Third week on Software and OS...

Software and Operating System

1st Session

Software drives the hardware with the data or instructions. It has 3 categories:

                                               
1. System Software
2. Application Software

3. Programming Language

Software Layers

It includes processes to link between the user and hardware.

Operating Systems

                   

                         

 It is the most important software in all computer systems. It is also called a platform program.

The functions of OS are following:

1. Starting and shutting down of a computer

2. Providing a user interface

3. Managing programs

4. Managing memory

5. Monitoring performance

6. Controlling a network

7. Configuring devices

User Interface

Two types:
1. GUI

2. Command-line interface

Utility Programs

These are used to improve the functions of a computer. OS includes some built-in UP, but most of the users buy these additionally.

Programming Languages

2nd Session

Programming language is a set of words, abbreviations and symbols that enables a programmer to communicate instructions to a computer.

- It is a tool to create & modify programs

- It is a language to communicate between user and computer

Generations of PL

1. Machine Language

2. Assembly Language

3. Procedural Language

4. Object-oriented Language

5. Natural Language

Application Software and Its Installation Procedures

3rd Session

Application Software improves four different sectors:

1. Business

2. Graphics and multimedia

3. Home, personal and educational task

4. Communications