Digital lock using AT89C2051 tested with simulation

[ppa88]

Here is a digital lock based on the 8051 variant AT89C2051 with proteus simulation.

The basic user lock is of 5 Digits and Master Lock is of 10 digits.
The input is taken from a 4x3 Keypad and the user input is shown on a 2x16 LCD.
Pin 15 (P1.3)is assigned as output for activating and deactivating the lock. An LED is connected to that pin for testing.

The # key acts as "ENTER" key and * as "BACKSPACE" key.
The default code for activating the lock is 56712. To change it first enter 54321 and then enter the master key code of 8776934265. Then it will ask you to enter the new 5 digit key unlock code which will be stored for future.

The lock has to be opened within 3 tries else it gets blocked.

http://rapidshare.com/files/59905563/lock.rar.html

ENJOY.

[firewalker]

Is the source code available?

[MAXPAYNE]

Couldn't simulate...
Gives error "DSIM model MDS8051.DLL failed to authorize- product key not found" using proteus 7.1 SP4...
How can I solve it

[ppa88]

Try with 7.1 SP 2. It should work.

[MAXPAYNE]

from the message it seems key problem and SP4 must be better than Sp2. I am using  Mr.Phil Trevorson key.....