26 May
2005
26 May
'05
8:11 a.m.
>>>> "Al" == Al Kossow <aek at
bitsavers.org> writes:
> "Before the advent of magnetic disk storage,
computers stored
> their information on rolls of magnetic tape or coded punch
> cards. Retrieving information could take hours or days."
Al> Or magnetic drums, which did NOT have the access time problems of
Al> tape or cards (but, unfortunately weren't an IBM invention)
Did the drum come before RAMAC?
An obvious difference is that drums, being head per track devices,
always had rather low capacity.
paul