See, one can do almost antthing with op amps! Equally important is the fact that the IC op amp has characteristics that closely approach the assumed ideal. This implies that it is quite easy to design circuits using the IC op amp. Also, op amp circuits work as levels that are quite close to their predicted theoretical performance. It is for this reason that we are study-ing op amps at this early stage. It is expected that by the end of this chapter the reader should be able to design nontrivial circuits successfully using op amps.