logic probe

Discussion in 'Homework Help' started by yasir_66, Oct 31, 2009.

  1. yasir_66

    Thread Starter Active Member

    Jun 25, 2009
    71
    1
    hello guyz
    i have to built a logic probe compatible to both CMOS & TTL.plz give me easy schematic.
     
  2. hgmjr

    Moderator

    Jan 28, 2005
    9,030
    214
    There are a lot of logic probe projects out on the Internet. Have you "googled" the topic?

    hgmjr
     
  3. yasir_66

    Thread Starter Active Member

    Jun 25, 2009
    71
    1
    yes but i m seeking a simple L.P using 555.
    i have seen before but i lost page & not found again.
    that L.P was for both CMOS & TTL with two individual GND,one for TTL & other for CMOS.
     
  4. yasir_66

    Thread Starter Active Member

    Jun 25, 2009
    71
    1
    & i also want a speech recorder so that i can recorder lecture of my teacher.do you have such circuit?
     
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