There will always be more to be researched and discovered.
Answer:
Martin Luther King Jr used words that changed how people view African American people (or black people in general). his speech changed the way Europeans saw the blacks; not as inferiors, but equals, and as in the words of God "all men are created equal" he used strong and vivid words in his speech to really change the people's view. After his assassination, everyone had remembered his speech and used that to change the society that we live in today
Explanation:
I mean that's what I remember, and if it's incorrect, I deeply apologize
Answer:polling and interrupt
Explanation: polling is a protocol in which the CPU constantly checked if a device request an important attention based on a request. The polling process unit constantly scans the device. Example of polling is when a parallel printer port is pulled to check whether it is ready for another character which involves examining as little as one bit of a byte.
interrupt is a mechanism whereby a device notifies a CPU that it requires a response based on a request. The CPU gets an interrupt signal via an interrupt request line allowing the CPU to spot it's current process and give priority to the interrupt request at that point in time. Example of interrupt is pressing a key on a keyboard which in turn triggers a specific interrupt handler.
