Registers – Keyboards – Auxiliary
Patent
1977-05-09
1979-06-12
Tomsky, Stephen J.
Registers
Keyboards
Auxiliary
235145R, 400473, G06C 702, G06C 2500
Patent
active
041581300
ABSTRACT:
A low cost, self locating auxiliary keyboard assembly is disclosed for changing the key configuration and classification of the keyboard of a data terminal device, the assembly including a cover member having a plurality of apertures which overlie associated control keys on the keyboard of the data terminal device. A classification indicia card having a plurality of predetermined positioned apertures is placed on the cover member, the apertures in the indicia card overlying certain of the apertures in the cover member to allow a removable auxiliary key member to be inserted within the aligned apertures of both the indicia card and the cover member to engage the top portion of the associated control key on the keyboard of the data terminal device for operation thereby. Removing the auxiliary key members from the cover member allows other indicia cards to be located on the cover member thereby changing the configuration and classification of the keys of the keyboard allowing the keyboard to operate in different functional modes. Means are provided in the cover member which cooperate with the control keys on the keyboard to orientate and hold the cover member on the keyboard of the data terminal device.
REFERENCES:
patent: 3797630 (1974-03-01), Zilkha
patent: 4020328 (1977-04-01), Bradam
patent: 4030094 (1977-06-01), Anderson
Hittinger Paul L.
Sestina Michael B.
Speraw Floyd G.
Cavender J. T.
Hawk Jr. Wilbert
Lavin Richard W.
NCR Corporation
Tomsky Stephen J.
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