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| Late-1950 |
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Initial market assessment visits to industrial customers |
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| December 1950 |
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IBM President Thomas J. Watson, Jr., establishes executive committee to define Defense Calculator specifications |
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| January 1, 1951 |
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Defense Calculator planning begins; 10 IBM Engineering Department people are assigned |
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| February 1, 1951 |
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Actual design begins |
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| February 1951 |
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Decision is made to approach potential Defense Calculator customers |
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Parts procurement begins |
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| March 1951 |
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Mathematical committee for Defense Calculator organized in Applied Science Department |
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Assembly operations begin |
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| September 1951 |
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Project engineering staff peaks at 155 people |
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| January 1952 |
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General manufacturing plans and schedules are prepared |
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| February 1952 |
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Design is completed; production program is approved |
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| March 1952 |
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Parts procurement is completed |
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| April 23, 1952 |
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Customer briefing calls begin |
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| April 29, 1952 |
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701 Announced: Watson discloses to stockholders a project to develop Defense Calculator |
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| Spring 1952 |
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Engineering design is completed |
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| May 1952 |
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10 confirmed orders are in hand |
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| May 21, 1952 |
| Branch managers are informed of "new Calculator, tentatively referred to as the IBM Electronic Data Processing Machine" |
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Official announcement of IBM 701 Electronic Analytical Control Unit |
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Official announcement of IBM 711 Punched Card Reader |
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Official announcement of IBM 716 Alphabetical Printer |
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Official announcement of IBM 721 Card Punch Recorder |
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Official announcement of IBM 726 Magnetic Tape Reader/Recorder |
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Official announcement of IBM 731 Magnetic Drum Reader/Recorder |
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Official announcement of IBM 741 Power Frame #2 (operator's panel) |
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Official announcement of IBM 746 Power Distribution Unit |
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| June 1952 |
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Laboratory model performs computations to exercise all system units |
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| June 1, 1952 |
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Assembly of first production machine begins |
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| July 1952 |
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Engineering Department releases machine for manufacture |
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| August 1952 |
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13 orders are in hand |
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| August 18, 1952 |
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Decision is made to produce 18 machines |
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| October 1952 |
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First 701 customer engineering class held in Poughkeepsie |
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| November 1952 |
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First customer administrative (programming) class held in N.Y. City |
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| December 31, 1952 |
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701 Installation: first production machine shipped from Poughkeepsie to IBM Technical Computing Bureau at World Headquarters in N.Y. City |
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| Early 1953 |
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Intensive cathode ray tube testing begins on the 2nd IBM 706 production unit |
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| Early 1953 |
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Intensive cathode ray tube testing begins on the 2nd
IBM 706 production unit |
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| March 31, 1953 |
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First production machine for customer -- machine #2 -- arrives at Los Alamos Scientific Lab; it is installed and operational three days later |
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| April 7, 1953 |
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First 701 public showing at IBM World Headquarters in N.Y. City |
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| September 25, 1953 |
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Official announcement of IBM 727 Magnetic Tape Unit |
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| January 8, 1954 |
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IBM 701 performs first computer Russian/English translation with the 701 Translator |
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| May 7, 1954 |
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Official announcement of IBM 736 Power Frame #1 (power supply) |
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| May 21, 1954 |
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Official announcement of IBM 706 Electrostatic Storage Unit |
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| June 1954 |
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Machine #18 is shipped to Lockheed Aircraft |
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| October 1, 1954 |
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Official announcement of IBM 737 Magnetic Core Storage Unit |
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Official announcement of IBM 753 Magnetic Tape Control Unit |
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IBM 701 is withdrawn from marketing |
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| October 12, 1954 |
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Official announcement of IBM 740 CRT Output Recorder |
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| March 1955 |
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IBM 701 at IBM World headquarters is featured on NBC-TV's "Today" show with Dave Garroway |
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| April 1955 |
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Machine #19 begins daily weather forecasts for Joint Numerical Weather Prediction Unit at Suitland, Md. |
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| June 6, 1956 |
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IBM 706 is withdrawn from marketing |
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| November 23, 1956 |
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IBM 711 is withdrawn from marketing |
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| July 14, 1969 |
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IBM 716 is withdrawn from marketing |
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IBM 721 is withdrawn from marketing |
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| May 12, 1971 |
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IBM 727 is withdrawn from marketing |
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IBM 721 is withdrawn from marketing |
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