在中断中,置一个屏蔽位为0叫作输入输出处理禁止。 In interrupts, the setting of a mask bit to0 is called disabling an input/ output processing.
一种存取方法,只有当用户程序提出请求时,才能实现通过输入输出通道的数据传输。 A method of access in which data transfers through input/output channels are made only as and when called for in a user program.
为加速输入输出操作,使用两个或多个输入输出部件的技术。同ORoperation。 A technique which uses two or more input/output units in an attempt to speed up input and output operations.