The document discusses various types of software, including system software, application software, and software libraries. It explains the roles of operating systems and language processors, as well as different number systems such as binary, octal, decimal, and hexadecimal. Additionally, it highlights the applications of these number systems in computing and programming.

1. Welcome

2. Content:
• Software and its types.
• System Software.
• Operating system.
• Language processor.
• Application software and its
types.
• Software libraries.
• Digital Number system.
• Types of number system.

3. Software.
• It is the set of program which controls
operations of a computer system.
• Types:
a)system software.
b)application software.

4. System software.
• Software that controls internal computer
operations.
• Types:
a)Operating system.
b)Language processor.

5. Operating system.
• It is a program which acts as an interface between user
and hard ware.
• Types:
a)single user OS.
b)Multiuser OS.
c)Real time OS.
Examples: Windows, iOS, Android, Linux and etc…

6. Language Processor.
• It converts a high-level language to machine language.
Types:
a)Assembler – assembly language to machine code.
b)Interpreter – reads program line by line.
c)Compiler – reads program in one go.

7. Application software.
• It is a set of programs needed to carry out operations
for specific application.
• Types:
a) Packages – contains package of related
programs
Examples: Data base management, word
processing and etc…
b) Utilities – assists computer in maintaining its
performance.
c) Business software – it is specifically created to
business requirements.

8. Software libraries.
• It is a predefined and available to use, suit of
data.
• It is in the form of code, functions, scripts,
classes and etc…
• Examples:
a)Numpy ( Numerical python ).
b)Scipy ( scientific python ).
c)panda library.

9. Digital number system.
• We represent Various number system digitally, the commonly
used number systems are as follows,
a) Binary number system
b) Octal number system
c) Decimal number system
d) Hexadecimal number system

10. Decimal or Denary number system
• It is composed of 10 numbers or symbols.
• “ Deca “ means 10, thus it is known as
decimal number system.
• Its base is 10 i.e. 0 to 9.
• It is evolved from the fact that humans have
10 fingers.

11. Binary number system
• It is composed of only two numbers i.e 0 and 1.
• Its base is 2, 0 and 1.
• Almost every electronic device use binary number system as
every electronic circuit works with two voltage levels.

12. Octal number system
• It is composed of 8 numbers.
• Its base is 8 i.e 0 to 7.
• It is very important in digital computer works.

13. Hexadecimal number system
• It has 16 possible digit symbols.
• Its base is 16.
• It uses the digits 0 to 9 plus letters A to F.
Example: 7A1, D6, 3BF5C.

14. Application of Hexadecimal
• Hexadecimal number system are used on computers
as they are better human readable than others.
• It is used to specify memory address as it is easier to
remember compared to binary.
• It is used to represent colour codes.
• It is used in memory dumps and debugging codes.