17. What are the basic modes of operation of 8255?Write the features of mode 0 in 8255?

David is in week 3 of his current ashford course and has a paper due by monday night at midnight. he has finished everything but the concluding paragraph. as he boots up his computer to work on it, he sees a flash across the screen and then the screen goes black. he begins to panic as he tries desperately to turn the laptop back on. david should have saved his work on what kind of portable device?

Under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

The graph shows median weekly earnings for full-time workers according to education level. which can you not conclude?