help with asynch and synch counter IC waveforms

Discussion in 'Homework Help' started by justtrying, Apr 30, 2011.

  1. justtrying

    Thread Starter Active Member

    Mar 9, 2011
    I am currently struggling to get a handle on counter ICs. Some of the ones we have covered are 74ALS160, 163, 190, 191, 192, and 193. While I get the idea of synch and asynch loading and clearing - one is with the clock, the other one overrides the clock, I get lost when drawing the waveforms if it is preloaded - what to do with transitory state? In which case is it just a glitch? Some of them go through two states over one clock... Unclear... please any explanation would be welcome

    p.s. I tried studying the spec sheets, still don't get beyond the basic understanding of what is synch and what is not. Don't get the loading part.
  2. retched

    AAC Fanatic!

    Dec 5, 2009