badly need help in analyzing or implementing the circuit diagram of the hour part in 12 hour format clock using 74ls192 or 74ls90...tnx
With the 192 you could tie P0 high and P1-P3 low on the 1's place hour counter and tie P0-P4 low on the 10's place hour counter. Then you could use some decoding to take the PL inputs low during the next low to high clock transition on the 1's place hour counter.
The PL inputs of the 74192 are active low so you need to take them from high to low whenever you want to load the counter. I attached an example where a binary 1 would give a low output. The msb would be at the top on the nor. You can use this method to decode the outputs of the counters. You just have to make it so that only the desired inputs give the output that you need.can you you show me the diagram or how you decode the PL inputs? i've been working this one for already a one week now and still i couldn't figure it out...pleaseee...thanks...
by Aaron Carman
by Jake Hertz
by Duane Benson
by Jake Hertz