I icefire91 New Member Jun 23, 2010 #1 Hi i am testing my 74ls193 and i have it preset to 9. when it count down the numbers are jumping around. Example from 9 to 7 to 0 to 1. Can you guys pls help me.
Hi i am testing my 74ls193 and i have it preset to 9. when it count down the numbers are jumping around. Example from 9 to 7 to 0 to 1. Can you guys pls help me.
crutschow Well-Known Member Most Helpful Member Jun 23, 2010 #2 Not without seeing your circuit diagram.
crutschow Well-Known Member Most Helpful Member Jun 23, 2010 #4 I don't have the connection diagram for your display, but I suspect you may not have that correctly connected to the counter. I'd verify that first.
I don't have the connection diagram for your display, but I suspect you may not have that correctly connected to the counter. I'd verify that first.
Mikebits Well-Known Member Jun 23, 2010 #6 how are you providing the clock for the counter? Maybe you having switch bounce.
I icefire91 New Member Jun 23, 2010 #7 I am currently using a switch for the clock. A 3 way switch. One connected to live and the other to ground and the middle one into the DOWN.
I am currently using a switch for the clock. A 3 way switch. One connected to live and the other to ground and the middle one into the DOWN.
Reloadron Well-Known Member Most Helpful Member Jun 23, 2010 #8 Then your problem is likely what Mikebits mentioned. You have switch bounce. That is why the count is random and erratic. Ron
Then your problem is likely what Mikebits mentioned. You have switch bounce. That is why the count is random and erratic. Ron
Mikebits Well-Known Member Jun 23, 2010 #9 I suggest you read up on switch bounce, or debouncing. Debouncing Also Switch Debouncing - The Lab Book Pages
I suggest you read up on switch bounce, or debouncing. Debouncing Also Switch Debouncing - The Lab Book Pages
I icefire91 New Member Jun 23, 2010 #10 omg tq i <3 you guys. well my teacher did not tell us that. haha Thank you so much.