siemprepeligroso
Newbie level 6
I just started to work on my Logic Circuit Design semester project, I decided to work on a default traffic light system...
It has to be a sequential circuit i guess...
I worked on this scenario: the total number of cycles is 8, from which 3 are RED, 2 are YELLOW and left 3 cycles are GREEN, but this is not the real o rder the real order is: R,R,R,Y,G,G,G,Y....so we have 3 red 1 yellow 3 green and the last yellow, then the cycles start from the beginning....
I finished the project on paper, but when it comes to the software (MULTISIM) to try if it works I have some problem, this is where I am stuck...
I have used 3 D-flipflops and in the and I got this equations from Karnaugh Maps:
D1: [(!A and !B) or (A and B and C)]
D2: (B and !C)
D3: [(A and !B) or (!A and B and C)]
I hope I am clear enough so you can help me, if you have any questions and suggestion pls write as soon as possible because I am running out of my time, otherwise tell me where can I find finished projects about traffic light, but they have to be simple because in the end I have also to implement them in practice with real devices.
Thanks in advance.
It has to be a sequential circuit i guess...
I worked on this scenario: the total number of cycles is 8, from which 3 are RED, 2 are YELLOW and left 3 cycles are GREEN, but this is not the real o rder the real order is: R,R,R,Y,G,G,G,Y....so we have 3 red 1 yellow 3 green and the last yellow, then the cycles start from the beginning....
I finished the project on paper, but when it comes to the software (MULTISIM) to try if it works I have some problem, this is where I am stuck...
I have used 3 D-flipflops and in the and I got this equations from Karnaugh Maps:
D1: [(!A and !B) or (A and B and C)]
D2: (B and !C)
D3: [(A and !B) or (!A and B and C)]
I hope I am clear enough so you can help me, if you have any questions and suggestion pls write as soon as possible because I am running out of my time, otherwise tell me where can I find finished projects about traffic light, but they have to be simple because in the end I have also to implement them in practice with real devices.
Thanks in advance.