Study of the Residual States of Ferrite Cores in Computer Memory Operation

摘要

The two complimentary residual states of magnetic induction used to represent binary information in a ferrite core storage system have been studied. The flux density found at the two states depends on any large fields which may have saturated the core in the past, as well as on the nature of the driving fields employed in the system. The partial‐select noise amplitude is a function of the residual magnetic induction and saturation history. By applying this information, “delta” noise can be eliminated. The role of the post‐write disturb pulse in preventing errors under certain abnormal operating conditions has been determined.