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PROJECT ON COMPUTER SALES AND SERVICE SYSTEM

INTRODUCTION

The Computer Sales and service System is a software used to register about

parts of computer purchased by customers, complaint and customer feedback.

Admin can take the report also if they want them in future.

OBJECTIVES OF THE PROJECT

The objective of this project is to let the students apply the programming
knowledge into a real- world situation/problem and exposed the students how
programming skills helps in developing a good software.

• Write programs utilizing modern software tools.

• Apply object oriented programming principles effectively when developing small

to medium sized projects.

• Write effective procedural code to solve small to medium sized problems.

• Students will demonstrate a breadth of knowledge in computer science, as

exemplified in the areas of systems, theory and software development.

• Students will demonstrate ability to conduct a research or applied Computer

Science project, requiring writing and presentation skills which exemplify
scholarly style in computer science.
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PROPOSED SYSTEM

Today one cannot afford to rely on the fallible human beings of be really wants to

stand against today’s merciless competition where not to wise saying “to err is

human” no longer valid, it’s outdated to rationalize your mistake. So, to keep pace with

time, to bring about the best result without malfunctioning and greater efficiency so to

replace the unending heaps of flies with a much sophisticated hard disk of the

computer.

One has to use the data management software. Software has been an ascent in

atomization various organisations. Many software products working are now in markets,

which have helped in making the organizations work easier and efficiently. Data

management initially had to maintain a lot of ledgers and a lot of paper work has to be

done but now software product on this organization has made their work faster and

easier. Now only this software has to be loaded on the computer and work can be done.

This prevents a lot of time and money. The work becomes fully automated and

any information regarding the organization can be obtained by clicking the button.

Moreover, now it’s an age of computers of and automating such an organization gives

the better look.

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SYSTEM DEVELOPMENT LIFE CYCLE (SDLC)

The systems development life cycle is a project management technique that

divides complex projects into smaller, more easily managed segments or phases.
Segmenting projects allows managers to verify the successful completion of project
phases before allocating resources to subsequent phases.
Software development projects typically include initiation, planning, design,
development, testing, implementation, and maintenance phases. However, the phases
may be divided differently depending on the organization involved.
For example, initial project activities might be designated as request,
requirements-definition, and planning phases, or initiation, concept-development, and
planning phases. End users of the system under development should be involved in
reviewing the output of each phase to ensure the system is being built to deliver the
needed functionality.
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PHASES OF SYSTEM DEVELOPMENT LIFE CYCLE

INITIATION PHASE

The Initiation Phase begins when a business sponsor identifies a need or an

opportunity.

The purpose of the Initiation Phase is to:

• Identify and validate an opportunity to improve business accomplishments of the

organization or a deficiency related to a business need.
• Identify significant assumptions and constraints on solutions to that need.
• Recommend the exploration of alternative concepts and methods to satisfy the
need including questioning the need for technology, i.e., will a change in the
business process offer a solution?
• Assure executive business and executive technical sponsorship. The Sponsor
designates a Project Manager and the business need is documented in a
Concept Proposal. The Concept Proposal includes information about the
business process and the relationship to the Agency/Organization.
• Infrastructure and the Strategic Plan. A successful Concept Proposal results in a
Project Management Charter which outlines the authority of the project manager
to begin
the project.

Careful oversight is required to ensure projects support strategic business

objectives and resources are effectively implemented into an organization's enterprise
architecture. The initiation phase begins when an opportunity to add, improve, or correct
a system is identified and formally requested through the presentation of a business
case. The business case should, at a minimum, describe a proposal’s purpose, identify
expected benefits, and explain how the proposed system supports one of the
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organization’s business strategies. The business case should also identify alternative
solutions and detail as many informational, functional, and network requirements as
possible.
SYSTEM CONCEPT DEVELOPMENT PHASE

The System Concept Development Phase begins after a business need or opportunity
is validated by the Agency/Organization Program Leadership and the
Agency/Organization CIO.

The purpose of the System Concept Development Phase is to:

• Determine the feasibility and appropriateness of the alternatives.

