Fill in each numbered blank with one suitable word or phrase. I/O (short for input / output) is a general term for devices (Question 41) ____ computers information from the outside world and that return the results of computations. For personal computers, for (Question 42) __ keyboards and mice are the primary ways people directly enter information (Question 43) _____ the computers; and monitors are the primary way (Question 44) ____ information from the computer is (Question 45) ____ back to the user, though printers, speakers, and headphones are common, too. There is (Question 46) _____ huge variety of (Question 47) ____ devices for obtaining other types of input. One example is the digital camera, (Question 48) ___ can be used to input visual information. The (Question 49) ____ to transfer data between computers has opened up a huge range of capabilities for the computer. The global Internet allows millions of computers to transfer information of all types (Question 50) _____ each other. Question 41:
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