Review: Term 2

Term 2 is done, and Kavi curled up with a warm drink to remember it all. "We learned to plan a program as a picture — that's a flowchart, with an oval to start and end, rectangles for actions, a diamond for a yes/no question, and arrows that show the order. We met the operating system — the OS — the manager that starts up first, loads our apps into memory and shares the CPU so many apps run at once. We found out a big message doesn't travel in one go: it is cut into tiny packets that each carry an address and a number, zoom off by different roads, and get put back in order at the end. And we learned to crop, trim and layer to make our media better." Kavi smiled. "Let's look back and lock every idea firmly into our heads."