What??

I miss one class out of the entire 18 months and I suddenly feel like a fish out of water. Journal assignment number 4 is pick two of the following:
1. Describe what actions a computer takes from power-on to Log-in screen.
2. Describe what a computer does when you double-click MSWord's start
icon until you are brought to a blank document.
3. What are the essential "big picture" hardware pieces a computer
must have to be a computer. Explain why each piece is essential.
Did we talk about any of this in class? Does #3 mean that all computers need input, a processor, and output? Does #1 mean that computers basically "wake up" at power-on. This is where they check to see what's there, who's answering properly and that all of the ducks are in a row? And what happened to the last post that I composed but didn't post? Is it out there in the ethernet someplace? What??

Oh, by the way, I found and posted the lost post.