Sherr, S, Durbeck, R.C., Suryn, W, Veillette, M."Input and Output The Electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton CRC Press llc. 2000Sherr, S., Durbeck, R.C., Suryn, W., Veillette, M. “Input and Output” The Electrical Engineering Handbook Ed. Richard C. Dorf Boca Raton: CRC Press LLC, 2000