6- Operating System

1. I think that Operating Systems are necessary in order for a computer to run effectively because they help to run software and and resources of the software more smoothely and efficiently.For example It manages the hardware and software resources of the system. In a desktop computer, these resources include such things as the processor, memory, disk space, etc. (On a cell phone, they include the keypad, the screen, the address book, the phone dialer, the battery and the network connection.)



Read more: http://wiki.answers.com/Q/Why_does_a_computer_need_an_operating_system#ixzz1szrOaWE2

2. Four Tasks Peritted by an Operating System may include:

• To control the activities of a computer system or to control the operation of a computer,
• Directs the input and output of data 
• Keeps track of files 

And controls the processing of computer programs. 
Read more: http://wiki.answers.com/Q/Tasks_of_operating_system#ixzz1szsVeKxs

3. The three main Brands of Operating Systems that i am aware of are:

• IOS
• Microsoft
• Apple Macintosh
• HP
  

4. The operating system that can manage numerous people working at the same time is a Multi-User Operation System. This works in a way that allows more than one person to be in use of the same programme or file.

5. The operating system that can manage several programs that are running at the same time  is called a Multi-tasking Operation System. This means that the programme that is being acceded on the operation system can out go many tasks or operations in fact at the same time. 

6. The three utilities that are available in the "toolbox" of common tasks that help the computer to run more efficiently are:

1.

2.

3.

7.

8.

• Controlling the engine management for a car- Operating System
• Writing a letter- application
• Backing up the system - Operation system 
• Calculating company accounts- Application
• Allocating memory to allow programs to run - Operation System 
• Writing a report- application
• Communication with a printer- Operation system

Google Chromes Operating System: