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microprocessor

(Encyclopedia)microprocessor, integrated circuit containing the arithmetic, logic, and control circuitry required to interpret and execute instructions from a computer program. When combined with other integrated c...

Powell, Colin Luther

(Encyclopedia)Powell, Colin Luther, 1937–2021, U.S. army general and government official, b. New York City, grad., City College (B.S., 1958); George Washington Univ...

Celt

(Encyclopedia)Celt kĕlt [key]. 1 One who speaks a Celtic language or who derives ancestry from an area where a Celtic language was spoken; i.e., one from Ireland, the Scottish Hebrides and Highlands, the Isle of M...

Rumsfeld, Donald Henry

(Encyclopedia)Rumsfeld, Donald Henry, 1932–2021, American government official, b. Chicago, Princeton Univ. (B.A., 1954). After graduating college, Rumsfeld enliste...

Zizka, John

(Encyclopedia)Zizka, John yän zhēshˈkä [key], d. 1424, Bohemian military leader and head of the Hussite forces during the anti-Hussite crusades of Holy Roman Emperor Sigismund. Before the Hussite Wars, which ga...

elementary particles

(Encyclopedia)CE5 elementary particles, the most basic physical constituents of the universe. The first subatomic particle to be discovered was the electron, identified in 1897 by J. J. Thomson. After the...

Syria

(Encyclopedia)CE5 Syria sērˈēə [key], officially Syrian Arab Republic, republic (2015 est. pop. 18,735,000), 71,467 sq mi (185,100 sq km), W Asia. It borders on Lebanon and the Mediterranean Sea in the west,...

Eisenhower, Dwight David

(Encyclopedia)Eisenhower, Dwight David īˈzənhouˌər [key], 1890–1969, American general and 34th President of the United States, b. Denison, Tex.; his nickname was “Ike.” In his farewell address as pr...

Decatur

(Encyclopedia)Decatur. 1 City (2020 pop. 57,938), seat of Morgan co., N Ala., on the Tennessee River; inc. 1826. It has shipyards, port traffic, and diverse ...

Feynman, Richard Phillips

(Encyclopedia)Feynman, Richard Phillips fīnˈmən [key], 1918–88, American physicist, b. New York City, B.S. Massachusetts Institute of Technology, 1939, Ph.D. Princeton, 1942. From 1942 to 1945 he worked on the...