How far we've come in the last half century

    Date: 12/05/07 (Computer Geeks)    Keywords: no keywords

    What is this?



    It's the one-ton hard-disk storage unit for this:



    "The 350 Disk Storage Unit consisted of the magnetic disk memory unit with its access mechanism, the electronic and pneumatic controls for the access mechanism, and a small air compressor. Assembled with covers, the 350 was 60 inches long, 68 inches high and 29 inches deep. It was configured with 50 magnetic disks containing 50,000 sectors, each of which held 100 alphanumeric characters, for a capacity of 5 million characters.

    Disks rotated at 1,200 rpm, tracks (20 to the inch) were recorded at up to 100 bits per inch, and typical head-to-disk spacing was 800 microinches. The execution of a "seek" instruction positioned a read-write head to the track that contained the desired sector and selected the sector for a later read or write operation. Seek time averaged about 600 milliseconds."

    I thought I got a pretty sweet deal on my 40GB flash drive; now I feel even better about it.

    Source: http://community.livejournal.com/computergeeks/1133363.html

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