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Powering up a module from the IBM 604: an electronic calculator from 1948
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Powering up a module from the IBM 604: an electronic calculator from 1948
Ken Shirriff is back with vintage hardware, this time an IBM 604, an electronic calculator from 1948. 1948 was an interesting time for computing. For decades, businesses had used punch card equipment that added and sorted electromechanically. Now these electromechanical relays and counting wheels were being used to build room-filling general-purpose computers such as Harvard Mark I (1944) and IBM’s SSEC (1948). But slow electromechanical mechani…
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