What was the name of the first commercially available micro-processor chip?

1Intel 8008
2Intel 8080
3Intel 4004
4Motorola 6809

Answer:- 1

Explanation:-

Solution:

The Intel 4004 is a 4-bit central processing unit released by Intel Corporation in 1971. It was the first commercially available microprocessor by Intel, and the first in a long line of Intel CPUs.
The chip design started in April 1970, when Federico Faggin joined Intel, and was completed under his leadership in January 1971. The first commercial sale of the fully operational 4004 occurred in March 1971 to Busicom Corp. of Japan for which it was originally designed and built as a custom chip.

Source : wikipedia.org