In a research facility only 8 people are authorized to enter. Each person is giv

Question

In a research facility only 8 people are authorized to enter. Each person is given a secret code of 3 digits which is required at the time of entry to the facility. A person while entering presses a button and the unit prompts the person to enter the code. This code is verified by the unit and the person is allowed to
enter only if the correct code is entered. Only 1 attempt is allowed and if a wrong code is entered the unit raises an alarm by flashing a warning lamp for 5 secs. The name of each person who is inside the facility is displayed in the order they entered in a round robin fashion

note/ 1-the above system using MicroTRAK/51-C2 Kit

2-there is a calaulation concerns the timer you can just do the programming for it without putting the calculation with the code if you want to

3- in this problem there are 4 main topics to use in 8051 assemply language in order to solve it which are :

a- the timer programming , b- the keypad programming ,c- the (LCD) ,d- the inturbutions

Explanation / Answer

given,research facility only 8 people are authorized to enter

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