CD - Compact Disc

Compact Disc is an optical disc used to store data including video, text, audio etc. in digital form. The Data is written to the CD using an optical device known as CD Writer which can be read through a similar device known as CD Drive.
Size & Capacity
Standard CDs have a diameter of 4.7 inch, 1.2 millimeters thick, made up of polycarbonate plastic and can hold data up 700 MBs. Compact Disc are far cheaper than HDD and easy to handle.

Water treatment. Waste water treatment refers to all processes aiming at cleaning up waste water before its return in the nature or its reuse. CMD offers its Durand® worm gearboxes, its ERmaster® helical reducers and ERsun® planetary reducers as well as its Flexacier® grid couplings or Flexident® gear couplings, for the drive of pumps and decanters. Win + C: Open Cortana. Win + E: Open File Explore (Quick Action). Win + B: Highlight the notification area. Win + H: Open the share charm. Win + I: Open the setting app. Win + L: Lock the desktop and go to the lock screen. Win + M: Switch to desktop and minimize all open windows. Win + O: Lock the orientation. Win + P: Open the project the pane.

CD - Change Directory

What does cmd mean? Command Prompt (executable name: cmd.exe) is the Microsoft-supplied command-line interpreter bundled with various windows based operating systems.

Cmd Full Form In Computer Terms

Change Directory is a Disk Operating System (DOS) command used to change the directory (also known as a folder in a Computer System).
For ex. If you want to enter in to the directory 'Playlist' form d: drive, the change directory command for the same will be :-

d:> cd Playlist

Cmd Full Form In Computer Software