Hand held pen-size calculator

Details Hand held pen-size calculator Hand held pen-size calculator

1978-12-27

1980-12-23

Malzahn, David H.

Boots, shoes, and leggings

34014635Y, G06F 3033

Patent

active

042414091

ABSTRACT:
A hand-held pen size calculator having a resiliently mounted writing head for entering data as they are being written on a writing surface and a character transducer arranged for detecting the axial motion of the writing head and the pivotal movement of the calculator in two opposite senses as the data is being written. The apparatus permits storage of characters as written by the user.

REFERENCES:
patent: 3835453 (1974-09-01), Narayanan
patent: 3937939 (1976-02-01), Frenkel
patent: 4007364 (1977-02-01), Ojima et al.
patent: 4029915 (1977-06-01), Ojima
patent: 4070649 (1978-01-01), Wright, Jr. et al.
patent: 4128889 (1978-12-01), Ojima et al.
patent: 4139837 (1979-02-01), Liljenwall et al.
Crane et al.,"An On-Line Data Entry System for Hand-Printed Characters", Computer, Mar. 1977, pp. 43-50.

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