chapter 7 nhóm 4

A set of I/O modules is a key element of a computer system.

• A. True
  

• b. False

An I/O module that is quite primitive and requires detailed control is usually referred to as an _________.

• a. I/O command
  

• c. I/O processor
  

• b. I/O controller
  

• c. I/O channel
  

The most common means of computer/user interaction is a __________.

• a. keyboard/monitor
  

• b. mouse/printer
  

• c. modem/printer
  

• d. monitor/printer
  

An I/O module must recognize one unique address for each peripheral it controls.

• a. True
  

• b. False
  

A disadvantage of memory-mapped I/O is that valuable memory address space is used up.

• a. True
  

• b. False
  

The I/O function includes a _________ requirement to coordinate the flow of traffic between internal resources and external devices.

• a. cycle
  

• b. status reporting
  

• c. control and timing
  

• d. data
  

The _________ command causes the I/O module to take an item of data from the data bus and subsequently transmit that data item to the peripheral....

• a. control
  

• b. test
  

• c. read
  

• d. write
  

The ________ command is used to activate a peripheral and tell it what to do.

• a. control
  

• b. test
  

• c. read
  

• d. write
  

The 8237 DMA is known as a _________ DMA controller....

• a. command
  

• b. cycle stealing
  

• c. interrupt
  

• d. fly-by
  

________ is a digital display interface standard now widely adopted for computer monitors, laptop displays, and other graphics and video interfaces.

• a. DisplayPort
  

• b. PCI Express
  

• c. Thunderbolt
  

• d. InfiniBand