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2. Computer - Wikipedia

   en.wikipedia.org/wiki/Computer

   A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations (computation). Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. The term computer system may refer to a nominally ...

3. Operating system - Wikipedia

   en.wikipedia.org/wiki/Operating_system

   An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and other ...

4. Computer hardware - Wikipedia

   en.wikipedia.org/wiki/Computer_hardware

   Computer hardware includes the physical parts of a computer, such as the central processing unit (CPU), random access memory (RAM), motherboard, computer data storage, graphics card, sound card, and computer case. It includes external devices such as a monitor, mouse, keyboard, and speakers. [ 1 ][ 2 ]

5. Embedded system - Wikipedia

   en.wikipedia.org/wiki/Embedded_system

   Embedded system. An embedded system is a specialized computer system —a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. [1][2] It is embedded as part of a complete device often including electrical or electronic hardware ...

6. Desktop computer - Wikipedia

   en.wikipedia.org/wiki/Desktop_computer

   Desktop computer. A desktop computer system. It has a monitor, keyboard, mouse, speakers, and a computer tower. The computer tower contains the motherboard and processor. A computer lab with desktop PCs with flat-panel monitors. A desktop computer (often abbreviated desktop[1]) is a personal computer designed for regular use at a stationary ...

7. Z3 (computer) - Wikipedia

   en.wikipedia.org/wiki/Z3_(computer)

   The Z3 was a German electromechanical computer designed by Konrad Zuse in 1938, and completed in 1941. It was the world's first working programmable, fully automatic digital computer. [ 3 ] The Z3 was built with 2,600 relays, implementing a 22- bit word length that operated at a clock frequency of about 5–10 Hz. [ 1 ]

8. Comparison of operating systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_operating...

   The article " Usage share of operating systems " provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...

9. Kernel (operating system) - Wikipedia

   en.wikipedia.org/wiki/Kernel_(operating_system)

   The kernel is a computer program at the core of a computer 's operating system and generally has complete control over everything in the system. The kernel is also responsible for preventing and mitigating conflicts between different processes. [ 1 ] It is the portion of the operating system code that is always resident in memory [ 2 ] and ...