What is abbreviation of the computer

List a few alternative options and input and output over the standerd keyboard and monitor. explain their functioning in details.

Three out of five seniors remain undecided about a college major at the end of their senior year.

An npn transistor is correctly biased and turned on if the a. base is negative. b. collector is negative. c. collector is positive with respect to the emitter and negative with respect to the base. d. collector is the most positive lead followed by the base.