Programmable controllers Microcontrollers 514 Automatic control 377 Design and construction 213 Microprocessors 197 Programming 175 Embedded computer systems 128 Arduino (Programmable controller) 121 Mobile robots 120 Robots 120 Control systems 98 Robotics 84 Electronic traffic controls 75 Global system for mobile communications 71 Wireless communication systems 70 Traffic signs and signals 64 Electric controllers 62 C (Computer program language) 60 Data processing 53 Temperature control 52 PID controllers 50 Home automation 49 Automation 48 Detectors 46 Digital control systems 45 Programmable logic devices 44 Security systems 35 Sensor networks 35 Automatic speech recognition 34 Microcomputers 34