@book{170545,
	author = {Tocci, Ronald J. and Vega Fagoaga, Juan Carlos, tr.},
	title = {Sistemas digitales : principios y aplicaciones  /},
	publisher = { Prentice Hall Hispanoamericana,},
	year = {1987},
	address = {México  :},
	edition = {3a ed.},
	note = {Título original: Digital systems: principles and aplications}
}