公开(公告)号：US3665403A

公开(公告)日：1972-05-23

申请号：US3665403D

申请日：1970-04-01

Applicant: IBM

Inventor： IGEL JOHN J ,  ROCHESTER ,  SCHETTL MYRON D

IPC: G06K5/00 ,  G06F15/02

CPC classification number: G06K5/00

Abstract: A data recorder for punching document cards which are of the type having three tiers into which encoded data may be punched, the system including a keyboard on which characters are entered serially, a magneto-strictive delay line constituting a storage device for storing encoded data from the keyboard in such serial form and circuitry for actuating punches from spaced characters in the storage device. The same machine may be used for verifying a previously punched document card utilizing the same keyboard as that for punching and includes circuitry by means of which program data may be entered into the data circulating through the delay line; and the recorder includes, in addition, circuitry for providing a right adjust function and for field or record erasing both under program control and in verify mode. Also, the machine includes circuitry for changing the data circulating through the delay line on verification to correct an error and repunching mechanism so that a corrected document card may then be made without any rekeying.