i don't be attentive to the place you "graduated" from, in spite of the undeniable fact that it style of feels to me which you do not have a clue of what you're doing!!! digital ENGINEERS study their commerce for YEARS: it is how they "be attentive to" that, "at that place", they elect a "resistor of 12k, 0.5W, a million%, carbon action picture, by using-hollow, axial type". i've got faith which you do no longer additionally be attentive to your Ohm's regulation. The PCB designers additionally might desire to be attentive to lots approximately electronics: a thank you to place down tracks to circumvent circulate-communicate, a thank you to apply the floor plate, a thank you to guard intense frequency song from different interference, what song width you will be able to desire to apply for a given modern-day/given copper thickess... you're able to attraction to effective schematics, yet will those schematics effect in a working unit? I doubt it! You ask "Which microcontroller" will they use? properly, in case you layout something, the 1st factor you would be attentive to is a thank you to choose on the the ideal option one... in case you elect to enhance a temperature sensor employing a thermocouple as sensor, then you extremely will elect a micro that has an ADC secure, or yet another one devoid of, yet your layout will might desire to contain an ADC chip someplace... devoid of this ENGINEERING awareness, you will by no potential layout ANY style of PCB... Get first a level in electrical energy, then one in Electronics. Engineers don't get those judgements "from the coolest of their head": THEY BLOODY be attentive to! (And so do I. Dr. "es" Engineering, PhD laptop technological awareness, 40+ years commercial progression and production, examine and progression adventure, one thousand's of multilayers PCBs under my belt)