Portable data entry apparatus including plural selectable functi

Details Portable data entry apparatus including plural selectable functi Portable data entry apparatus including plural selectable functi

1979-02-15

1981-07-14

Zache, Raulfe B.

Boots, shoes, and leggings

340365VL, 364709, G06F 1506

Patent

active

042790212

ABSTRACT:
There is disclosed herein a data entry device designed for general use, and whose functional configuration may be readily changed to meet the specific needs of a number of different customers, each requiring a special assortment of operational features. The device (10) includes a housing (12) having a keyboard (14) including function control and data entry portions (18 and 20). In one embodiment, a plurality of different overlays (22) may be received over the function control portion of the keyboard. Each overlay carries an array of key labels (26), and is pliant enough to permit an underlying key to be actuated by depressing an appropriate key label. Tabs (30, 32, 34) projecting from the frame (24) carrying the overlay actuate switches (132, 134, 136) in the device to identify which overlay is carried by that frame. Other means of identifying the overlays to the data entry device are also shown. A different, permanent set of keys is provided for data entry in this embodiment. In another embodiment, an interchangeable mylar overlay (154) is also provided for the data entry portion of the keyboard. If the device includes a readout or display, the portion of the device (168) carrying legends for the display can also be changed with the overlay.

REFERENCES:
patent: 3839708 (1974-10-01), Bredesen et al.
patent: 3946220 (1976-03-01), Brobeck et al.
patent: 4092527 (1978-05-01), Luecke
patent: 4107784 (1978-08-01), Van Bemmelen

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