SYSTEM UNIT

A system unit is the part of a computer that houses the primary devices that perform operations and produce results for complex calculations. It includes the motherboard, CPU, RAM and other components, as well as the case in which these devices are housed. This unit performs the majority of the functions that a computer is required to do. The term system unit is generally used to differentiate between the computer itself and its peripheral devices, such as the keyboard, mouse and monitor. A system unit is also known as a chassis

MONITOR

A monitor is an electronic visual computer display that includes a screen, computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin film transistor liquid crystal display (TFT-LCD) with LED backlighting having replaced cold-cathode fluorescent lamp (CCFL) backlighting. 

MOUSE AND KEYBOARD

The keyboard is the piece of computer hardware used to input text, characters, and other commands into a computer or similar device. A mouse is a small handheld input device that controls a computer screen’s cursor or pointer in conjunction with the way it is moved on a flat surface. 

SPEAKER

A device that converts analog audio signals into the equivalent air vibrations in order to make audible sound.

PRINTER

A printer is a device that accepts text and graphic output from a computer and transfers the information to paper, usually to standard size sheets of paper. Printers vary in size, speed, sophistication, and cost. In general, more expensive printers are used for higher-resolution color printing.

COMPUTER DESK

The computer desk and related ergonomic desk are furniture pieces designed to comfortably and aesthetically provide a working surface and house or conceal office equipment including computers, peripherals and cabling for office and home-office users.