This document presents a project on a password security system. It discusses why password security is important for protecting computers and personal information. It then lists the required equipment for the project such as logic gates, switches, resistors, and a breadboard. Circuit diagrams and pin diagrams are presented for the logic gates used. Applications of password security systems include doors, safes, and lockers.

1. Green University Of Bangladesh
Project Presentation
Of
Digital Logic Design
Lab
Submitted By
Syed Abdullah
(201002263)

2. Welcome to my presentation
Of
Password Security System.

3. Content
1. Why password security is important.
2. Required Equipments.
3. Pin Diagram of IC
4. Circuit Diagram.
5. Applications.

4. Why Password Security System is
Important?
Passwords provide the first line of defense against
unauthorized access to your computer and personal
information. The stronger your password, the more
protected your computer will be from hackers and
malicious software. You should maintain strong
passwords for all accounts on your computer.

5. REQUIRED EQUIPMENT
● Quad NOR Gate
● Quad XOR Gate
● Two eight position DIP switches.
● Two light emitting diodes.
● Push Button switch.
● One 9v battery.
● Two breadboard.
● Ten 10k resistors and two 470 resistors.
● Four 1N914 “switching” diodes.

6. PIN DIAGRAM OF IC
4070 quad XOR Gate
Truth Table

7. PIN DIAGRAM OF IC
4001 quad NOR Gate Truth Table

8. CIRCUIT DIAGRAM

9. HOW IT WORKS

10. APPLICATIONS
● Doors.
● Safes.
● Lockers.

11. Thank You