Jefferson City native Jack St. John Kilby received the Nobel Prize for physics this weekend in Stockholm, Sweden. Kilby is credited with inventing the integrated circuit and with co-inventing the pocket calculator. It was his drawing of the integrated circuit in 1958 that has changed the world. Just about everything we use today, from our electric toothbrush to the clock radio to the way our cars and trucks run make use of that technology in some way. Kilby is a retired Texas Instruments engineer. He is 77 and lives in Dallas now.