INTRODUCTION OF SOFTWARE
A computer software is a collection of programs and a program consists of the number of ordered instructions which written by different types of programming languages, such as (C, C++, Java, Python, etc.)
TYPES OF SOFTWARE
1. System software
2. Application software
1. SYSTEM SOFTWARE
A system software is responsible to perform different types of tasks, therefore, its large in size and complex to develop than compare of application software.
EXAMPLES
A. OS (Operating system)
B. Interpreter and compiler
C. Assembler (Convert assembly code in machine code)
A. OPERATING SYSTEM
Operating systems are primary requirement of every computer system and its a base of all other application programs.
TYPES OF OPERATING SYSTEM
1. Client Side Operating System: These types of operating system mostly used to perform different personal and business tasks.
EXAMPLES
Microsoft DOS, Window 98, Window XP, window 7, window 8
2. Server Side Operating System: These types of operating system store at server side and perform the complex task as compare of a client-side OS.
EXAMPLES
Window NT, Window ME, Microsoft Server 2000, Microsoft server 2005, 2008, Linux, Unix.
3. Single User Operating System: These types of operating system allow only one user to work at one time.
EXAMPLES
Ms DOS, Window XP, window 7, etc.
4. Multi-User Operating System: In these types of operating system multiple users can work simultaneously.
EXAMPLES
Linux, Unix, Microsoft server 2000, etc.
5. Single Task Operating: In these types of operating system a user can perform justsingle task.
EXAMPLES
Microsoft DOS
6. Multi-Task Operating System: in these types of operating system a single user can perform multiple tasks simultaneously.
EXAMPLES
Window XP, Window 7, Window 8, etc.
B. COMPILER AND INTERPRETER
Compiler and interpreter both are used to convert a high language’s program in machine code (binary code)
Example of binary code (10011, 101100, etc.)
Number System
Decimal number system
0 – 9
Binary Number System
Radix or base 2
0 - 1
Octal Number System
Radix or base 8
0 – 7
Hexadecimal Number
Radix or base 16
0 - 9
A = 10
B = 11
C = 12
D = 13
E = 14
F = 15
C. ASSEMBLER
A slightly more human readable form of machine code is called assembly language and a program called an assembler is used to convert the assembly notations into machine code. Higher level languages like C or C++ are converted into machine code using a compiler.
These types of program small in size than compare of system software and these types of programs prepared to perform a particular task.
Word Microsoft office
2. Antivirus
3. Tally, busy, etc.
Microsoft Office
1. Microsoft Word
2. Microsoft Excel
3. Microsoft PowerPoint
4. Microsoft Access.
5. Microsoft Frontpage.
2. Microsoft Excel
3. Microsoft PowerPoint
4. Microsoft Access.
5. Microsoft Frontpage.
FILE SYSTEM
In several types of operating system data store in files and files can be sstored in a folder. A folder is a container that can be used to contain several types of files and other folders.
A file or folder cannot create with the following symbols.
\ / : * ? < > |
A file or folder cannot create with the following symbols.
\ / : * ? < > |
PRACTICE QUESTIONS
1. Which program is used to convert assembly program to machine code?
a) Compiler
b) Assembler
c) Interpreter
d) All of the above
Ans. B
2. Which language is an example of low-level programming language?
a) Machine language
b) Assembly language
c) C language
d) Both A and B
Ans. D
3. Identify single task operating system
a) Window XP
b) Microsoft DOS
c) Window 7
d) UNIX
Ans. B
Notes: Microsoft DOS is an example of single task and single user, CUI (Character user interface) based operating system.
4. Identify single-user operating system
a) Window XP
b) Microsoft DOS
c) Window 7
d) All of the above
Ans. d
5. Identify multi-user operating system
a) Unix, Linux
b) Microsoft server 2000
c) Window NT
d) All of the above
Ans. D
Notes: the all above operating systems (Unix, Linux, Microsoft server 2000 and window NT) are
examples of multi-task and multi-user operating system.
6. Identify the example of system software
a) Operating system
b) Microsoft Word
c) Antivirus
d) All of the above
Ans. a
7. Which program is also known as word processor
a) Notepad
b) Microsoft Excel
c) Microsoft Word
d) Microsoft Powerpoint
Ans. C
8. Which program is also known as Spreadsheet
a) Notepad
b) Microsoft Excel
c) Microsoft Word
d) Microsoft Powerpoint
Ans. B
9. In which program slide presentation are used?
a) Notepad
b) Microsoft excel
c) Microsoft word
d) Microsoft powerpoint
Ans. D
10. Which symbol can insert as file or folder name
a) ?
b) >
c) /
d) &
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