Kina M. (Butler) Hill (born 1971)

In 1971, in the year that Kina M. (Butler) Hill was born, in March, Intel shipped the first microprocessor to Busicom, a Japanese manufacturer of calculators. The microprocessor has since allowed computers to become smaller and faster, leading to smaller and more versatile handheld devices, home computers, and supercomputers.

In 1984, due to outrage about "Indiana Jones and the Temple of Doom" (it seemed too "dark" to many and it was rated PG), a new rating was devised - PG-13. The first film rated PG-13 was "Red Dawn".

In 1985, on March 15th, the first internet domain name was registered - Symbolics.com. Symbolics, Inc., a spinoff of the MIT AI Lab, was a computer manufacturer headquartered in Massachusetts. The company no longer exists and the domain name was sold 25 years later.

In 1986, on January 28th, the space shuttle Challenger exploded 73 seconds after launch. All seven crew members died. The cause of the explosion was later found to be a failed O-ring. The O-ring failure was due to the unusually cold conditions at Cape Canaveral.

In 1997, on July 1st, Hong Kong was returned to China. In 1898, Great Britain was awarded Hong Kong for 99 years. In a subsequent agreement, China agreed to allow Hong Kong to remain capitalist. So the handing over of the area ended British rule but did not change the economic system of Hong Kong.