That was true years ago back when ICs were through-hole devices with 0.1 inch pitch where common. ? Times have changed and now ICs are surface mounted with no holes. ? ?But we do still see connectors with 0.1¡± pitch in prototype and hobby electronics but mainstream parts are now MUCH smaller.
In fact, I¡¯d say that finding an engineer who knows how to work with inches is hard except for some older ones living in the US. ? I may have been the last of the students who still had to work a very few problems in inches and pounds just so that we¡¯d know how. ? This is at UCLA in the 1980s. ?I¡¯ve heard they have stopped doing this., ?Later i ended up teaching some science classes (in the 2010s, in the US), the textbooks were 100% SI units
toggle quoted message
Show quoted text
Most do not know most holes on pc board are layout in inch.
