3 digit door locking mechanism

.It gives more protection and used as door locking and safe locking method. Your code can enter code from the left most logic switches. There are 3 set having 4 switches . Each set for each number Lowest one for one's digit. Middle one for ten's digit. Upper one for Hundted's digit . Code series lowest logic switch in each set for MSB and upper one for LSB. Initial code 851. CODE ENTERING ----+++++------ Now unknown person will enter the code and if code is correct door opens otherwise remain close. To enter the code . Choose the digit in form of four bits by logic switches near 7 segment display. After 4 logic switches there are 3 switches. First for loading the digit serially . Second to reset it. Third as ENTER key. After loading 851 to 7 segment diplay . Press enter key. If code you enter is same as previously inputed code by 12 logic switches green LED blinks otherwise RED led remain blinking. Hint : Green led for open door RED led for close door . Lowest logic switch for MSB and highest switch for LSB.

published 11 years ago