The document describes a proposed Laptop Selection System that would help users choose the best laptop to purchase. The system would use rule-based techniques to analyze user-selected preference criteria and recommend suitable laptop options. It would have separate interfaces for administrators to manage laptop and criteria information, and for users to provide their criteria and receive recommendations. The system aims to address the challenges of selecting a laptop by simplifying the process and matching users with laptops that meet their needs.

1. LAPTOP SELECTION SYSTEM
By: NUR ATHIRAH SYAHIRAH BT AZHAR
Matric No: BTAL15041354
Degree of Science Computer(Software Developer)

2. INTRODUCTION
Laptop is one of the important device that most of the people use nowadays.
Since then the invention of laptops have improved dramatically.
The problems is where there’s wide a wide assortment of features, sizes, and prices,
which makes choosing the right laptop is a challenge.
There are a lot of important factors and elements that need to be consider carefully
before purchasing laptop.
 Therefore, Laptop Selection System is proposed to overcome all the problems that
might occur.
Rule-based technique will be used and implemented in this Laptop Selection System.
The system will analyses the selected preference criteria from the user and will select
the right laptop by applying rule-based method.

3. OBJECTIVE
There are three main objectives :
• I.To design a system that using Rule-based to help the potential buyers
to choose the best laptop to buy.
• To implement a system that can respond to online suggestion.
• To recommend a good choice from the system to the user.

4. SYSTEM SCOPE
This system will used by the two main actors which is the admin of this system and the customer as the
users.
(1) User (Admin) :-
• Open the user criteria test
• Access the questionnaire
• Add laptop, delete laptop, update laptop
• Update price.
• Manage profile
(2) User (Guest) :-
• Manage profile
• Register(if not register yet)
• Login into system
• Select the laptop requirement
• See their laptop suggestion result
(3) System :-
The system will generate the result according to the user’s sub-criteria preferences.

5. METHODOLOGY
• The system development life cycle (SLDC) will be used :
Iterative and Incremental Development Model

6. Context Diagram

7. • Two main users involve :
-Admin
-User
• Shows the main data flow that involve with this two users.
• All users are required to login to the system as basic step in order to use this
system.

8. Data Flow Diagram Level 0

9. • Represents the graphical flow of the data in the system.
• In DFD, processes connect with an entity and data store which allows data
flow an external data source or an internal data source.
• The figure above shows the overall system in one diagram.
• Every function of the system will interact with their data store which
contains tables in the database in order to complete their function.

10. Data Flow Diagram Level 1
(Manage Laptop)

11. • The figure above shows the DFD level 1 for admin to add, update, delete
and view the laptop information.
• In this function, only admin are able to add, update and delete laptop
information in the system.
• The update of the laptop information will be save on the data store laptop
file and can be view by all user.

12. Data Flow Diagram Level 1
(Manage Criteria Preference)

13. • The figure above shows the DFD level 1 for admin to add, update, delete
and view the criteria information.
• In this function, only admin are able to add, update and delete criteria
information in the system.
• The update of the criteria information will be save on the data store criteria
file and can be view by all user.

14. Entity Relation Diagram (ERD)

15. • The figure above shows the ERD of Laptop Selection System.
• The ERD shows it using the derive table, derivation are used for making a
relationship between two or more main table, it will have only record of
foreign key from the main table.
• Transmission of data should be logical by database normalization.

16. Framework

17. • The figure above shows the framework of Laptop Selection System.
• Framework is designed to understand the process happened in the system.
• In order to access the system, user first must be needed to register before
proceeding into the login page and accessing the system.
• After succeed login in, user can choose criteria that given in the system.
• Then the choice from user will be select by using Rule-based method.
• User will review all the possible result from the criteria that chosen.
• Admin will be able to manage the laptop and criteria.
• Then all the data will be saved in the database.
• Admin can also review the report from the system.
• Therefore, the description of the laptop must be in database of the system
so that user can review the details from what they choose.

18. INTERFACE
To proof the concept of the Laptop Selection System that I proposed,
I display the interface of the system that shows the flow of the system.

19. HOMEPAGE FOR ADMIN

20. PROFILE ADMIN INTERFACE
• Figure above shows screenshot of the interface admin profile. The system
displays admin profile. Admin can update their profile at that page.

21. MANAGE LAPTOP INTERFACE FOR ADMIN
• Figure above shows screenshot of the interface manage laptop for admin.
• The system let the admin to view, add, update and delete any laptop in the system.

22. MANAGE CRITERIA INTERFACE FOR ADMIN
• Figure above shows screenshot of the interface manage admin for admin.
• The system let the admin to view, add, update and delete any criteria in the system.

23. HOMEPAGE FOR USER

24. PROFILE ADMIN INTERFACE
• Figure above shows screenshot of the interface admin profile. The system
displays admin profile. Admin can update their profile at that page.

25. SELECTION INTERFACE FOR USER

26. • Figure above shows screenshot of the selection interface that user have to
fill.
• User are required to choose all the selection in this system.
• The selection are included by laptop brand, price, usage, screen size and
memory.

27. RESULT INTERFACE FOR USER

28. • Figure above shows screenshot of the result interface from user selection in
this system.
• The result gets from the Rule-based that selected from the selection by user.
• The interface display the image of the laptop and their details.

29. Solution Complexity

30. 2.4 References
• •https://fieldguide.gizmodo.com/how-to-choose-your-next-laptop-1710016570
• •https://www.sciencedirect.com/science/article/abs/pii/S0377221701002612
• •http://www2.hw.ac.uk/sml/postgraduate/downloads/dissertations/dissertationguide.pdf
• •https://www.business2community.com/business-intelligence/step-step-guide-scope-new-erp-
system-0935881
• •http://www.ganttchart.com/examples.html
• •http://www.lappylist.com/
• •https://www.hindawi.com/journals/ads/2016/8963214/
• •https://www.sciencedirect.com/science/article/pii/S030504830500112X
•