| 摘要 |
A slew length timer generates a variable time delay to signal the end of slew to a display symbol generator. Two memories, one for each deflection channel, are addressed by the starting and ending beam positions in a corresponding channel and programmed to provide coded output signals representative of the delay for that channel. A third memory receives the output signals from the two prior memories as its address and provides a binary count of the longer of the two delays specified by the first two memories. This binary count is coupled through the control terminals of a variable delay which provides an end of slew signal in accordance therewith.
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