| 摘要 |
A data acquisition device for recording information supplied by an operator in response to a plurality of questions visually presented to the operator in a predetermined sequence has a slide projector and mirror system for visually displaying a sequence of slides on a screen readily observable by the operator. Each slide bears an image frame having a question, multiple-choice answers, and an identification code photographically recorded thereon. The operator selects and actuates a switch corresponding to the desired answer and the device automatically records information corresponding to the answer on a punch card at the location or column on the card associated with the particular frame being projected. Digital logic is utilized to compare the identification code with the card column to synchronize the visual display with the punch card recording of the answers, as well as to provide safety features which render the operation of the device relatively foolproof.
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