Homework problems!

Discussion in 'Homework Help' started by infinitig35, Mar 31, 2008.

  1. infinitig35

    Thread Starter Member

    Mar 3, 2008
    25
    0
    :( Good morning all. I have 1 maybe 2 homework problems that I'm stuck on, maybe someone in here can offer some help. Here're the 2 questions:

    Considering a TTL gate that is Open Collector...
    What is missing in the circuitry of the gate?

    How does the operation of an asynchronous output differ from that of a synchronous output?

    thanks everyone
     
  2. infinitig35

    Thread Starter Member

    Mar 3, 2008
    25
    0
    Can Anyone?
     
  3. veritas

    Active Member

    Feb 7, 2008
    167
    0
  4. rwmoekoe

    Active Member

    Mar 1, 2007
    172
    0
    1. the positive side npn is missing (or a pull-up resistor, in unbuffered gates, i don't remember).

    2. in a communication bus? asynchronous mode always had start and stop marks (bits) in the data (bits), while the synchronous mode should have another line contains the clock of the data transmitted.
     
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