| 摘要 |
A print storage unit (PSU) for providing a visual read-out and a hard copy print-out of the contents of an electronic memory wherein a solenoid is energized by an operator striking a key on a keyboard. Energization of the solenoid activates an arm which simultaneously causes withdrawal of a detent from a display wheel and engagement of a pick-up wheel with a rotating power roll to enable a drive means to rotate the display wheel and a print wheel, which are in mesh engagement, until an electric signal from the keyboard is compared with a display wheel signal found on a commutator segment, after which the solenoid is deenergized to release the arm to simultaneously disengage the pick-up wheel from the power roll and engage the detent with the display wheel to lock the display wheel and print wheel into a stationary position, the display wheel exhibiting the selected character and the print wheel then being engaged by a platen to record the selected character on a suitable medium.
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