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History of Memory and Storage Systems. Stefan Gloutnikov. System Memory Technologies. - Drum Memory – 1932 - Delay Line Memory (mercury) – mid-1940’s - Williams tube & Selectron tube - 1946 - Magnetic Drum Memory - 1947 - Magnetic Core Memory – 1952-1953 - Plated Wire Memory – 1957
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History of Memory and Storage Systems Stefan Gloutnikov
System Memory Technologies • - Drum Memory – 1932 • - Delay Line Memory (mercury) – mid-1940’s • - Williams tube & Selectron tube - 1946 • - Magnetic Drum Memory - 1947 • - Magnetic Core Memory – 1952-1953 • - Plated Wire Memory – 1957 • - Twistor Memory – 1968-mid-1970’s • - Bubble Memory – 1970’s • - *Dynamic RAM (DRAM) – 1968 (Patents granted)
Memory Questions • History on the technology • Who and how it was invented • How each technology worked. • Where and how it was being used. • Benefits over previous technologies • Pros/Cons of using some of these technologies (from experts) • Volatile vs. Non-volatile
Storage Technologies • Punch Cards – 1725-1975 • Paper Tape - 1846 - 1990s • Magnetic Tape – 1951 • IBM 1301 Disk Drive - 1961 • Era of Magnetic Disk Emerges (IBM 305 RAMAC) - 1952 • The Floppy Disk (8”, 5.25”, 3.5”) - 1969 • Seagate 1st Hard Disk for Microcomputers (ST506) - 1980
Storage Questions • History on the technology • Who and how it was invented • How each technology worked. • Where and how it was being used. • Benefits over previous technologies • Pros/Cons of using some of these technologies (from experts)
Research • Interview questions from experts on pros, cons, general experiences and thoughts on these technologies. • Advisors for our class. • Possibly computer history museum volunteers. • IBM Archives – well documented for own technologies • Computer History Museum Archives
Deliverable • Report on the different memory and storage technologies from the past. • Answer questions proposed in previous slides for the technologies. • Include interviews from advisors and experts. • Images and schematics of the different technologies if they exist.