7 segment display counter circuit(im new to this. sorry)

Discussion in 'The Projects Forum' started by nerocrez026, Aug 31, 2010.

  1. nerocrez026

    Thread Starter New Member

    Aug 31, 2010
    Good day everyone!

    I really need help on this one. I don't know much about circuits. I have to build a simple circuit which displays numbers 0-7 when triggered. What I want to happen is if I pressed a button or something, the number displayed will increase(ex. 1 will become 2 and so on..). Also, when it gets to 7 and I triggered it to increase, it should reset to 0. I'll be using a breadboard for this. I tried searching for schematic diagrams and i found this websites :


    I got a little idea from these websites but I still need some enlightenment. I need your help as soon as possible. I need a some sort of tutorial or step-by-step procedure in making these, so I can truly understand. If you know any sites. Please tell me. Thanks in advance for all those who will be sharing their knowledge.
  2. marshallf3

    Well-Known Member

    Jul 26, 2010
    Shift register IC > BCD > Display decoder/driver IC ?
  3. Wendy


    Mar 24, 2008
    So you want a simple 7 segment 0-9 counter with a carry in and a carry out?

    Question (with no disparagement), are you new to electronics where you have problems translating their schematic to a protoboard?

    This site is very friendly to beginners, but we have to know your level of expertise to help properly.

    What parts do you have, or what can you get? A 7490 and 7447 are classic ways to do it, but the parts are a little hard to get nowdays, and it is by far not the only way to do this.

    Just something to start you off...

  4. Flow


    May 30, 2010
    Can you use ICs or do you have to design the system with Flip Flops yourself?

    And yea, how much do you know about digital design?
  5. nerocrez026

    Thread Starter New Member

    Aug 31, 2010
    I'm really new. I only have little knowledge about this. But I know how decoders work. My friend gave me some ICs that I can work on. I now have a 7447 and a 555 timer?