13 Aug
2004
13 Aug
'04
6:55 a.m.
On Thu, 12 Aug 2004, Stan Barr wrote:
No need to imagine - Calculate:
Lets say that the Paper Tape is in ASCII format, then each character is
a Byte - and that the Reader is a fairly advanced optical device running
at a conservative 1200 bytes per minute.
2000 GB (2 TB) is 2*10^12
so (2*10^12)/1200 = 1.66666667*10^9 minutes to read 2 TB
/60 = 27,777,777.8 hours
/24 = 1,157,407.41 days
/365 = 3171 years
presupposing a Really Good reader that could operate that long w/out any
maintenance or downtime.... probably Sellam has a couple of these on his
Shelves.
NOW: 10 KB of 5-mil thick punched paper tape on a 3/4-inch hub with a
punch width of .060 and an inter-character width of .060 makes a diameter
of.... oops my brain just exploded - sorry.
But damn! that would be an impressive wheel of paper!!!!
Cheers
John
Hi,
ben franchuk <bfranchuk(a)jetnet.ab.ca> said:
> Stan Barr wrote:
>
>> Work is still in progress. Shizuka University in Japan recently demoed
[snippage]
What is too slow. Paper Tape is slow. :)
They don't say how fast, but imagine how long it would take to read
2000Gb at paper tape speeds :-)