>If someone cannot apply Ohm's law to a resistor network, it is a good >indicator that they will not understand more complex circuits. Moreover, we >found that people who spent more time on the test, generally did poorer than >the ones who finished it quickly. In my junior year EE lab, I still remember one of the experiments, it was a digital circuit using TTL chips. My lab partner (who had pretty close to a 4.0 average) was all upset. He had done the calculations on the current required by all the chips (100 mA total or whatever). The power supply was 5V rated at 3A. He was concerned because the supply would force 3A though the circuit, damaging the chips. True story. -- --- Chris Smolinski Black Cat Systems http://www.blackcatsystems.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist