Li ni uChng 1: Giao din ca my tnh trong o lng v iu khin Chng 2: Cc mch s Chng 3: Cc mch iu khin vi b bin i A/DChng 4: Cc mch iu khin vi b bin i D/AChng 5: S ghp ni bus cng ni tip RS 232Ph lc Ti liu tham kho