Accession Number:

AD0671955

Title:

PHYSICAL BASES OF CERTAIN TEST PROGRAMS FOR IMMEDIATE-ACCESS MAGNETIC MEMORY UNITS (FIZICHESKIE OSNOVY NEKOTORYKH ISPYTATELNYKH PROGRAM DLYA MAGNITNYKH OPERATIVNYKH ZAPOMINAYUSHCHIKH USTROISTV),

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1967-11-08

Pagination or Media Count:

21.0

Abstract:

The article examines various matters involving numerical and qualitative evaluation of test programs from the standpoint of their effect on storage environment and the electronic equipment of immediate-access magnetic storage units. At the present time tests for immediate-access magnetic storage units of some digital computers are compiled without taking into consideration the parameters of the ferrite cores and the electronic circuits. When tests for these units are compiled the number of shifts of magnetic state from zero or unity to the state determined by the static hysteresis loop, the number of partial access currents to which the cores are subjected and the equiprobability of keeping zero or unity in each digit position must be based on calculations. Correctly compiled tests are ranked by complexity of execution as follows checks on the electronic part, tests of storage of random information, checks on the magnetic part of the immediate-access magnetic storage unit. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Computer Hardware

Distribution Statement:

APPROVED FOR PUBLIC RELEASE