1) Banks play a vital role in the economy by facilitating the flow of funds between savers and borrowers, providing loans, and offering various financial services.

2) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.

3) The first successful consumer digital camera, the Apple QuickTake 100, was released in 1994 and had a resolution of 640 x 480 pixels.

4) The smallest unit of time is known as a zeptosecond, which is equal to one trillionth of one billionth of a second.