Section 18.1
Review Questions
Early History of I/O
  1. What was the earliest operating system called?
  1. What speed disparity made multiprogramming profitable?
  1. What is a port number?
  1. Are IN and OUT instructions no longer?
  1. What is the physical realization of port numbers?
  1. What are some of the nasty complications of real input and output?
  1. What is a dip switch?
  1. How does plug 'n' play work?