Introduction to System Software

1. Sanjivani Rural Education Society’s
Sanjivani College of Engineering, Kopargaon-423 603
(An Autonomous Institute, Affiliated to Savitribai Phule Pune University, Pune)
NACC ‘A’ Grade Accredited, ISO 9001:2015 Certified
Department of Computer Engineering
(NBA Accredited)
Dr. S. N. Gunjal
Assistant Professor
E-mail : gunjasanjay@sanjivani.org.in
Contact No: 91301 91301 Ext :145, 9503916876
Course- System Programming and Operating System
(CO312)
Introduction to Systems Programming, Need of
Systems Programming, Software Hierarchy, Types of software:
system software and application software,
Dr. S.N Gunjal

2. Introduction to Systems Programming
DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 2
Prerequisite Course: Computer Organization and Architecture, Operating System and
Administration, Data Structures
⮚ A System Programming is program which help to execute user’s programs effectively on a
computer system.
⮚ System Programming is used to describe the collection of technique in designing the
system Program.
⮚ System software is form a software layer between the user and computer.
⮚ System software perform two functions :
1.Translate the user need into the form computer understand.
2.Allocation of resources for program execution.
⮚Each Program in the system software called System Program.

3. Introduction to Systems Programming
DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 3
Prerequisite Course: Computer Organization and Architecture, Operating System and
Administration, Data Structures
System programs are nothing but the compilers, loaders, macro processor, operating
system,editors, Assemblers, linker,Interpreter and debugger.
⮚Computer can not understand the language without aid of system programs.
⮚ System software provides platform for application developement and execution.
⮚ Controls operations of computer hardware
⮚ System Software Consist of a variety of program that support the operation
of a computer.

4. DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 4
Foundation of System Programming

5. General Hardware Organization of Computer System

6. • Memory is a device where information is stored.
• A processor is a device that perform a sequence of operations
specified by instruction in memory.
• There are two types of processors
– Input/Output (I/O) Processor concerns with transfer of data between
memory and peripheral devices
– Central Processing Unit (CPU) concerns with the manipulation of data
stored in memory
Cont…

7. Need of Systems Programming
DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 7
⮚ System programming leads to the development of computer system software that manages
and controls the computer operations
⮚System programs provide an environment where programs can be developed and
executed.
⮚System Software provide the platform for all the application software.
⮚System software required to run the hardware parts of computer and other applications.
⮚It handle all hardware, software and network together.
⮚It convert all human instruction into machine understandable formats.

8. ⮚It manages all the basics functions such as storing the files,retrieving files and scheduling the task
etc.
⮚It make the effective execution of each program.
⮚It make the effective utilization of the computer resources.
Continue….

9. DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 9
Types of software::
⮚ Computer software is collection of programs or procedure which perform specific task.
⮚ Computer Software System is classified into two categories :
1. System program
2.Application program

10. DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 10
Sr.No System Software Application Software
01 System Software's are used for operating
the computer hardware
Application software are used by user to perform specific
task.
02 System software are installed on
computer when the operating system
installed.
Application software installed according to users
requirements
03 In general users doesn't interact with
system software because it works in
background.
In general user interact with application software’s to
perform the specific tasks.

11. DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 11
04 System software run independently . It
provide platform for running the
application software
Application software cannot run independently .They cannot
run without presence of system software.
05 Ex. of System software : compilers,
loaders, macros processor, operating system
etc.
Some example of application software are MS-
Word,Excel,Bank Management, browser,Media player etc.
06 System Programming is comprised of
writing program for
assembler,compiler,editor.
Application programming is used for development of
application such as MIS, Bank Management etc.

12. 07 Debugging is difficult. Debugging is not difficult.
08 Fault fixing is not easy but realible. Fault fixing is not easy but reliable
09 System Programming makes machine to do
work.
System Programming makes Program to do work.

13. 15/06/20 DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon
Text books & Reference Books(R) :
Text Books(T):
⮚John Donovan, “System Programming”, McGraw Hill, ISBN 978-0--07-460482-3.
⮚Dhamdhere D., "Systems Programming and Operating Systems", McGraw Hill, ISBN 0 - 07 -
463579 – 4
⮚Silberschatz, Galvin, Gagne, "Operating System Principles", 9th Edition, Wiley, ISBN 978-1-118-
06333-0
Reference Books(R):
⮚Alfred V.Aho,Monica S.Lam,Ravi Sethi, Jeffrey D. Ullman, “Compilers-Principles,Techniques
and Tools”, Pearson,ISBN:978-81-317-2101-8
⮚John R. Levine, Tony Mason, Doug Brown, “Lex and Yacc”,O’Reilly & Associates,Inc,ISBN:1-
56592-000-7
⮚Leland Beck, “System Software: An Introduction to Systems Programming”, Pearson

14. DEPARTMENT OF COMPUTER ENGINEERING, Sanjivani COE, Kopargaon 14
Thank You