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When creating new logic tests, I use data sheets and sheets prepared specially by me, on which I write various test combinations. Unfortunately, as you noticed, I had to correct some tests, because when rewriting instead of the values "L", "H" and "Z" (logical "0", "1" and high impedance state tested at the output of the IC), I entered "0" "1", which are used to supply the appropriate logical values to the inputs of the integrated circuit. If there are only values in the logic vector that give values for inputs ("0", "1", "C", "G" and "V") or if a given output or input ("X") is ignored, such a vector always is correct.
I am sorry for these mistakes. Seems to be all of them because I re-checked all the tests I created.
Besides, before performing the test, I have to buy the appropriate IC first, which is not so simple nowadays, because most ICs were and are less popular. |
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