| 摘要 |
<p>6407 A photographic exposure control system wherein a scanning shutter blade mechanism is driven by a reversible stepper motor operating under the control of a microcomputer. In response to one or more inputs indicative of photographic conditions, the microcomputer utilizes preprogrammed data to develop an appropriate correlated program of stepper motor drive signals, The system may be configured for either open loop or closed loop operation.</p> |
