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 12, 2025 · Quantum computer, device that employs properties described by quantum mechanics to enhance computations. Plans for building quantum computers have been …

Oct 15, 2025 · Computer security, the protection of computer systems and information from harm, theft, and unauthorized use. Computer hardware is typically protected by serial numbers, …

Oct 17, 2025 · By the second decade of the 19th century, a number of ideas necessary for the invention of the computer were in the air. First, the potential benefits to science and industry of …

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 …

Oct 17, 2025 · The history of the solving of these problems is the history of the computer. That history is covered in this section, and links are provided to entries on many of the individuals …

Oct 17, 2025 · Computer science is the study of computers and computing, including their theoretical and algorithmic foundations, hardware and software, and their uses for processing …

Take this Geography & Travel quiz at Encyclopaedia Britannica to test your knowledge of U.S. state capitals.

Oct 11, 2025 · personal computer (PC), a digital computer designed for use by only one person at a time.

Computer software is divided into two basic types—the operating system and application software. The operating system controls how the different parts of hardware work together. …