12 hour clock with 74190

Discussion in 'Homework Help' started by eric76, Feb 21, 2012.

  1. eric76

    Thread Starter New Member

    Feb 21, 2012
    I am building a 12 hour clock the seconds and minutes work fine but when i switch from 7490 to 74190 going into 7447 in 7 seg. the from the same 74190 to7410 and 7476 i am having all kinds of problems
  2. Wendy


    Mar 24, 2008
    Welcome to AAC!

    If you give us a schematic we may be able to help. It sound like you have the basics down, which is excellent, but without a major hint we can't really help.

    How to upload an attachment:

    To attach a document or picture to a post

    Click "Go Advanced" at the bottom of your post,

    One of several options will pop up,

    Click "Manage Attachments" much further at the bottom of your post,

    To upload a file from your computer click "Browse", then select the file.

    Schematics should be .gif or .png format, pictures should be .jpg. .jpg formats will fuzz out schematics, and should not be used for that purpose.

    I have a series of templates I use to draw schematics that is free for downloading.

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