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Quizlet made its first acquisition in March 2021, with the purchase of Slader, which offered detailed explanations of textbook concepts and practice problems, and eventually incorporated it into its paid platform, Quizlet Plus. [20] [21] [22] In November 2022, Quizlet announced a new CEO, Lex Bayer, the former CEO of Starship Technologies. [23]
View history; Tools. Tools. move to sidebar hide. Actions ... Vehicles introduced in 1966 (5 C, ... This page was last edited on 13 October 2019, ...
The White House Conference on Civil Rights was held June 1 and 2, 1966. The aim of the conference was built on the momentum of the Civil Rights Act of 1964 and the Voting Rights Act of 1965 in addressing discrimination against African-Americans. The four areas of discussion were housing, economic security, education, and the administration of ...
Margaret Crane's patent illustration for "Diagnostic Test Device", the first home pregnancy test. Margaret M. Crane (Meg Crane) is an American inventor and graphic designer who created the first at home pregnancy test in 1967 while working at Organon Pharmaceuticals in West Orange, New Jersey. [1]
The history of computing hardware starting at 1960 is marked by the conversion from vacuum tube to solid-state devices such as transistors and then integrated circuit (IC) chips. Around 1953 to 1959, discrete transistors started being considered sufficiently reliable and economical that they made further vacuum tube computers uncompetitive.
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October 1 – West Coast Airlines Flight 956 crashes with 18 fatal injuries and no survivors 5.5 miles (8.9 km) south of Wemme, Oregon. This accident marks the first loss of a DC-9. [10] October 5 – An experimental breeder reactor at the Enrico Fermi Nuclear Generating Station in Michigan suffers a partial meltdown when its cooling system fails.
Between the mid-1940s and 1950s, various developments were made in computer software.Some of these developments include servo-motors controlled by generated pulse (1949), a digital computer with built-in operations to automatically coordinate transforms to compute radar related vectors (1951), and the graphic mathematical process of forming a shape with a digital machine tool (1952).