Got into a discussion on another forum about storing modern software on punchcards, and installing it from them...
The following link containing this was posted... http://www.ypsidixit.com/blog/archives/2005/08/remember_punch.html Posted by: Laura at 02 augustus 2005 15:44 A friend who works on digital video software offered this scenario for punch card video: Assumptions: - The same 72 data columns (bytes) per card - The same 8-byte sequence number (wraps around frequently...) - Standard NTSC DV - A seriously large can of WD-40 for the card reader - The local fire department on speed-dial - Ownership of a large block of stock in the company supplying the punch cards We compute: An NTSC DV stream constitutes 120000 bytes/frame. At 29.97 frames per second, this is equivalent to 3,596,400 bytes/sec. At 72 bytes per card, this is 49,950 cards per second, or 25 boxes of cards per second. To be sure of proper operation, one ought to make sure the card reader is properly lubricated. A 30 minute wedding video that I shot recently for a friend is equivalent to just under 100 million punch cards, in particular, it would be 89,910,000 cards. That's 45,000 boxes of cards. If each box is 3 1/4" high, the stack of boxes would top 2.3 miles (== 12187.5 feet, or 146,250 inches, not counting for gravitational compression of the lower boxes of cards). They would not fit in the trunk of my car. Computing further, we find that the little DV tape's total capacity (1 hour) would make a box of punch cards high enough to be a serious navigational hazard for coast-to-coast flights. So far, the FAA has not issued any statements regarding this concern. And, for those of you curious about that 8 byte sequence (so the card reader can keep things in order (just in case of a misfeed at these speeds)), it turns out to wrap around 14,000 times per second. The punch card equivalents of the various HD formats are left as exercises for the reader. ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Adobe-Premiere/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Adobe-Premiere/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
