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0 to 99 counter

Discussion in 'Electronic Design' started by [email protected], Feb 9, 2007.

  1. Guest

    I want to make 0 to 99 counter using 4029 and some other necessary
    chips . How can I do this ?
     
  2. mkaras

    mkaras Guest


    This should be relatively easy if you have the CD4029's already. One
    of these chips can count from 0 to 9 provided you set the BINARY/
    DECADE (pin-9) to a low level. Also put the UP/DOWN (pin-10) of this
    part to a high level to enable counting in the upwards direction.

    Counting to 99 will require two of the CD4029s. Connect the pin-9 and
    pin-10 of both parts as discussed above. Also wire the PRESET input
    (pin-2) on both parts to a low level. Wire the clocks in common to
    both parts and connect to whatever it is that will advance the count.
    On the first device (low digit counter) make sure to set the CARRY_IN
    (pin-5) to a low level. Then take the CARRY_OUT (pin-7) of the first
    counter and wire it to the CARRY_IN (pin-5) of the secound counter.
    This latter connection allows the second high digit counter to step
    only when the low digit counter is rolling over from nine back to
    zero.

    Since these are CMOS parts it is advisable to also tie all of the
    JAM_LOAD (pins 3, 4, 12 and 13) inputs to low levels at both chips.

    For the basic counter you desire no other chips should be required to
    implement the 0-99 count sequence.

    - mkaras
     
  3. Sell the chips and buy a Basic Stamp, of course.


    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
  4. Guest

    Zing! Yeah what's the deal with 4000-series CMOS in 2007?
     
  5. John  Larkin

    John Larkin Guest

    "Too cool"! That's hilarious.

    John
     
  6. I can visualize him now. Mr. Bollywood.


    Best regards,
    Spehro Pefhany
     
  7. Use a PIC micro controller, and glue the 4029 on top.
     
  8. Get two 4029s, and connect them together in the right order.

    Good Luck!
    Rich
     
  9. me

    me Guest

    wrote in @j27g2000cwj.googlegroups.com:
    Apply wire, solder, power, and a little book learnin'...
    not necessarily in that order...
     
  10. krw

    krw Guest

    It doesn't matter which order the 4029s are connected. ;-)
     
  11. Fred Bloggs

    Fred Bloggs Guest

    If you can't understand the incredibly simplified description in the
    datasheet then your chances of even wiping your butt are next to nil.
    Make yourself useful and volunteer to pick up litter in your
    neighborhood or something.
     
  12. YD

    YD Guest

    Late at night, by candle light, penned this
    immortal opus:
    Read an app-note?

    - YD.
     
  13. joseph2k

    joseph2k Guest

    What part of "obvious school work" did you miss?
     
  14. Dave Pollum

    Dave Pollum Guest


    I pick up an issue of Nuts 'n Volts every now and then for fun, and
    printed solutions to most problems is either a 555 timer or a PIC.
    -Dave Pollum
     
  15. The class action suit for gross incompetence.

    --
    Many thanks,

    Don Lancaster voice phone: (928)428-4073
    Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552
    rss: http://www.tinaja.com/whtnu.xml email:

    Please visit my GURU's LAIR web site at http://www.tinaja.com
     
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