| 摘要 |
A raster type display apparatus includes interlaced even-and-odd frames. A digital memory of a computer stores line segment data in locations which are sequentially read out to form a line segment display with overlapping line segments. An off-scale detector prevents a line segment directly between the data points and creates a pair of line segments at the top and bottom of the display screen. An extended line from a break point in a curve to screen bottom is also prevented. Resettable registers monitor the carrier bits of digital multiplier and adder and are connected by an even-odd detector to actuate an exclusive "OR" gate to complement the output and generate the appropriate split display.
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