IBM 701
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The IBM 701 Electronic Data Processing Machine, known as the Defense Calculator while in development, was IBM's first commercial scientific computer and its first series production mainframe computer,
IBM 701 operator's console
IBM 701 processor frame, showing 1071 of the vacuum tubes
Vacuum tube logic module from a 700 series IBM computer.
Williams tube from an IBM 701 at the Computer History Museum
IBM 650
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The IBM 650 Magnetic Drum Data-Processing Machine is an early digital computer produced by IBM in the mid-1950s. It was the first mass-produced computer in the world. Almost 2,000 systems were produce
IBM 701
…the arrival of the IBM System/360 in 1964. The business-oriented sibling of the 701 was the IBM 702 and a lower-cost general-purpose sibling was the IBM 650, which gained fame as the first mass-produced computer. IBM 701 competed with Remington Rand's UNIVAC 1103 in the scientific computation market. In…
Part of the first IBM 650 computer in Norway (1959), known as "EMMA". 650 Console Unit (right, an exterior side panel is open), 533 Card Read Punch unit (middle, input-output). 655 Power Unit is missing. Punched card sorter (left, not part of the 650). Now at Norwegian Museum of Science and Technology in Oslo.
IBM 650 at Texas A&M University. The IBM 533 Card Read Punch unit is on the right.
IBM 650 console panel, showing bi-quinary indicators. Note wear marks around frequently used switches, lower right. Collection of the Museo Nacional de Ciencia y Tecnología. A Coruña (Galicia, Spain).
Close-up of bi-quinary indicators