Biax (from lat. Bis - twice, lat. Axis - axis ) is a ferrite storage element with a branched magnetic circuit in which magnetic fluxes are closed around two mutually perpendicular holes with intersecting axes. [1] Unlike ferrite rings, the element allows you to repeatedly read the recorded information without destroying it.
Content
Principles of Operation
The work of biax is based on the interaction of orthogonal magnetic fluxes in a common area for two magnetic circuits. Information is recorded by the complete magnetization reversal of one magnetic circuit in one of two directions (0 or 1), reading is performed by applying unipolar polling current pulses via the bus through the second magnetic circuit. In this case, the flows are redistributed in the jumper between the holes so that an EMF of a different sign is induced in the bus passing through the first hole, depending on the previous information. After switching off the polling current, the initial distribution of flows in the jumper is restored. That is, reading information from the biax is carried out without destroying the information, thus, it does not take time to restore it.
Application
They are used in long-term memory devices on magnetic cores with fast change of information, where slow recording is allowed. The write access frequency is 200-300 kHz, and when reading 2-5 MHz. It was used, in particular, in some computers of the BESM family.
Notes
- ↑ Dictionary of Cybernetics / Edited by Academician V. S. Mikhalevich . - 2nd. - Kiev: The main edition of the Ukrainian Soviet Encyclopedia named after M.P. Bazhan, 1989. - 751 p. - (C48). - 50,000 copies. - ISBN 5-88500-008-5 .
See also
- Ferrite memory
Links
- Biax // Big Soviet Encyclopedia : [in 30 vol.] / Ch. ed. A.M. Prokhorov . - 3rd ed. - M .: Soviet Encyclopedia, 1969-1978.
Literature
- Vizun Yu. I., On the use of elements of the type "Biax" in RAM, M., 1965.