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IBM's electronic (vacuum tube) calculators could perform multiple calulations, including division. The card-programmed calculators used fields on punched cards not to specify the actual operations to be performed on data, but which "microprogram" hard-coded onto the plugboard of the IBM 604 or 605 calculator machine; a set of cards produced ...
IBM 604 Electronic Calculator at NEMO national science museum in Amsterdam. Note plugboard control panel used to program the 604, at bottom.. The IBM 604 Electronic Calculating Punch was the world's first mass-produced electronic calculator along with its predecessor the IBM 603. [1]
A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card
To accommodate multiple users economically, time-consuming manual data entry could be performed offline, by use of several separate key-to-punch paper tape machines (called "add-punch" machines), whose numeric-only keyboards were slightly-modified versions of mechanical desk calculators.
1949: The IBM 024 Card Punch, 026 Printing Card Punch, 082 Sorter, 403 Accounting machine, 407 Accounting machine, and Card Programmed Calculator (CPC) introduced. [52] 1952: Bull Gamma 3 introduced. [53] [54] An electronic calculator with delay-line memory, programmed by a connection panel, that was connected to a tabulator or card reader ...
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