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Homework Help: Full adder/seven segment

  1. Aug 5, 2008 #1
    1. i want to design a 2 bit full adder (that adds two numbers each having 2 bits) with carry in and carry out and to show the output on seven segment display..

    3. the problem is that i am student in mechanical power and i am taking an electronics course..can you tell me what to do or some hints please..
  2. jcsd
  3. Aug 6, 2008 #2
    answer me pleaseee.... what do i have to do ?
    is there an ic called full adder or i have to make it with OR and AND gates ?
  4. Aug 6, 2008 #3


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    Staff Emeritus
    Science Advisor
    Gold Member

    You can get a 4-bit full adder as an IC:

    http://www.doctronics.co.uk/4008.htm [Broken]
    Last edited by a moderator: May 3, 2017
  5. Aug 6, 2008 #4
    Janus, can u tell me what to do please with my project ?
  6. Aug 6, 2008 #5


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    Staff: Mentor

    We don't give out answers to homework here on the PF. We can offer tutorial help if you show us your work. Read this about full adders:


    And this about 7-segment displays:


    Then sketch up your initial thoughts, and ask us specific questions about your circuit if you have any.
  7. Aug 7, 2008 #6
    is there vcc and ground for the seven segment ?
  8. Aug 7, 2008 #7
    what is the common cathode (3,8) ? does it means that these two pins (3,8) must be connected to the ground ?
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