digital clock circuit

Discussion in 'Homework Help' started by sajed, Nov 7, 2004.

circuit digram on bread board

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  1. sajed

    Thread Starter New Member

    Nov 2, 2004
    5
    0
    plz can u help mee,
    i want circuit digram of digital clock circuit on the bread board with this component

    IC 555
    6* IC 7447
    5* 7490
    1 74192
    6* 7SEGAMENT
    2* 7414
    2* 7408
    2* 7402
    2* 7476
    CAPACITOR 100MF
    10* LED
    R=7.2Kohm, R= 3.6 Ohm
    thanx
     
  2. mozikluv

    AAC Fanatic!

    Jan 22, 2004
    1,437
    1
    hi,

    are you going to use all those chips you listed to make a digital clock, when you can make a digiclock with just 3 chips.
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Hi,

    Mozikluv's three chip solution is the better one to go for. Most of your TTL chips are out of production (7402, 7414, 7490, 7476) and hard to find.

    What's the 555 for? The usual source for the timebase is the power transformer. You take off one side with a diode and pad it down through a resistor and zener diode.
     
  4. sajed

    Thread Starter New Member

    Nov 2, 2004
    5
    0
    thanx for all ,
    but where is the circuit digram??????
    plz i need it
     
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