![]() So how did it all compare to a live class? Astonishingly well, it seemed to me. These included an online version of the course textbook an always-available “circuit sandbox” lab environment complete with virtual signal probes, sweep generators, and oscilloscopes and-most critically-a lively and well-managed discussion board. “Massively open” means massively scalable, and the MITx organizers managed to create an impressive suite of shared resources. Hands-free Notes: The MITx software allows web users to play back lectures delivered on a virtual blackboard, line by line. Midterm and final examinations rounded out the busy calendar. Optional video tutorials supplemented the lectures with solved problems and math refreshers. Spanning almost the entirety of the 1000-page course textbook, which Agarwal coauthored, each of the 14 weeks of class included 2 to 4 hours of lectures, online exercises interspersed with lecture sequences, a homework problem set, and an online lab, which involved building and testing simulated circuits. The curriculum, identical to that of the classroom MIT course, was challenging. But any 6.002xers who mistook his professorial charisma for a lack of seriousness, expecting a gentle tiptoe through circuitry basics, were swiftly disillusioned. In an early recorded lecture, which plays as a YouTube video, Agarwal dons full Blues Brothers regalia to demonstrate noise margins, a chain saw his source of system noise as he bobs to a disco tune, while laughter resounds in the classroom. Only participants who formally signed up for the 6.002x course can earn a credential certifying successful completion MIT has not announced when the course will be offered again. Although MIT has made course materials publicly available for over a decade, this is its first online class involving scheduled instruction, supervision, and testing. Participants were lured by some powerful enticements: the prestige of MIT, the opportunity to learn from a renowned professor, and the price-free. ![]() The course, dubbed 6.002x, was an adaptation of MIT’s undergraduate class in circuit design and analysis and was part of the university’s MITx initiative, which aims to offer anyone with an Internet connection access to a selection of its courses. And it was a horde: More than 150 000 of us from dozens of countries had signed up for MIT’s inaugural MOOC, or massively open online course, which began in early March and ended in June. The professor of electrical engineering and computer science said so himself as he welcomed his vast horde of online students. 7-segment display and driver.MIT’s Anant Agarwal has a thing for chain saws. Logic gates: AND, OR, NAND, NOR, XOR and 74XXX parts. Speakers, Microphones, Buzzers, DC Motors, and LEDs. Supported elements include: Signal generators, Voltage sources, and Current sources. The scope can simultaneously track many signals over time and features a touch interface to control the total time displayed and stacked and unstacked modes to easily compare signals. If you want to see how a value changes over time, then you can add values to the built-in oscilloscope. The app features a multimeter that you use to probe around the circuit to instantly read voltages and currents. The app has everything from simple resistors, to switches, to MOSFETS, to digital gates. There are over 30 elements you can use to build your circuits. Instead, you just play with the circuit as you normally would, with the power on. You do not stop to take a measurement or spend a lot of time configuring reports. It's just like working with the real circuit. But iCircuit is unlike other CAD programs because it is always simulating. You use it as you would any CAD program: you add elements, connect them together, and set their properties. It is the perfect companion to students, hobbyists, and engineers. Its advanced simulation engine can handle both analog and digital circuits and features realtime always-on analysis. ICircuit is the premier Windows Phone 7 app for designing and experimenting with circuits.
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