• Identify system interfaces.
• Identify basic functional and data requirements to satisfy the business need.
• Establish system boundaries; identify goals, objectives, critical success factors,
and performance measures.
• Evaluate costs and benefits of alternative approaches to satisfy the basic
functional requirements
• Assess project risks
• Identify and initiate risk mitigation actions, andDevelop high-level technical
architecture, process models, data models, and a concept of operations. This
phase explores potential technical solutions within the context of the business
need.
• It may include several trade-off decisions such as the decision to use COTS
software products as opposed to developing custom software or reusing software
components, or the decision to use an incremental delivery versus a complete,
onetime deployment.
• Construction of executable prototypes is encouraged to evaluate technology to
support the business process. The System Boundary Document serves as an
important reference document to support the Information Technology Project
Request (ITPR) process.
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• The ITPR must be approved by the State CIO before the project can move
forward.

PICTORIAL REPRESENTATION OF SDLC:

PLANNING PHASE

The planning phase is the most critical step in completing development,

acquisition, and maintenance projects. Careful planning, particularly in the early stages
of a project, is necessary to coordinate activities and manage project risks effectively.
The depth and formality of project plans should be commensurate with the
characteristics and risks of a given project. Project plans refine the information gathered
during the initiation phase by further identifying the specific activities and resources
required to complete a project.
A critical part of a project manager’ sjob is to coordinate discussions between
user, audit, security, design, development, and network personnel to identify and
document as many functional, security, and network requirements as possible. During
this phase, a plan is developed that documents the approach to be used and includes a
discussion of methods, tools, tasks, resources, project schedules, and user input.
Personnel assignments, costs, project schedule, and target dates are established.
A Project Management Plan is created with components related to acquisition
planning, configuration management planning, quality assurance planning, concept of
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operations, system security, verification and validation, and systems engineering
management planning.

REQUIREMENTS ANALYSIS PHASE

This phase formally defines the detailed functional user requirements using high-
level requirements identified in the Initiation, System Concept, and Planning phases. It
also delineates the requirements in terms of data, system performance, security, and
maintainability requirements for the system. The requirements are defined in this phase
to alevel of detail sufficient for systems design to proceed. They need to be measurable,
testable, and relate to the business need or opportunity identified in the Initiation Phase.
The requirements that will be used to determine acceptance of the system are captured
in the Test and Evaluation MasterPlan.

The purposes of this phase are to:

• Further define and refine the functional and data requirements and document
them in the Requirements Document,
• Complete business process reengineering of the functions to be supported (i.e.,
verify what information drives the business process, what information is
generated, who generates it, where does the information go, and who processes
it),
• Develop detailed data and process models (system inputs, outputs, and the
process.
• Develop the test and evaluation requirements that will be used to determine
acceptable system performance.

DESIGN PHASE

The design phase involves converting the informational, functional, and network
requirements identified during the initiation and planning phases into unified design
specifications that developers use to scriptprograms during the development phase.
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Program designs are c onstructed in various ways. Using a top-down approach,
designers first identify and link majorprogram components and interfaces, then expand
design layouts as they identify and link smaller subsystems and connections. Using a
bottom-up approach, designers first identify and link minor program components and
interfaces, then expand design layouts as they identify and link larger systems and
connections. Contemporary design techniques often use prototyping tools that build
mock-up designs of items such as application screens, database layouts, and system
architectures. End users, designers, developers, database managers, and network
administrators should review and refine the prototyped designs in an iterative process
until they agree on an acceptable design. Audit, security, and quality assurance
personnel should be involved in the review and approval process. During this phase, the
system is designed to satisfy the functional requirements identified in the previous
phase. Since problems in the design phase could be very expensive to solve in the later
stage of the software development, a variety of elements are considered in the design
to mitigate risk. These include:

• Identifying potential risks and defining mitigating design features.

• Performing a security risk assessment.
• Developing a conversion plan to migrate current data to the new system.
• Determining the operating environment.
• Defining major subsystems and their inputs and outputs.
• Allocating processes to resources.
• Preparing detailed logic specifications for each software module. The result is a
draft System Design Document which captures the preliminary design for the
system.
• Everything requiring user input or approval is documented and reviewed by the
user. Once these documents have been approved by the Agency CIO and
Business Sponsor, the final System Design Document is created to serve as the
Critical/Detailed Design for the system.
• This document receives a rigorous review byAgency technical and functional
representatives to ensure that it satisfies the business requirements. Concurrent
with the development of the system design, the Agency Project Manager begins
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development of the Implementation Plan, Operations and Maintenance Manual,
and the Training Plan.

