Electrical control systems apply control systems engineering to the ability to maintain system performance to known parameters. A photocell switch is essentially a light dependent resistor, LDR. Its resistance decreases with increasing incident light intensity. They are used in many applications for on-off control especially in lighting installations. Increasingly we are also required to know about environmental issues, sustainability, quality and compliance. Job titles such as safety manager” or environmental manager” are steadily being replaced by QHSE positions at higher levels of management. At the same time, lower-level positions are being required to encompass much broader areas, resulting in specialization in such fields as quality, safety, health, environment and the response to emergencies. In larger organizations, the scope of health and safety will go beyond what a single person can address, and more specialists will be needed. The current flowing through the loop wire creates a magnetic field around the wire as given by Equations 2-1, 2.1 and 2-3. If a vehicle (or any other electrically conductive object) enters this magnetic field and the magnetic field or a component of the magnetic field is normal to the area of the object, eddy currents are induced in the conducting object. The eddy currents generate another magnetic field that opposes the magnetic field of the loop, causing a decrease in the total magnetic field around the loop. Since the loop inductance is proportional to magnetic flux, the loop inductance decreases. Hence the transducer will just convert the energy from one form to another and all the remaining work is done by the additional circuits connected. This whole device forms a sensor. Sensors and transducers are closely related to each other. One of the most emerging trends in information technology, Automation is aimed to augment people and propel business operations. It combines packaged software, machine learning, and automation tools to deliver the results. In the next couple of years, automation of data science will empower scientists to churn out advanced analysis. Companies like Volvo, Audi, Ford and Mercedes-Benz are incorporating animal detection systems into their models for car safety. This course discusses several applications of DSP. Topics covered will include speech analysis and coding; image and video compression and processing. A class project is required, algorithms simulated by Matlab. Prerequisites: ECE 161A. Engineering services extend to hydraulic repairs, supply of material handling equipment, component manufacture and engineering repairs. Suggest some colleges which accepts PCB (without maths in +2 ) students in biotechnology and biomedical engineering.