Characteristics (see Table 5.2) and Differences in I/O Devices


Table 5.2: Characteristics of I/O Devices
aspect variation example
data transfer mode character, block terminal, disk
access method sequential, random modem, CD-ROM
transfer schedule synchronous, asynchronous tape, keyboard
sharing dedicated, sharable tape, keyboard
device speed latency, seek time, transfer rate, delay between operations  
I/O direction read only, write only, readwrite CD-ROM, graphics controller, disk

2004-05-25