DEVELOPMENT PHASE

The development phase involves converting design specifications into

executable programs. Effective development standards include requirements that
programmers and other project participants discuss design specifications before
programming begins. The procedures help ensure programmers clearly understand
program designs and functional requirements. Programmers use various techniques
to develop computer programs. The large transaction oriented programs associated
with financial institutions have traditionally been developed using procedural
programming techniques. Procedural programming involves the line-by-line scripting
of logical instructions that are combined to form a program. Effective completion of
the previous stages is a key factor in the success of the Development phase. The
Development phase consists of:

• Translating the detailed requirements and design into system components.

• Testing individual elements (units) for usability.
• Preparing for integration and testing of the IT system.

INTEGRATION AND TEST PHASE

• Subsystem integration, system, security, and user acceptance testing is

conducted during the integration and test phase. The user, with those
responsible for quality assurance, validates that the functional requirements, as
defined in the functional requirements document, are satisfied by the developed
or modified system. OIT Security staff assess the system security and issue a
security certification and accreditation prior to installation/implementation.
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Multiple levels of testing are performed, including:

• Testing at the development facility by the contractor and possibly supported by

end users

• Testing as a deployed system with end users working together with contract
personnel

• Operational testing by the end user alone performing all functions. Requirements
are traced throughout testing,a final Independent Verification & Validation
evaluation is performed and all documentation is reviewedand accepted prior to
acceptance of the system.

IMPLEMENTATION PHASE

This phase is initiated after the system has been tested and accepted by the
user. In this phase, the system is installed to support the intended business functions.
System performance is compared to performance objectives established during the
planning phase. Implementation includes user notification, user training, installation of
hardware, installation of software onto production computers, and integration of the
system into daily work processes. This phase continues until the system is operating in
production in accordance with the defined userrequirements.

OPERATIONS AND MAINTENANCE PHASE

The system operation is ongoing. The system is monitored for continued

performance in accordance with user requirements and needed system modifications
are incorporated. Operations continue as long as the system can be effectively adapted
to respond to the organization’s needs. When modifications or changes are identified,
the system may reenter the planning phase.
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The purpose of this phase is to:

• Operate, maintain, and enhance the system.
• Certify that the system can process sensitive information.
• Conduct periodic assessments of the system to ensure the functional
requirements continue to be satisfied.
• Determine when the system needs to be modernized, replaced, or retired

SOURCE CODE

import mysql.connector as sql

conn=sql.connect(host="localhost",user="root",passwd="manager",database="test")
if conn.is_connected():
print('successfully connected')
c1=conn.cursor()
c1.execute('use test')
c1=conn.cursor()
print('')
print('')
print(' COMPUTER SALES AND SERVICE SYSTEM')
print('')
print('')
print('1.to buy computer parts')
print('2.to ask for computer service')
print('3.problem with our sales or service')
print('4.to see various comments and ratings on our software')
print('5.exit')
print('')
choice=int(input('enter your choice:'))
if choice==1:
print('')
print(' COMPUTER SALES')
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print('')
cust_name=str(input('please enter your name:'))
phno=int(input('please enter your phone number:'))
email=str(input('please enter your e-mail id:'))
address=str(input('please enter your address:'))
part=str(input('please enter the type of computer part you need:'))
insert="insert into 1_comp_sales values('"+cust_name+"',"+str(phno)
+",'"+email+"','"+address+"','"+part+"')"
c1.execute(insert)
conn.commit()
print('')
print(' RATING AND COMMENT')
rating=int(input('please enter the ratings out of 10 for our software :'))
comment=str(input('please comment on our software :'))
print('')
print('')
print('')
if rating<5:
print('sorry for our poor performance next time we will be good enough')
else:
print('thanks for rating us next time we will be even better')
insert1="insert into rating_comment values("+str(phno)
+",'"+address+"','"+email+"',"+str(rating)+",'"+comment+"')"
c1.execute(insert1)
conn.commit()
print('')
print(' thank you dear customer',cust_name,'your computer part Will be
delivered to you shortly and you can pay cash to the delivery boy')

if choice==2:
print('')
print(' COMPUTER SERVICE')
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print('')
name=str(input('please enter your name:'))
phno=int(input('please enter your phone number:'))
email=str(input('please enter your e-mail id:'))
address=str(input('please enter your residential address:'))
service=str(input('please enter the service you want:'))

insert="insert into 1_comp_service values('"+name+"',"+str(phno)

