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NewsHow RESTful is Your API? Pin
Terrence Dorsey27-Aug-12 14:03
sitebuilderTerrence Dorsey27-Aug-12 14:03 
NewsThe Apple Tax, Part II Pin
Terrence Dorsey27-Aug-12 14:02
sitebuilderTerrence Dorsey27-Aug-12 14:02 
NewsEight good reasons to upgrade to Windows 8 Pin
Terrence Dorsey27-Aug-12 14:02
sitebuilderTerrence Dorsey27-Aug-12 14:02 
GeneralRe: Eight good reasons to upgrade to Windows 8 Pin
Clifford Nelson27-Aug-12 14:21
Clifford Nelson27-Aug-12 14:21 
GeneralRe: Eight good reasons to upgrade to Windows 8 Pin
ed welch29-Aug-12 1:02
ed welch29-Aug-12 1:02 
NewsThe History of the Floppy Disk Pin
Terrence Dorsey27-Aug-12 14:01
sitebuilderTerrence Dorsey27-Aug-12 14:01 
General3.5" Floppy Pin
Clifford Nelson27-Aug-12 14:15
Clifford Nelson27-Aug-12 14:15 
GeneralRe: The History of the Floppy Disk Pin
Vivi Chellappa27-Aug-12 22:01
professionalVivi Chellappa27-Aug-12 22:01 
This history was pulled out of his arse by the author.

This is so full of inaccuracies that I don't even know where to begin.

"Magnetic tape was common for storage in pre-personal computing days, but it had two main annoyances: it held tiny amounts of data, and it was slower than a slug on a cold spring morning."

Tiny amounts of data? Magnetic tapes were commonly 2400' in length and held data at 3200 bits/inch. That translatesd to about 90 megabytes. Since there were 9 tracks on the tape, that is about 720 megabits of storage (1 bit being used for parity check). Even if fully half the tape is wasted on inter-record gaps, that works out to 45 megabytes of data.Compare that to 1.44 megabytes on the final iteration of the 3.5" floppy.

Slower than a slug? At a speed of 120 inches/second, you get a data transfer rate of 384,000 bytes/second. The floppy, according to Wikipedia, had a maximum transfer rate of 1 million bits/second, translating to 125K bytes/second.

"I didn't know that IBM had decided as early as 1967 that tape-drives, while fine for back-ups, simply weren't good enough to load software on mainframes. So it was that Alan Shugart assigned David L. Noble to lead the development of “a reliable and inexpensive system for loading microcode into the IBM System/370 mainframes using a process called Initial Control Program Load (ICPL).” From this project came the first 8-inch floppy disk."

A tape could get lost in the vast library of tapes that a company would have. If the microprogram could be somehow stored in such a manner that it would never get lost, that would be one service call less for the IBM customer engineer each time someone misplaced the tape containing the microcode. The floppy drive was built into the cabinet of the CPU and the floppy drive containg the microcode for the IBM mainframe was copied into the flopp[y disk and put inside the floppy drive. I don't remember if it was possible to eject the media out of the floppy drive but somehow I think the user couldn't.

There were three buttons one rarely touched on the front panel (or, back side) of the IBM 360 mainframes. The first of these is the IPL (Initial Program Load) button. This would re-boot the computer by reloading the operating system. The second is the IMPL (Initial Micro Program Load, not ICPL) button, which actually reloaded the instruction set that the mainframe was capable of executing into ROM from the floppy disk. The third was the big red switch that turned the power off to the mainframe.

"According to Don Massaro (PDF link), another IBMer who followed Shugart to the new business, Wang’s founder Charles Wang said, “I want to come out with a much lower-end word processor. It has to be much lower cost and I can't afford to pay you $200 for your 8" floppy; I need a $100 floppy.”"

First of all, the founder of Wang Computers was An Wang; Charles Wang founded Computer Associates, Inc.

Even after several iterations the 5-1/4" floppy drive was being sold at $650. Some years after the IBM PC came out - that would make it the mid-to-late-1980's - Tandon Corporation announced the first sub-$400 floppy drive. It was the 1990s before you got to the $100 floppy drive.

Enough already!
GeneralRe: The History of the Floppy Disk Pin
Clifford Nelson28-Aug-12 6:25
Clifford Nelson28-Aug-12 6:25 
NewsIs Microsoft the big winner in Apple’s win over Samsung? Pin
Terrence Dorsey27-Aug-12 14:01
sitebuilderTerrence Dorsey27-Aug-12 14:01 
NewsWho inherits your iTunes library? Pin
Terrence Dorsey27-Aug-12 14:00
sitebuilderTerrence Dorsey27-Aug-12 14:00 
GeneralI hate ITunes Pin
Clifford Nelson27-Aug-12 14:03
Clifford Nelson27-Aug-12 14:03 
GeneralRe: I hate ITunes Pin
Clifford Nelson27-Aug-12 14:17
Clifford Nelson27-Aug-12 14:17 
GeneralRe: I hate ITunes Pin
cansino27-Aug-12 21:54
cansino27-Aug-12 21:54 
GeneralRe: I hate ITunes Pin
Clifford Nelson28-Aug-12 6:18
Clifford Nelson28-Aug-12 6:18 
GeneralRe: I hate ITunes Pin
Maximilien28-Aug-12 3:56
Maximilien28-Aug-12 3:56 
GeneralRe: I hate ITunes Pin
Clifford Nelson28-Aug-12 6:21
Clifford Nelson28-Aug-12 6:21 
GeneralActually Pin
Clifford Nelson28-Aug-12 6:23
Clifford Nelson28-Aug-12 6:23 
GeneralRe: Who inherits your iTunes library? Pin
wout de zeeuw28-Aug-12 2:46
wout de zeeuw28-Aug-12 2:46 
NewsMessage Removed Pin
27-Aug-12 8:51
professionalN_tro_P27-Aug-12 8:51 
GeneralRe: Apple vs Samsung Pin
Clifford Nelson27-Aug-12 9:37
Clifford Nelson27-Aug-12 9:37 
NewsIs Twitter open source-washing its image? Pin
atbennett27-Aug-12 5:26
atbennett27-Aug-12 5:26 
AnswerRe: Is Twitter open source-washing its image? Pin
Chris Meech27-Aug-12 6:56
Chris Meech27-Aug-12 6:56 
NewsFunctional Programming for the Object Oriented Programmer Pin
Terrence Dorsey26-Aug-12 12:39
sitebuilderTerrence Dorsey26-Aug-12 12:39 
GeneralRe: Functional Programming for the Object Oriented Programmer Pin
Nemanja Trifunovic27-Aug-12 2:51
Nemanja Trifunovic27-Aug-12 2:51 

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