Digital clock

Discussion in 'Homework Help' started by sejan, May 25, 2008.

  1. sejan

    Thread Starter New Member

    May 24, 2008
    7
    0
    I was trying to design a digital clock.I managed to build a 60Hz clock generator using 555 timer,but now I need to divide it by 60.I can use a decade synchronous counter cascaded with a divide by six counter as i found in text book.But i just can't find the IC no of a DIV-6 counter.Can you help me please?:confused:
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,765
    2,535

    A much better alternative is a 4060, which has a quartz oscillator schematic. Take a look at this data sheet...

    http://focus.ti.com/lit/ds/symlink/cd4060b.pdf

    The chip will get you to a 2 hz clock with a watch crystal and a small handfull of parts. The same built in oscillator can be used as an RC oscillator also. A good website for chips is...

    http://users.otenet.gr/~athsam/database.htm

    If you just have to have a divide by 6 then check out the 7492.
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,645
    2,344
    Hello,

    You could use a 74LS92.
    This is an divide by 2 and a divide by 6.
    See datasheet.

    Greetings,
    Bertus
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    You can use a decade counter as a divide by 6. Connect its sixth output to the reset and it will divide by 6.
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Most decade counters have a BCD output. The way to make it short count before 9 would be to AND bit 1 plus bit 2 for the reset at the count = 6.
     
  6. jdavid_lester

    New Member

    Apr 17, 2008
    1
    0
    I think you need to specify the tecnology which ou wish to use. It can be TTL or CMOS.

     
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