Computer parts

System Unit
System unit (chassis) is a set of electronic components of a computer that provides the proper its operating. There are six main system unit components:
  1. Motherboard – a system core. Actually, it is a heart of computer. Other system elements are connected to motherboard, and the whole system is managed and controlled by it. Motherboard contains special chips on which some ICs (Integrated circuits) are etched.Image result for motherboard
  2. Processor – a computer engine, its brain. CPU (central processing unit) manages most of computer operations. Processors can be with pins or pin-less. It contains a control unit and a logic unit.Image result for processor images
  3. RAM (random access memory) – primarily memory. It storages all data processed by programs and apps on the computer. There are dynamic and static RAMs.Image result for ram
  4. Hard Drive – a system memory that storages data in a form of archives. Here all our files, folders, operating system, programs, and applications are saved. Hard driver can be of two type: PATA (Parallel Attachment Packet Interface) and SATA (Serial Attachment Packet Interface).Image result for hard disc
  5. Video Card (graphics adapter) – with its help the outputs from a computer are displayed on the screen. Modern video cards support HDMI (high-definition multimedia interface), VGA (video graphics array) and DVI (digital visual interface).Image result for nvidia graphics card 1050 ti 4gb
  6. Power Supply – provides every part of PC with electrical power.Image result for PSU
    7.Case – House the internal components of the computerImage result for computer casing
 The term "system unit" is often used to differentiate between the computer and peripheral devices, such as the monitor, keyboard, and mouse. For example, if a repair shop asks you to bring in your computer, it may be unclear whether you need to bring your monitor and peripheral devices as well. If you are told to just bring your system unit, it is clear you only need to bring the computer itself.
Some modern computers, such as the iMac, combine the system unit and monitor into a single device. In this case, the monitor is part of the system unit. While laptops also have built-in displays, they are not called system units, since the term only refers to desktop computers.

Source:
https://www.computerhope.com/jargon/m/mothboar.htm#components
https://www.quora.com/What-are-the-components-of-a-system-unit
https://www.google.com/search?q=processor+images&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjaoKbZyLvbAhXCT30KHWcYAbsQ_AUICigB&biw=1280&bih=893#imgrc=SQOTNCSLxas6FM:
https://www.google.com/search?tbm=isch&sa=1&ei=lwQWW-XyGMb-rQHI_bWwDw&q=nvidia+graphics+card+1050+ti+4gb&oq=nvidia+graphics+card+1050+ti+4gb&gs_l=img.3..0i8i30k1.45372.57122.0.57381.38.29.1.7.7.0.222.2889.2j21j1.24.0....0...1c.1.64.img..6.29.2664...0j35i39k1j0i67k1j0i10i24k1j0i24k1.0.X_s_nidW4bA#imgrc=ZYZP4Irv_0JeyM:
https://www.google.com/search?biw=1280&bih=893&tbm=isch&sa=1&ei=aAMWW-bUFcnz9QOulZSwBA&q=PSU&oq=PSU&gs_l=img.3..0i67k1l2j0j0i67k1l2j0l3j0i67k1j0.512323.512636.0.513205.3.3.0.0.0.0.135.342.1j2.3.0....0...1c.1.64.img..0.3.340...35i39k1.0.Ps3qAB3Bz4I#imgrc=BlkV6qhIw5l5YM:
https://www.google.com/search?tbm=isch&q=hard+disc&chips=q:hard+disc,g_1:computer,g_1:desktop+computer&sa=X&ved=0ahUKEwjpipbIzLvbAhUYTn0KHZx0ChcQ4lYIKigB&biw=1280&bih=893&dpr=1#imgrc=U4wAxll1ekFxfM:
https://techterms.com/definition/system_unit
https://www.google.com/search?q=computer+casing&source=lnms&tbm=isch&sa=X&ved=0ahUKEwje_cajzrvbAhUDU30KHduuD3AQ_AUICigB&biw=1280&bih=893#imgrc=ZWbuzTpQBMK0OM:

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