| 摘要 |
PURPOSE:To eliminate power consumption by detecting that a connection terminal of an external equipment mounted to the equipment main body and a connecting terminal of the equipment main body are connected. CONSTITUTION:An AND gate generates a trigger signal R to eject a card C through the coincidence among switches IN, LP, EJ and a NAND gate G1. When the card is loaded (IN=H), terminals are connected (LP=H) and the card is not accessing (AC=H), a signal of the ejection switch EJ is equal to a card ejection trigger signal R. When the pulse width of an output signal of a one-shot generating circuit P1 is selected as small as the input signal setup permissible time to a set terminal S of the flip-flop 3, one card ejection is executed independently of the length of the time when the operator depresses the ejection switch EJ. |
