Who invented the tv .hint it was 2 people

Entering key dates from your course syllabi test and quiz dates, assignments due dates in your planner can you manage your schedule by allowing you to see commitments ahead of time.

What are "open-loop" and "closed-loop" systems

Between 1932 and 1938, chester carlson developed a process that enabled a "picture" of a document to be taken and then have it reproduced on another