با تشکر ازاز دوست خوبم بابت جوابتون به این سوال
می خواستم بدونم از روی تجربه این حرف رو می زنید یا از روی نشونی یا چیز دیگه آخه پایه سمت راست بالا هم می تونه پایه شماره 1این ای سی باشه
با تشکر ازاز دوست خوبم بابت جوابتون به این سوال
می خواستم بدونم از روی تجربه این حرف رو می زنید یا از روی نشونی یا چیز دیگه آخه پایه سمت راست بالا هم می تونه پایه شماره 1این ای سی باشه
Here is a basic rule that applies for mostintegrated circuits: There’s a polarity mark somewhere. From that polarity mark, move counterclockwise around the chip, and number the pins starting at 1.
A common polarity marker is a half-moon shape at one end of the chip. Another is a small dot by pin 1, or sometimes a small triangle or tab instead. Sometimes several of these marks can appear.
Often pin 1 is in a corner of the chip, and it’s only that corner— not the pin itself –that is marked by the small circle or triangle.
In this sketch,. The polarity marks are a half-moon indentation on the left hand side as well as a dot by pin 1. This device has 20 pins, numbered counterclockwise along the two edges from 1 to 20.
As we’ll see, there are plenty of examples of this, or close variations on it. But there are also cases where there are no direct marks, but you can instead rely on the orientation of the text to understand the numbering. The text orientation is consistent, and for chips of this shape (with pins on two opposite sides), you can reliably assume that the polarity mark goes to the left of the text.
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