Zygo Tetrascan Ii
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DISCONTINUED. (Verified 1/94) RETAINED IN DATABASE FOR REFERENCE. Zygo TETRAscan II is an alternate computer keyboard that uses scanning. Each selection area represents a key on a computer keyboard. The user may make selections by a row-and-column scanning method (single switch), or by directed scanning (multiple switches). Speed and timing of scanning are adjustable. The device's 4K of user-programmable memory allows the user to program information into 156 locations so that selection of a single message area sends a combination of characters to the computer. Audible feedback is provided for each "key" activation. The cost of TETRAscan depends upon the type of computer interface desired. Some of the connectors include a 7-pin DIN jack for multi- switch, a mini-phone plug for single switch, or two 16-pin flat ribbon connectors for the computer. Complete standard keyboard key selections are available for all computers for which interfaces are available. COMPATIBILITY: For use on Apple II+, Apple IIe, Commodore 64, and IBM PC computers.