.

HP Surveying module - tested with manual

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.

Black Friday: 25% off

Memory for HP41c calculators (64 registers)

The HP-12C is HP's longest and best-selling product, in continual production since its introduction in 1981. Due to its simple operation for key financial calculations, the calculator long ago became the de facto standard among financial professionals – for example, most investment banks issue HP-12Cs to the members of each incoming class of its investment banking analysts and associates.

This unit is USED and it is in good condition