术语 | handshake I/O control |
释义 | handshake I/O control 信号交换式输入输出控制(器) A kind of I/O control that allows convenient interfacing with peripherals of varying response time. Control flags and jump condition inputs are useful to reduce hardware decoding and software overhead. If multiple devices are to be connected over the same I/O lines, three-state or open-collector TTL logic is often required to drive the bus. The microprocessor I/O circuitry should directly interface with these signals for most systems. 一种采用信号交换式输入输出控制的装置,可以方便地与各种响应时间的外部设备互连。 控制标志和转移条件输入对减少硬件译码和软件开销是有用的。如果有多个设备连到同一条 输入输出线上,则要求采用三态或集电极开路TTL逻辑电路驱动总线。对于多数系统来说,微 处理机输入输出电路都应直接与这些信号相连。 |
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