In the 35th anniversary talk on the 4004 at the Computer History Museum in 2006, Ted Hoff mentioned that one of the applications of the 4004 was for computerize

In the 35th anniversary talk on the 4004 at the Computer History Museum in 2006, Ted Hoff mentioned that one of the applications of the 4004 was for computerized cow collars for tracking feed and water ingestion: https://www.youtube.com/watch?v=j00AULJLCNo https://www.youtube.com/watch?v=j00AULJLCNo So this is one of the first uses of a microprocessor. To paraphrase Jaron Lanier, calling tracking collars "smart" is an insult to human intelligence.