it gives basic knowledge about the system software of computers.it tells of the types of system software.

1. Presenter:
Priyanshi Joshi
MBA(FA)

2.  Introduction
 What is computer and computer software?
 Types of computer software.
 System software
 System management programs
 System development program

3. The technology has driven the world to the
next level. And the technology is nothing but
the computerization. The computerization is
now the need of everyone whether a large
system or an individual. They are now fully
depend upon the computers for every job,
whatsoever it is.

4. A computer is a system of various devices that works through
electricity. It follows a certain mechanism that takes input from
the user, processes the given input and generates output in the
form of useful information.
All computer system consist of two major
components,viz,hardware and software.
Hardware refers to a physical equipments that are necessary
for performing various operations such as reading and processing
data,storing results etc.
Software refers to a set of computer programs that are
required to enable the hardware to work and perform these
operations effectively.
Hence computer softwares are the set of programs,procedures and
associated documents like flowcharts, manuals etc. describing the
programs and how they are to be used.

5. System
Management
Program
System
Development
Program
System
software
Standard
Application
Programs
Unique
Application
Programs
Application
software

6. Application software includes a variety of
programs that are designed to meet the
information processing needs of end
users.They can be broadly classified into Two
groups:-
1.Standard Application Programs
2.Unique Application Programs

7.  System software consists of many different
programs that manage and support different
tasks. The system software not only controls
the hardware functions but also enables the
hardware to interact with the application
software as well as the users.
 There are two groups of system software:-
1.system management programs,
2.system development programs.

8.  System management programs are those programs
that are meant for operating the hardware system
and managing their resources effectively.
 They minimize the human intervention during
processing and aid in minimizing the productivity
of a computer system.
 System management program includes :-
1.Operating system
2.Utility programs
3.Device drivers.

9.  Operating System:
Provides an interface between the
computer and the user and helps in
implementing the application programs in the
figure(next slide).Major functions are :-
a) Scheduling and execution of all process.
b) Allocation and management of main memory
and other storage areas to the program
c) Interpretation of commands and
instructions.etc.

10. User interface
Program
interface
Hardware
interface
User
Application Program
Operating System
Hardware

11.  Utility programs:
utility programs enable an operating system to
perform some additional tasks,such as searching and
printing the files and scanning the viruses etc.
utility programs are added to tan operating system to
perform many different tasks,that include:
a) Search and replace
b) Print
c) Disk defragement
d) Virus scanner
e) Backup of files and folders
f) Data recovery
g) Encryption
h) System profiler

12.  Device drivers:
A computer system is connected with a
multiple I/O devices ,so that it can
communicate with the end user. In order to
interact with the I/O devices it needs special
software called device driver. It acts as a
translator between the I/O devices and the
computer.

13.  System development program also known as “programming
software” allow the users to develop programs in different
languages.
 The process of developing and executing a program involves the
following tasks:
i. Debugging the program
ii. Linking the various variables and objects with the libraries files
iii. Translating the code from one language to another
iv. Running the machine code to perform the desired task.
In order to carry out these tasks, one need the following
development tools:
1. Language translators
2. Linkers
3. Debuggers
4. Editors

14.  Language translators:
It is used to convert the program code
written in one language to the another
language.
Compiler, interpreter and assembler are
the most common examples of language
translators.

15.  Linkers:
Linker arranges the object code of all the
modules that have been generated by the
language translator into a single program.
Linker also includes the links of various
objects, which are defined in the runtime
libraries.

16.  Debuggers:
It is used to detect the errors and bugs present in the
programs. It locates the position of the errors in the
program code with the help of the Instruction Set
Simulator(ISS) technique, that is capable of stopping
the execution of a program at the point where an
erroneous statement is encountered.
In order to debug the program, a debugger helps us
to perform the following task:
1. Step by step execution of a program
2. Back tracking for checking the previous steps
3. Stopping the execution of the program until the errors
are corrected.

17.  Editors:
It is a special program that allows the user to work with the text
in the computer system.
It is used for the documentation purposes and enables us to edit
the information present in an existing document or a file.
It enables us to perform the various editing operations like
copy,cut,paste etc.
The editors are divided into the following categories:-
i. Text editor
ii. Digital audio editor
iii. Graphics editor
iv. Binary file editor
v. HTML editor
vi. Source code editor.