Monitor - Device for operational visual communication of the user with the control device and data display, Mouse - Coordinate device for controlling the cursor and giving various commands to the computer, Keyboard - A device that allows the user to enter information into a computer, main memory - the main place for storing commands and data of current tasks (programs) in personal computers., Hard disk drive - it is an energy-dependent device required for data storage, motherboard - A printed circuit board, which is the basis for building a modular electronic device, for example, a computer, Power Supply Unit - A device designed to convert AC voltage from the mains to DC voltage for the purpose of powering a computer, Optical Disk Drive - Electromechanical device for reading and writing, by means of a laser, information from optical disks, Case - A set of software engineering tools and methods for software design, CPU - An electronic unit or an integrated circuit that executes machine instructions, the main part of the computer hardware, Expansion cards - Expansion cards required to connect external devices can also be called adapters or controllers of these devices,

Computer systems

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