IBM CPC
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The IBM Card-Programmed Electronic Calculator or CPC was announced by IBM in May 1949. Later that year an improved machine, the CPC-II, was also announced.
IBM CPC assembly, with IBM 604 module on front
IBM CPC in 1954
IBM 604
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The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603. It was an electronic unit record machine that could perform m
IBM CPC
…The original CPC Calculator has the following units interconnected by cables: Electronic Calculating Punch IBM 604 with reader/punch unit IBM 521 Accounting Machine IBM 402 or IBM 417…
IBM 604 as part of IBM CPC assembly
IBM 604 Electronic Calculator at NEMO national science museum in Amsterdam. Note plugboard control panel used to program the 604, at bottom.
IBM 604 vacuum tube modules