The document summarizes several common computer hardware components in 3-5 sentences each: - A monitor displays images generated by computers without producing a permanent record, comprising a display device, circuitry, and enclosure. Modern monitors use LCD while older used CRT. - A keyboard uses an arrangement of buttons to input letters, numbers, and commands through mechanical or electronic switches corresponding to symbols. Special key presses produce actions or commands. - A mouse detects two-dimensional motion to move a pointer on screen allowing fine control of GUIs, physically consisting of an object held in the hand with buttons and sometimes wheels. - A motherboard is the central circuit board that components plug into, known as the mainboard or system