Elementary Statistics and Computer Application

Software

 
• A set of instructions that tells the computer what to do.
Two types of software
Systems software

• System software is computer software designed to operate the computer hardware and to provide and maintain a platform for running application software.
Applications Software

• Application software is computer software designed to help the user perform a particular task. Such programs are also called software applications, applications or apps. Typical examples are word processors, spreadsheets, media players and database applications.
Operating system

• An operating system (OS) is an interface between hardware and user, which is responsible for the management and coordination of activities and the sharing of the resources of a computer, that acts as a host for computing applications run on the machine. One of the purposes of an operating system is to handle the resource allocation and access protection of the hardware.
Ms-dos

• MS-DOS is the most well known operating system. MS-DOS was created in 1981 when it was used on an IBM PC. DOS, as with any operating system, controls computer activity. It manages operations such as data flow, display, data entry amongst other various elements that make up a system.
• The role of DOS is to interpret commands that the user enters via the keyboard.
These commands allow the following tasks to be executed:

• File and folder management
• Disk upgrades
• Hardware configuration
• Memory optimisation
• Program execution