- Intel 4004 (Wikipedia)
The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. Sold for US$60 (equivalent to $450 in 2023), it was the first commercially produced microprocessor, and the first in a long line of Intel CPUs.
- Snoqualmie Tunnel (Wikipedia)
The Snoqualmie Tunnel is a former railroad tunnel near Snoqualmie Pass in the U.S. state of Washington, located east of Seattle. The tunnel crosses the Cascade Range about three miles (5 km) south of the pass, which is used by Interstate 90, on the border between King County and Kittitas County. It is 11,894 feet (2.253 mi; 3.625 km) long and is at an approximate elevation of 2,600 feet (790 m) above sea level, just north of Keechelus Lake. Its east portal is at Hyak.