The Advanced Gun System, left, is intended to take on the role of the battleship's 16-inch guns, right. Aside from its GPS-guided shell, the digital technology of the AGS's fire control system does exactly what the USS Iowa's Rangekeeper Mark 8 did - just with fewer people and less weight.
http://arstechnica.com/information-technology/2014/03/gears-of-war-when-mechanical-analog-computers-ruled-the-waves/