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Measure logical circuit average noise? [closed]

I design a logical circuit that behave like Digital Clock with alarms. So, i want to measure it's electrical noise, how can i do this ? Thanks for your advance.
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142 views

Mismatched Pull Up Resistors

Is it OK to have pull up or pull down resistors which aren't all the same value (if you're running low on components for example)? I can't think of a reason it should affect simple logic circuits. ...