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热词
    • 10. 发明公开
    • A data processing system input device
    • 数据处理系统输入设备
    • EP0361533A3
    • 1990-09-05
    • EP89119543.0
    • 1989-10-20
    • Kaiser, Thomas, Dr.
    • Kaiser, Thomas, Dr.
    • H03M11/00B41J5/10G06F3/023
    • B41J5/10H03M11/02
    • An input device for a data processing system, such as a computer or a word processor, consists of a keyboard and an associated electronic circuitry. The keyboard consists of a left and a right array of keys mechnically separated from each other and therefore arbitrarily positionable relative to each other. The keys (60-63) are couplable to coding units generating the code signals necessary for the control of a data processing facility connected to the keyboard. The two arrays of keys, both essentially of the same size, contain all the keys necessary for the input of data into the data processing facility and for the control of certain functions including a cursor. In addition to the usual switching device (83) for the choice of capital and small letters and the like, there is an additional switching device (84) so that a number of keys (60-63) can be coupled alternatively to three or four different coding units (70-73). The electronic circuitry includes the switching devices (83,84) and coding unit arrangement which in turn contain the coding units (70-73). Each switching device contains logical gates and a bistable circuit for latching the chosen relection of the coding units.