Dynamic data storage device employing triggered silicon controlled rectifier for storing

Claim 1

A PULSE READ-IN CIRCUIT FOR USE IN A PUNCH CARD READING DEVICE COMPRISING: A SILICON CONTROLLED RECTIFIER HAVING A GATE ELEMENT, AN ANODE ELEMENT AND A CATHODE ELEMENT; INPUT SIGNAL MEANS CONNECTED TO SAID GATE ELEMENT OF SAID SILICON CONTROLLED RECTIFIER; OUTPUT SIGNAL MEANS CONNECTED TO SAID ANODE OF SAID SILICON CONTROLLED RECTIFIER; FIRST AND SECOND TRANSISTORS EACH HAVING AN INPUT ELEMENT, AN OUTPUT ELEMENT AND A CONTROL ELEMENT; SAID INPUT AND SAID OUTPUT ELEMENT OF SAID FIRST TRANSISTOR COUPLED TO SAID CATHODE OF SAID SILICON CONTROLLED RECTIFIER AND TO GROUND POTENTIAL, RESPECTIVELY; BIASING MEANS COUPLED TO SAID CONTROL ELEMENT OF SAID FIRST TRANSISTOR TO PROVIDE A BIAS THERETO WHICH WOULD NORMALLY DRIVE SAID FIRST TRANSISTOR DEVICE INTO CONDUCTION; SAID OUTPUT ELEMENT OF SAID SECOND TRANSISTOR COUPLED TO SAID BIASING MEANS TO DEVELOP A CUT-OFF VOLTAGE POTENTIAL THEREAT IN RESPONSE TO THE CONDUCTION OF SAID SECOND TRANSISTOR;