Since the Industrial Revolution in the late 18th and early 19th centuries, the manufacturing process ...........1 . One of the most dramatic was the introduction of computer aided manufacturing (CAM), a system of ...............2 to assist in the manufacturing process. This technology began to be developed in the 1950s, and by the 1970s, it was being used by some large manufacturers. By the early 21st century, computer aided manufacturing ...................3 of the manufacturing process in many industries.Through the use of CAM, ............4 , using systems such as real-time control and robotics. A CAM system usually controls the production process through varying degrees of automation. These processes ..................5 , such as lathes, milling machines and welding machines. Each of the many manufacturing processes in a CAM system .................6 , so a high degree of precision and consistency can be achieved that is not possible with machinery that must be controlled by people.
A. using computer technology
B. a factory can become highly automated
C. has undergone many dramatic changes
D. are carried out by various robotic machines
E. is controlled by computers
F. had become an integral part
