20 Apr
2017
20 Apr
'17
10:26 p.m.
----- Original Message -----
From: "Tony Duell via cctalk" <cctalk at classiccmp.org>
To: <rob at jarratt.me.uk>
Cc: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at
classiccmp.org>; "Shoppa, Tim" <tshoppa at wmata.com>
Sent: Thursday, April 20, 2017 11:48 PM
Subject: Re: Bitsavers size
On Thu, Apr 20, 2017 at 8:27 PM, Rob Jarratt
<robert.jarratt at ntlworld.com> wrote:
My back of the envelope calculation comes to approximately
4 million miles of paper tape.
I think you're out by a factor of 10.... 267*10^9 bytes, divide by 10 as
there are 10 bytes to the inch on paper tape, and convert to miles. I
get just over 400,000 miles.
My rule of thumb is that a full reel of 1" paper tape is 100k bytes
So 10 for a megabyte
10000 for a gigabyte
2,670,000 for all of bitsavers. Perhaps nearer 3 million as it's an
approximation....
-tony
----
I've got a couple of reels that I can contribute if you don't have quite
enough...
;-)
The
bitsavers archive is 267 Gbytes.
So at 4.7G per DVD, it comes out to almost 60 DVD's.
That is not totally ridiculous....
Now, if I want bitsavers on paper tape....
>