26 Feb
2009
26 Feb
'09
1:28 p.m.
Assuming a 6MB MP3 file and 40 bytes per card:
6 * 1048576 = 6291456 bytes
/ 40 bytes per card = 157286.4 (157285) cards
* .178mm card thickness = 27996.73 mm high
/ 25.4mm per inch = 1102.233465 inches
/ 12 = 91.85278871 (91.85) feet
Hell the university used to punch several times that many cards every
quarter just for registration. :)
But if you treat them as binary cards, you could get 120 bytes per
card. Three to one compression! *And*, 400cpm readers are still
available; that'd give you 384 kbit/sec read rate...
De