Texas Instruments interview questions

I applied online before attending my school's career fair and talking to TI. I was then offered a next day interview. The interview was 30 minutes, and I expected it to be purely behavioral. Unfortunately after a few generic behavioral questions, my interviewer (a senior design engineer) pulled out pen and paper and grilled me on conceptual circuit questions (op-amps, inverters, an infinite lattice of resistors, transistors and diodes). He wasn't at all sympathetic if I didn't remember something from my classes, or if I hadn't learned something in class (like transistor circuits). I think whether or not technical questions are asked on the first interview is up to the interviewer, and they all seemed to be off the top of his head. He basically told me at the end that I'm unqualified and good luck in the future. TI also doesn't email you to tell you if you've been rejected.

good intervieewing process very straight no complains go for it very friendly look to thsi palce forward challnegi ng queation not a water of time not too,long