| 摘要 |
<p>A VDU line marker enables a specific line on a Visual Display Unit to be quickly and accurately located, similar to using a straight edge and/or a marker pen on paper. The line may be scrolled over the displayed information or the displayed information may be scrolled with the line stationary. The VDU electronic line marker (1, 22) is coupled between a Visual Display Unit (23) and a computer/terminal (24, 25) combination and works independently of the software. It offers a choice of line colours (7, 8, 9), line thickness (5) and precise line position without using costly memory, memory controls, software, menus or multi function use of keys and it derives its timing from the host computer.</p> |
