Magnetic drum memory provided either 16, 384 or 32, 768 words, in one or two drums with 16, 384 words each.
32.
Control Data started by selling magnetic drum memory systems to other computer manufacturers, but introduced their own mainframe, the CDC 1604, in 1958.
33.
The memory was 64K, with the incoming radar information storage was on magnetic drums and the maximum response overload before collapse was around 45 seconds.
34.
Storage consisted of five magnetic drums ( one was a spare ) with 32, 768 25-bit words each, and six tape units.
35.
The scanning was carried out by a magnetic drum, each track of which is divided into 100 sections or words, one for each line.
36.
This version used a magnetic drum in place of the disk, its increased performance allowing more data to be stored before performance became an issue.
37.
Secondary storage was provided in the form of a 512-page magnetic drum, storing two pages per track, with about 30 milliseconds revolution time.
38.
Its magnetic drum memory held 2, 160 Single-precision multiplication took 2, 439 microseconds and double-precision multiplication take 16, 700 microseconds.
39.
The first automatic intercept systems used rotating magnetic drums containing multiple recorded phrases, with a computer or mechanical control system playing phrases in the proper sequence.
40.
The Magnetic Drum Reader / Recorder was added on the recommendation of John von Neumann, who said it would reduce the need for high speed I / O.
