The origin of ABS developed by Bosch, a German company specializing in automotive electronic systems, can be traced back to 1936, when Bosch applied for the patent of "anti-lock braking device for motor vehicles". 1964 (also the year when the integrated circuit was born), Bosch started the research and development plan of ABS again, and finally came to the conclusion that "it is feasible to prevent wheel locking through electronic device control", which is the first time in history that the term ABS (anti-lock braking system) appeared! The first ABS prototype in the world appeared in 1966, which proved to the world that "shortening the braking distance" is not an impossible task. Due to the huge investment, the initial application of ABS is limited to railway vehicles or aircraft. Teldix GmbH cooperated with Mercedes-Benz in 1970 to develop the first prototype for road vehicles-ABS1. The system has mass production foundation, but its reliability is insufficient. The control unit has more than 1000 components, which is not only expensive, but also prone to failure.
1973, Bosch acquired 50% equity of Teldix GmbH and R&D achievements in ABS field. 1975, AEG and Teldix reached an agreement with Bosch, entrusting Bosch to implement the ABS system development plan as a whole. ABS 2 was born after three years of hard work! Unlike ABS 1 which adopts analog electronic components, ABS 2 system adopts digital components completely, which not only reduces the number of components in the control unit from 1000 to 140, but also has three advantages: cost reduction, greatly improved reliability and obviously accelerated operation speed. At the end of 1978, two German automakers, Mercedes-Benz and BMW, decided to install ABS 2, a high-tech system, on S-class and 7-series cars.