Genome, On Tue, 28 Nov 2006 02:55:38 +0800, Genome wrote: > was not punch cards or tape used as storage when the first computer like > mechanisms were invented.. a hole and no hole on paper.. this were a lot > older than those vacuume tube computers.. they are more like type writers. I > think. Yes, Hollerith used punched cards for the US Census in 1890, processed electro-mechanically. It meant the census results were available before the next census was taken! FORTRAN uses "H" to indicate a "Hollerith" data type (character string). Punched tape was used in 1944 by Colossus, the Lorenz-encryption cracking computer (which was electronic) and read it at a speed that even these days is pretty staggering for paper tape (5000 char/sec). Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist