i'm newbie here... hope all u guys can help me.....we were ask to build/design a digital clock that can be interchange from a normal 12hour clock to military time clock.... what will we do first? we were advice to use 7490 and 7492 ICs.... we have no idea to construct the diagram....... how will we start it......
Millitary time is 24 hour time. Midnight to 12 PM is the same. 1 PM normal time becomes 1300 hours, 2PM become 1400 hours and so forth.
Minutes and Seconds remain the same.
I am not aware of any current clock chips availible to make it easier to design a build a clock. You can start off with a time base of 1 pps, divide by 60 for seconds, divide by 60 for minutes, and then divide by 24 for hours.
hiii
my 555 is not giving me output pulses(astable)......I have connected properly.....but osciloscope is not showing pulses........nothing is wrong in connections.......I have checked everything........what should I do...........plz help.........very urgent.........already waste so many days on this..............
hiii
my 555 is not giving me output pulses(astable)......I have connected properly.....but osciloscope is not showing pulses........nothing is wrong in connections.......I have checked everything........what should I do...........plz help.........very urgent.........already waste so many days on this..............
A 555 is a very simple and reliable circuit. If it doesn't work you've either got it wired wrong or you have a faulty component - assuming you're using this as a clock generator it's not going to be a very accurate clock though!.
hiii
my 555 is not giving me output pulses(astable)......I have connected properly.....but osciloscope is not showing pulses........nothing is wrong in connections.......I have checked everything........what should I do...........plz help.........very urgent.........already waste so many days on this..............
hiii
my 555 is not giving me output pulses(astable)......I have connected properly.....but osciloscope is not showing pulses........nothing is wrong in connections.......I have checked everything........what should I do...........plz help.........very urgent.........already waste so many days on this..............