ic 74164

Discussion in 'The Projects Forum' started by jayanthyk192, Mar 13, 2010.

  1. jayanthyk192

    Thread Starter Member

    Jan 23, 2010
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    i am using HD74LS164 for one of my projects.i activated the IC by give 5v to pi14 and grounding pin7.then i connected pin 13 to pin1 and shorted pins1&2 when i switched on the power supply all the LEDs i connected to the outputs switched on and when i gave 0 to pin 1 and when the clock went low all yhe LED's went low.can anyone tell me the problem?

    if possible give me a complete circuit to switch on the LED's one by one in a loop.
    thank you.
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,741
    759
    post the schematic
     
  3. jayanthyk192

    Thread Starter Member

    Jan 23, 2010
    80
    0
    i dont have any software to draw the schematic so i drew it with MS paint.
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,741
    759
    Ur circuit is wrong, try the attached diagram for a change
    Clock is at 1 kHz.
    when u trigger the leds will light one by one and when u off the trigger the leds will turn off one by one
    The LED resistors are 220Ω 0.5W
     
    Last edited: Mar 13, 2010
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