Accession Number : AD0807462

Title :   THE USE OF TAPES FOR THE STORAGE OF DIGITAL DATA.

Descriptive Note : Techical rept.,

Corporate Author : ILLINOIS UNIV AT URBANA RADIO RESEARCH LAB

Personal Author(s) : Ernst, Edward W. ; Vonderohe, Robert H.

Report Date : JAN 1967

Pagination or Media Count : 54

Abstract : Two of the more frequently used media for the storage of data in conjunction with digital systems are punched paper tape and magnetic tape. Both of these media are subject to errors. Paper tape, while cheaper to purchase than magnetic tape, exhibits a higher error rate per character. There are numerous error detection schemes used for both media including lateral and longitudinal parity, check characters based on the information content, knowledge of data patterns, and error detection codes. The correction of all errors is not possible. However, certain types of errors occur more frequently than others. Utilizing this fact it is possible to select an error correction scheme which will correct the greatest number or the most critical errors. Error correction schemes include deduction from parity, interpolation of related data, reconstruction from check characters, and a wide variety of specific error correction codes. (Author)

Descriptors :   (*PUNCHED TAPE, DATA PROCESSING), (*MAGNETIC TAPE, DATA PROCESSING), DIGITAL COMPUTERS, ERRORS, DETECTION, CORRECTIONS, RADIO EQUIPMENT, DIRECTION FINDING, RADIO TRANSMISSION, INSTRUCTION MANUALS, COMPUTER PROGRAMMING, DATA STORAGE SYSTEMS.

Subject Categories : Computer Programming and Software
      Computer Hardware
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE