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Sup'R'Terminal
The M&R Enterprises Sup'R'Terminal was the first Apple II peripheral card to enable the display of 80 columns of text on a connected monitor. The Sup'R'Terminal is compatible with slot 03 in the Apple II and II+. As the first card making 80 columns of upper and lower case text displayable on these machines, it is the only card supported by the II+ version of Apple Writer and thus the only way to see on a monitor the true layout of text as it will be printed on a page with this popular early personal computer word processor.〔(【引用サイトリンク】 A2 Peripheral Cards )〕 The Apple II and II+ had until this time only displayed 40 columns of text per line, half the characters included per line on a printed page. This transition to 80-column display was an early step in bringing the WYSIWYG concept to the Apple ecosystem.
A variety of clone add-on cards with similar functionality were released in the wake of the Sup'R'Terminal, including the Videx Videoterm. Apple's inclusion of their own first party clone of the Sup'R'Terminal, the Apple 80-Column Text Card, with the Apple IIe nearly eliminated the third party market 80-column card market.〔 The Sup'R'Terminal was designed by John R. Wilbur and the firmware was written by Andy Hertzfeld in 1980.〔M&R Enterprises, Sup'R'Terminal Manual, page 47, 1980.〕〔"Video Compensation Subcircuit," US Patent 4314245, March 10th, 1980.〕
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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