1) The first successful mass-produced personal computer, the IBM PC, was introduced in 1981 and played a significant role in popularizing the use of computers in homes and offices.

2) The Cricket World Cup is held every four years and features teams from around the world competing for the prestigious title.

3) The Atlantic Ocean is the second-largest ocean and is known for its strong ocean currents, including the Gulf Stream.

4) Online banking and mobile banking have become increasingly popular, providing convenient access to banking services through digital platforms.