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

2) The game of rugby originated at Rugby School in England and has since evolved into different versions, including Rugby Union and Rugby League.

3) The first commercially available digital camera, the Dycam Model 1, was introduced in 1990 and had a resolution of 376 x 240 pixels.

4) The first commercially successful video game was "Pong," released in 1972 by Atari.