Answer:
OS: Operating System
The operating system performs all the basic tasks of any computer or mobile, such as memory management, file management, input and output handling, process management, etc.
Explanation:
<em>OS</em><em> </em><em>stands</em><em> </em><em>f</em><em>or</em><em> </em><em>Operating</em><em> </em><em>System</em><em>.</em><em>.</em><em>.</em><em>…</em><em>…</em><em>…</em><em>…</em><em>…</em><em>…</em><em>…</em>
A good website to learn coding is called Lynda.com. It costs money but its well worth it!
4. application programs
by using proper indentation
