标题: New Logic Tests... [打印本页] 作者: yovish 时间: 2021-6-6 03:47 标题: New Logic Tests...
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.作者: STALKER_71 时间: 2021-6-6 07:11
Thanks for your hard work. It's grate!!!作者: admin 时间: 2021-6-6 08:36
回复 1#yovish
I checked:
74145 7491 7495 is wrong作者: yovish 时间: 2021-6-6 17:58
7491 and 7495 corrected, please check the new ones, are they still bad?
I checked 74145 on the 74HC145 chip from ELCAP and everything is OK. The same logical vectors also have 7445 and 74445, so they would have to be bad too...Please specify which logic vector lines are wrong for 74145.
Some logic tests cannot be completely compatible with the IC datasheets due to the specifics of the signals in TL866II +. For this reason, it is worth thinking about adding new signals and functionality to be more competitive...
