CPU and integrated circuit manufacturer, founded in 1974. In 1976 they introduced their Z80 microprocessor which, along with Intel's 8080 and Motorola's 6502, was cheap enough, fast enough and powerful enough to revolutionise the world of computing and usher in the advent of the personal computer.
Although in the great battle for PC market share in the 80s it was Motorola and Intel that won in the end, Zilog still exists as a company and still produces semiconductor products. They are currently working on a series chips to power internet appliances, as well as the infamous V-Chip and engine management computers for cars and motorcycles.
http://www.zilog.com