A routine that determines if a device is ready to be used and, if it is, prepares a select instruction, channel command, and device order to accomplish an input/output activity or error recovery procedure.是什么意思_A routine that determines if a device is ready to be used and, if it is, prepares a select instruction, channel command, and device order to accomplish an input/output activity or error recovery procedure.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句