General
Grades tremendously suffered because a lot of students do sloppy work: messy write-up leading to forgetting terms, decimals moving around, etc. A couple of students in this class broke the record in turning in the most "unreadable" finals.
In general, this was a good class. I broke my record of giving A+ and A in this course.

Problem 1. (OpAmp) Almost all of students got this problem right. Good job!

Problem 2. (Non-Inverting Amplifier) For reasons that I do not understand, most of the students used an active filter and set the cut-off frequency of the filter to 100 kHz. First, the problem does not specify what happens for frequencies above 100 kHz, so why a filter? Second, if the cut-off frequency is 100 kHz, the gain should be -3dB lower than the DC value not the same. Third, active low-pass filter that we worked in the class gives a 180 degree phase shift for DC signals (the problem did NOT have a phase shift).

Problem 3. (Low-pass filter). A sizable fraction of students designed a high-pass filter!

Problem 4. (BJT NOR Gate). Most got this right.

Problem 5. (FET Bias). More than half got this right, good Job. A lot of students dismissed VGS = - 4.2V out of hand as being unphysical without explanation. Some said that it cannot be negative because the circuit is biased by a positive voltage source (It can if the voltage at S is larger than voltage at G).

Problem 6. (BJT amplifier Design) Almost all got this right.

Problem 7. (Diode). Very few people got this right. More than half of the class got vo when diode is ON or OFF correctly but could not find the range of vi that leads to diode being on or off.