ARPANET is an acronym for Advanced Research Projects Agency Network and it was established in 1969 by the Advanced Research Projects Agency (ARPA) of the United States Department of Defense.
ARPANET was the first wide area packet switching network for transmitting electronic data and communications between computers on a single network with a distribution functionality. The TCP/IP protocol was first implemented on the Advanced Research Projects Agency Network (ARPANET), as well as some other standard protocols such as the NCP and the 1822 protocol.
The development of ARPANET happened first in the evolution of the internet.
E-mail is an acronym for electronic mail and it was invented by Ray Tomlinson in 1971; World Wide Web was created by Tim Berners-Lee in 1990; Web 2.0 evolved in 1999.
You have a raspberry pi connected to all the sensors and a code running to trigger if the sensors are triggered. Each sensor and keypad would run to a different input on the pi. They should al be able to be powered with a single cell lipo. Is that what you are asking?
