IBM 701
Computer
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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, which was announced to the public on May 21,... Wikipedia
Date introduced: 1952
Also known as: Defense Calculator
Developer: Jerrier Haddad; Nathaniel Rochester
Introductory price: $12,000 a month rental charge / $15,000 a month per 40-hour shift
Memory: Total memory of 2048 words of 36 bits each (72 Williams tubes with a capacity of 1024 bits each)
Successor: IBM 704
Units shipped: 19