+",'"+email+"','"+address+"','"+service+"')"
c1.execute(insert)
conn.commit()
print('')
print('')
print(' RATINGS AND COMMENT')
rating=int(input('please enter the ratings out of 10 :'))
comment=str(input('please comment on our software :'))
print('')
if rating<5:
print('sorry for our poor performance next time we will be good enough')
else:
print('thanks for rating us next time we will be even better')

insert1="insert into rating_comment values("+str(phno)

+",'"+email+"','"+address+"',"+str(rating)+",'"+comment+"')"
c1.execute(insert1)
conn.commit()
print('')
print('')
print(' thank you dear custmer',name,'the service you asked will be done to
your computer parts shortly and cash on delivery')
if choice==3:
print('')
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print(' PROBLEM WITH SOFTWARE')
print('')
print('')
print('1.problem with sales')
print('2.problem with service')
print('3.problem with dor delivary boy or service boy')
print('')
a=int(input('please enter your choice:'))
print('')
if a==1:
cus_name=str(input('please enter your name:'))
phno1=int(input('please enter your phone no:'))
sa_name=str(input('please enter the name of the sales boy whom you dealed
with:'))
prob=str(input('please enter your problem:'))
print('')
print(' sorry for the problem sire/madam we will ensure that this does not
happen next time thank you')
insert2="insert into sales_prob
values('"+cus_name+"',"+str(phno1)+",'"+sa_name+"','"+prob+"')"
c1.execute(insert2)
conn.commit()
if a==2:
cus_name=str(input('please enter your name:'))
phno1=int(input('please enter your phone no:'))
se_name=str(input('please enter the name of the service boy you dealed
with:'))
prob=str(input('please enter the problem you face:'))
print('')
print(' sorry for the problem sire/madam we will ensure that this does not
happen next time . thank you')
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insert2="insert into servive_prob
values('"+cus_name+"',"+str(phno1)+",'"+se_name+"','"+prob+"')"
c1.execute(insert2)
conn.commit
if a==3:
cus_name=str(input('please enter your name:'))
phno1=int(input('please enter your phone no:'))
name1=str(input('please enter the boys name:'))
prob=str(input('please enter the problem you have faced'))
insert2="insert into sb_prob
values('"+cus_name+"',"+str(phno1)+",'"+name1+"','"+prob+"')"
c1.execute(insert2)
conn.commit()
print('')
print(' sorry for the promlem sire/madame we see to it that the boy gets
penalized severely.thank you')
if choice==4:
l="select * from rating_comment"
c1.execute(l)
a= c1.fetchone()
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OUTPUT
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HARDWARE AND SOFTWARE REQUIREMENTS

I.OPERATING SYSTEM : WINDOWS 7 AND ABOVE

II. PROCESSOR : PENTIUM(ANY) OR AMD

ATHALON(3800+- 4200+ DUAL CORE)

III. MOTHERBOARD : 1.845 OR 915,995 FOR PENTIUM 0R MSI

K9MM-V VIA K8M800+8237R PLUS CHIPSET

FOR AMD ATHALON

IV. RAM : 512MB+

V. Hard disk : SATA 40 GB OR ABOVE

VI. CD/DVD r/w multi drive combo: (If back up required)

VII. FLOPPY DRIVE 1.44 MB : (If Backup required)

VIII. MONITOR 14.1 or 15 -17 inch

IX. Key board and mouse

X. Printer : (if print is required – [Hard copy])

SOFTWARE REQUIREMENTS:

• Windows OS
• Python

.
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BIBLIOGRAPHY

• Computer science With Python - Class XI By : Sumita Arora

• Website: https://www.w3resource.com
• https://en.wikipedia.org/

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