digital systems (juniar project)

Discussion in 'Homework Help' started by S.C Mazibuko, Sep 7, 2013.

  1. S.C Mazibuko

    Thread Starter New Member

    Jul 16, 2013
    can anyone help me with a schematic diagram I can use to build a circuit using NAND gates to:

    Complete the truth table for a logic circuit that monitors 4 doors. An open door ​
    gives a “1” condition. Door 1 is the MSB. The circuit makes an LED glow when:​

    i. When all the doors are open at the same time
    ii. When door1 and door2 are closed at the same time, irrespective of the condition of the other doors.​
    iii. When door 3 is open and door 4 is closed, irrespective of the condition of the other doors.

    Thank you.
  2. MrChips


    Oct 2, 2009
    This should go under "Homework".
  3. WBahn


    Mar 31, 2012
    Well, what have YOU done so far to try to solve YOUR homework? Post your best affeot and we can use that as a starting point for discussions aimed at helping you move in the right direction.