Dec 22, 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 …

Mainframe, digital computer designed for high-speed data processing with heavy use of input/output units such as large-capacity disks and printers. Mainframes have been used for …

Nov 21, 2025 · Operating system, program that manages a computer’s resources, especially the allocation of those resources among other programs.

Dec 22, 2025 · Computer memory is divided into main (or primary) memory and auxiliary (or secondary) memory. Main memory holds instructions and data when a program is executing, …

Nov 28, 2025 · A computer network consists of two or more computers that are connected to each other to communicate data electronically. Two basic network types are local area networks …

Jan 4, 2026 · RAM, computer main memory in which specific contents can be accessed (read or written) directly by the central processing unit in a very short time regardless of the sequence …

Dec 22, 2025 · RAM, computer main memory in which specific contents can be accessed (read or written) directly by the central processing unit in a very short time regardless of the sequence …

Dec 22, 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 …

Dec 22, 2025 · The earliest forms of computer main memory were mercury delay lines, which were tubes of mercury that stored data as ultrasonic waves, and cathode-ray tubes, which …

The earliest forms of computer main memory were mercury delay lines, which were tubes of mercury that stored data as ultrasonic waves, and cathode-ray tubes, which stored data as …