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Homework Help: Please help me ly - D-Type Latch problem

  1. May 8, 2006 #1
    Please help me urgently - D-Type Latch problem

    Hi all,

    I have just descovered this wonderful forum and am hoping you can save my degree! I have to have this problem finished in a matter of hours and just can't figure out the schematics/truth tables. Please please please take the time to help in any way with any part if you can - it shouldn't be too hard for some of you experts and I would be eternally grateful. Thanks in advance,

    Oliver

    Here are the tasks:

    Design 1
    Design a 4-bit BCD counter that counts from 0 to 9. After 9 the counter should cycle through the same sequence again.

    Design 2
    Design a 4-bit binary counter which counts in binary from 0 to 15 then cycles through the same sequence again.

    Design 3
    Design a 4-bit BCD counter that has a direction input (which determines the direction of the count). If direction = 0 the counter should count down, alternatively if direction = 1 then the counter counts up. The input may change at any time and the count must change appropriately at the next clock edge.

    Design 4
    Design a 4-bit binary counter that has a direction input (which determines the direction of the count). If direction = 0 the counter should count down, alternatively if direction = 1 then the counter counts up. The input may change at any time and the count must change appropriately at the next clock edge.
     
  2. jcsd
  3. May 8, 2006 #2

    Gokul43201

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    olimain : please read the sticky thread at the top of this subforum, or the forum guidelines that you agreed to before entering (see my signature).
     
  4. May 8, 2006 #3
    Thanks, and I do know I should have posted this well in advance, however I have only just come across this website and hoped I may get lucky.

    Apologies.

    O
     
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