| 单词 | magnetic drum |
| 释义 | > as lemmasmagnetic drum magnetic drum n. Computing a revolving cylinder having a magnetizable outer surface on which data is stored in the form of magnetized spots on circular tracks. ΘΚΠ society > computing and information technology > hardware > secondary storage > [noun] > magnetic > drum memory drum1933 magnetic drum1946 drum1948 drum memory1952 1946 C. B. Sheppard in Moore School Lect. (1985) 252 The relative access times..are based on having approximately 30,000 pulses along the scanned dimension except for the cases of the magnetic drum which is based on 1,000 pulses. 1950 W. W. Stifler High-speed Computing Devices (Engin. Res. Associates) xiv. 304 A rotating magnetic drum..is a static storage system..because data recorded on the drum are static with respect to the surface of the drum. 1955 Sci. Amer. June 98/2 For the larger, intermediate-speed memory of a computer the favorite device at present is the magnetic drum. 1986 S. L. Mandell Working with Applic. Software ii. 32 Data stored on magnetic disks or magnetic drums does not have to be read in order from the beginning. < as lemmas |
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