VARIABLE CHARACTER SIZE USING A DOT PRINTER

    公开(公告)号:CA1044074A

    公开(公告)日:1978-12-12

    申请号:CA227666

    申请日:1975-05-23

    Applicant: IBM

    Abstract: PRINTING MECHANISM A printer of the wire type including 8 print wires disposed in a row and each actuatable by an electromagnet for printing individual characters defined by 8 dots high and 7 dots wide on a longitudinally movable ticket medium. The printing mechanism is also capable of printing fractions including numerators defined by the top 6 print wires and denominators defined by the bottom 6 wires together with a diagonally extending slash mark the printed dots of which lie within the 7 dot wide character areas and a 3 dots wide normally blank area between characters. The printing mechanism may be so controlled either by a hardware embodiment of control or a micro controller.

    RECONFIGURABLE CLUSTER OF DATA-ENTRY TERMINALS

    公开(公告)号:CA1120563A

    公开(公告)日:1982-03-23

    申请号:CA336937

    申请日:1979-10-03

    Applicant: IBM

    Abstract: RECONFIGURABLE CLUSTER OF DATA-ENTRY TERMINALS A reconfigurable cluster system of data-entry terminals includes a plurality of physically separate data-entry terminals coupled to a communications link in a cluster. Each of the terminals includes a programmable digital processor for transferring data and programs over the communications link. Each of the terminals further includes entry devices for communicating information between an operator and the programmable processor. At least two of the terminals are media terminals further including a storage for containing both data from the terminals and programs for all of the terminals in the cluster. Selection circuitry is provided to designate any one of the media terminals as a primary media terminal, such that all other terminals in the cluster, including others of the media terminals, exchange both data and programs with the primary media terminal. The selection circuitry is operable to designate different ones of the media terminals as the primary media terminal without the requirement of any physical reconfiguration of the cluster of terminals. RO978028

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