15-06-2012, 04:31 PM
Microcontroller Based Digital Code Lock
Digital Code Lock.ppt (Size: 2.1 MB / Downloads: 99)
Why do we need Microprocessors/controllers?
The microprocessor is the core of computer systems.
Nowadays most of communication, digital entertainment, portable devices, are controlled by them.
Invent of microcontroller
This is an ONE chip true computer.
It is optimized for a specified application.
It consist all the features of a microprocessor also has the features to built a complete computer.
The first 8 bit microcontroller, 8048 was built by INTEL in 1976 with a view to control general task.
Many companys such as intel, phillips, Dallas and Atmel corporation built many series of microcontrollers whith change in configuration of ram,rom, I/O pins, timer, interrupt, number of timers etc.
Digital code lock system
8 bit microcontroller AT89C2051
2Kbytes of ROM for the program memory
The password is stored in the EPROM
Using Keypad we can entered the password
If password is right then relay gets on otherwise alarm switched on.
This system uses a programmable microcontroller which is programmed for 3 different functionalities.
Unlock the door by matching the security code entered by the user.
Allows to set our own security code.
In an emergency, the system can be unlocked by pressing the emergency button from inside.
Conclusion
Accomplishment:
Board design which is pact and simple.
The invasive design gives the prototype model to use easily and can be implemented to make it to work with cell phone to open the lock remotely.
Furthermore use of AT89C2051 give us flexibility to work around with other components in a cost effective way.
Ethical Consideration:
Created a device that is user friendly
Eliminate the risk of PCB board replaced visible wire usage.
Fixed connections on the board with pinheads
Digital Code Lock.ppt (Size: 2.1 MB / Downloads: 99)
Why do we need Microprocessors/controllers?
The microprocessor is the core of computer systems.
Nowadays most of communication, digital entertainment, portable devices, are controlled by them.
Invent of microcontroller
This is an ONE chip true computer.
It is optimized for a specified application.
It consist all the features of a microprocessor also has the features to built a complete computer.
The first 8 bit microcontroller, 8048 was built by INTEL in 1976 with a view to control general task.
Many companys such as intel, phillips, Dallas and Atmel corporation built many series of microcontrollers whith change in configuration of ram,rom, I/O pins, timer, interrupt, number of timers etc.
Digital code lock system
8 bit microcontroller AT89C2051
2Kbytes of ROM for the program memory
The password is stored in the EPROM
Using Keypad we can entered the password
If password is right then relay gets on otherwise alarm switched on.
This system uses a programmable microcontroller which is programmed for 3 different functionalities.
Unlock the door by matching the security code entered by the user.
Allows to set our own security code.
In an emergency, the system can be unlocked by pressing the emergency button from inside.
Conclusion
Accomplishment:
Board design which is pact and simple.
The invasive design gives the prototype model to use easily and can be implemented to make it to work with cell phone to open the lock remotely.
Furthermore use of AT89C2051 give us flexibility to work around with other components in a cost effective way.
Ethical Consideration:
Created a device that is user friendly
Eliminate the risk of PCB board replaced visible wire usage.
Fixed connections on the board with pinheads