Nov 27, 2025 · personal computer (PC), a digital computer designed for use by only one person at a time.

Oct 17, 2025 · A computer is a programmable device for processing, storing, and displaying information. Learn more in this article about modern digital electronic computers and their …

Oct 20, 2025 · A computer is a machine that can store and process information. Most computers rely on a binary system, which uses two variables, 0 and 1, to complete tasks such as storing …

1 day ago · Pentagon, large five-sided building in Arlington county, Virginia, near Washington, D.C., that serves as the headquarters of the U.S. Department of Defense, including all three …

History, etymology, and pronunciation of k, the 11th letter of the alphabet. It has changed its shape less perhaps than any other letter in the history of the alphabet. The sound represented …

Oct 17, 2025 · The mill was the calculating unit, analogous to the central processing unit (CPU) in a modern computer; the store was where data were held prior to processing, exactly …

As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral …

Dec 4, 2025 · The Surrender of Lord Cornwallis The Surrender of Lord Cornwallis (at Yorktown, Virginia, on October 19, 1781), oil on canvas by John Trumbull, completed in 1820; in the U.S. …

Robert C. Byrd of West Virginia (whose tenure lasted more than 51 years, from January 3, 1959, to June 28, 2010) is the longest-serving member in U.S. Senate history, followed by Daniel K. …

6 days ago · Owners of enslaved people in the South reacted to the 1831 Nat Turner slave revolt in Virginia by passing laws to discourage antislavery activism and prevent the teaching of …