small question on the LOAD pin of the 163 counter

[qtommer]

what is the purpose of having the LOAD pin on the 74LS163 counter? Ive read the datasheet and done simulation experiments on its purpose and have concluded that when LOAD is held HIGH the outputs are all all held HIGH. In what sort of application would this be useful?
Thanks

 

[ericgibbs]

what is the purpose of having the LOAD pin on the 74LS163 counter? Ive read the datasheet and done simulation experiments on its purpose and have concluded that when LOAD is held HIGH the outputs are all all held HIGH. In what sort of application would this be useful?
Thanks

hi,
The 163 has a parallel load option, where the data on input pins A,B,C,D. is loaded as a preset into the counter.

 

[qtommer]

hi thank you so much for your reply..


in what kind of application would parallel loading be useful? (as in a real life project or system)

thank you so much =)

 

[ericgibbs]

hi thank you so much for your reply..


in what kind of application would parallel loading be useful? (as in a real life project or system)

thank you so much =)

hi,
The 74LS163 is a 4 bit counter , 0 to 15 states on the 4 output pins.
Say you wanted the 74LS163 to count as a decade counter, 0 to 9 states.
One option would be to connect the parallel load inputs to say 6, so instead of the counter starting from 0 the counter would start from 6 and the RCO [ripple carry output, the clock to a following counter] would occur every 10 clock pulses.
So in effect it would be a decade counter/divider.

Think how you would make a simple 0 to 59 seconds counter using two 74LS163's.

 

[qtommer]

ahh i see i see

thank you so much for your help=)