Calculator having a modular keyboard

Details Calculator having a modular keyboard Calculator having a modular keyboard

1979-05-18

1982-06-01

Krass, Errol A.

Boots, shoes, and leggings

340365R, 364709, G06F 100

Patent

active

043331556

ABSTRACT:
A calculator having a keyboard alterable by interchanging various keyboard modules is provided by an arrangement wherein a module is insertable into a floating connector which adjusts the space allowed for the module to the size of the module and which provides reliable electrical connection to a main keyboard. Each module is insertable and removable with one hand by providing a resilient camming member attached to the calculator, which mechanically interacts with a locking and releasing member which is connected to the module and is accessible when the calculator is resting on a desk.

REFERENCES:
patent: 3394368 (1968-07-01), Carr et al.
patent: 3839630 (1974-10-01), Olander, Jr. et al.
patent: 3978328 (1976-08-01), Fabry et al.
patent: 4092527 (1978-05-01), Luecke
patent: 4181966 (1980-01-01), Wenninger et al.

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