若输入初值n后,在GATE脉冲有效后,在OUT端就可输出一个宽度为n个CLK周期的负脉冲,则8253应工作于方式()。
当8253工作在方式0时,在计数过程中,门控信号GATE变为低电平时,对计数器影响是()
She paid the builder()the gate.
The resident who hit a “Jersey gate” on the New Jersey Expressway must have ______.
San Francisco, open your Golden Gate, sang the girl in the theatre. She never finished her song. That date was 18th April, 1906. The earth shook and the roof suddenly divided, buildings crashed to the ground and people rushed out into the streets. The dreadful earthquake destroyed the city that had grown up when men discovered gold in the deserts of California. But today the streets of San Francisco stretch over more than forty steep hills, rising like huge cliffs above the blue waters of the Pacific Ocean.
OPENJ-GATE是()
San Francisco, open your Golden Gate, sang the girl in the theatre. She never finished her song. That date was 18th April, 1906. The earth shook and the roof suddenly divided, buildings crashed to the ground and people rushed out into the streets. The dreadful earthquake destroyed the city that had grown up when men discovered gold in the deserts of California. But today the streets of San Francisco stretch over more than forty steep hills, rising like huge cliffs above the blue waters of the Pacific Ocean.
在()时,ONU进入DISCOvery状态。等待来自OLT的“DISCOvery GATe”消息。
试说明8253芯片的六种工作方式。其时钟信号CLK和门控信号GATE分别起什么作用?
GATE是指什么?