| 单词 | drum memory | 
| 释义 | > as lemmasdrum memory   drum memory  n. Computing (now historical) a data storage device consisting of a rotating cylinder with a magnetizable outer surface on which the data can be stored; (as a mass noun) storage capacity or facilities of this type. ΘΚΠ society > computing and information technology > hardware > secondary storage > 			[noun]		 > magnetic > drum memory drum1933 magnetic drum1946 drum1948 drum memory1952 1952    Proc. Electronic Computer Symp. 		(Inst. Radio Engineers)	 ii. 1  				A drum memory, as contrasted with an electrostatic memory, may have an extremely large capacity. 1970    O. Dopping Computers & Data Processing x. 145  				Nowadays, the drum memory is normally a secondary memory. 2012    M. S. Malone Guardian all Things ix. 205  				Drum memory barely matched the capacity of magnetic tape, and its access times were much slower than core memory. < as lemmas | 
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