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Other Certs: SCEA Part 1, Part 2 & 3, Core Spring 3, TOGAF part 1 and part 2
[OCP 17 book] | [OCP 11 book] | [OCA 8 book] [OCP 8 book] [Practice tests book] [Blog] [JavaRanch FAQ] [How To Ask Questions] [Book Promos]
Other Certs: SCEA Part 1, Part 2 & 3, Core Spring 3, TOGAF part 1 and part 2
Jeanne Boyarsky wrote:I'm giving a speech next month for Toastmasters (a group where you practice speaking) about how computer portable storage devices have changed over time.
I can think of these:
punchcard - hey it was portable and held data 8" floppy 5.25" floppy 3.5" floppy CD/DVD flash drive
What am I missing?
luck, db
There are no new questions, but there may be new answers.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
fred rosenberger wrote:The first page of this pdf has a woman inserting a disk into a PDP-11 machine.
Bear Bibeault wrote:An RK-05! I remember them well.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Bear Bibeault wrote:Ah yes, good old magtape! How I used to swear at it!
Pat Farrell wrote:BTW, the top photo is of an audio tape, not computer data tape. Looks like 7 inch, 1/4 inch. Probably stereo, which has four tracks, two in each direction.
Bear Bibeault wrote:
I"m having a heck of a time finding a photo of real magtape, so here are some puppies:
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Bear Bibeault wrote:I"m having a heck of a time finding a photo of real magtape, so here are some puppies:
[OCP 17 book] | [OCP 11 book] | [OCA 8 book] [OCP 8 book] [Practice tests book] [Blog] [JavaRanch FAQ] [How To Ask Questions] [Book Promos]
Other Certs: SCEA Part 1, Part 2 & 3, Core Spring 3, TOGAF part 1 and part 2
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Jesper Young wrote:I remember my dad sometimes taking punched cards home in the seventies, and my brother and I playing with them. The idea of punched cards is much older than you might think, it's from the 18th century.
I also remember punched tape from my dad.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Pat Farrell wrote:Probably stereo, which has four tracks, two in each direction.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
fred rosenberger wrote:I'll grant you probably four tracks, but 'direction' is meaningless to the tape. .
Pat Farrell wrote:
fred rosenberger wrote:I'll grant you probably four tracks, but 'direction' is meaningless to the tape. .
It depends. in the 60s and early 70s, reel-to-reel was fairly popular for higher end music, primarily because you could have longer uninterrupted sessions. A lot of consumer tape machines were 1/4" with four tracks. (1/16" each). If you label them A, B, C, and D, typically they would lay down the right channel on A and the left on B, then reverse the tape
and record right on D and left on C. (note that the head location stays fixed, but you flip the physical tape, so you use the other side.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Tim Holloway wrote:Actually, the reason for reel-to-reel's enduring popularity for professional recording was that cassette tape ran something line 1-1/2 inched per second, whereas reel-reel commonly ran over 7ips.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.
Bear Bibeault wrote:Ah, I remember FORTRAN Lab, my sophomore year. There is no cry of anguish quite as mournful as someone who has dropped their box of punch cards.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.