Electronics/electrical engineers, civil engineers, chemical engineers, mechanical engineers, software engineers, and engineering students. In general there are over 1,000,000 electrical/electronics engieers. Some specific audience numbers: According to the U.S. Department of Labor: - Electrical and electronics engineers: 310,000, Computer hardware engineers: 60,000, Electrical and electronics engineering technicians: 262,000, IEEE US membership is 240,000, including students, Approx. 25,000 electrical/electronics engineers graduate in U.S. each year and 15,000 computer science/computer engineering graduates. The American Society of Civil Engineers represents 125,000 members, American Institute of Chemical Engieners has more than 50,000 members, American Society of Mechanical Engieers has 125,000 members.