Data transfer control device

• US 3,218,611 A
• Filed: 04/18/1961
• Issued: 11/16/1965
• Est. Priority Date: 04/20/1960
• Status: Expired due to Term

• Current Assignee: George Edwards David Beverley, Tom Kilburn
• Original Assignee: George Edwards David Beverley, Tom Kilburn
• Inventors: Kilburn, Tom, GEORGE EDWARDS DAVID BEVERLEY
• Application Number:
  US04/103,785
• Time in Patent Office: 1,673 Days
• US Class Current: 711/117
• CPC Class Codes: G06F 12/122 of the least frequently used [LFU] type, e.g. with individual count value

Claims

1. AN ELECTRONIC DIGITAL COMPUTING MACHINE WHICH INCLUDES AN IMMEDIATE OR HIGH ACCESS SPEED MAIN DATE WORD STORE FOR REGISTERING DATA WORDS, EACH IDENTIFIED BY A PROGRAM IDENTIFICATION ADDRESS, TO BE USED IN CURRENTLY OPERATIVE COMPUTING PROGRAMME, A SECONDARY DATA WORD STORE OF A TYPE IN WHICH THE VARIOUS STORAGE LOCATIONS OR ADDRESSES ARE DESIGNATED BY SECONDARY STORE ADDRESSES AND BECOME AVAIBALE SEQUENTIALLY, TWO-WAY WORD TRANSFER CHANNELS BETWEEN SAID MAIN AND SECONDARY STORES, CONTROL MEANS FOR EFFECTING TRANSFER OF DATA WORDS FROM SAID SECONDARY STORE TO SAID MAIN STORE AND FROM SAID MAIN STORE INTO SAID ONE OF THE ADDRESS LOCATIONS OF SAID SECONDARY STORE WHICH IS ALREADY UNOCCUPIED AND IS NEXT AVAILABLE AFTER THE TIME OF A REQUIREMENT TAO EFFECT TRANSFER, AND DIRECTORY REGISTER MEANS FOR RECORDING THE PROGRAMME IDENTIFICATION ADDRESS OF EACH OF SAID TRANSFERRED DATA WORS AND THE SECONDARY STORE ADDRESS TO WHICH EACH OF SAID DATA WORDS HAS BEEN TRANSFERRED.