Embedded - ->for u

Microcontrollers mentioned are just examples.. Even PIC has 16 bit microcontrollers.. PIC24 and dsPIC series of Microchip are 16-bit microcontrollers..

How FitBit Works Just clip it on and go. The FitBit tracks much of your physical activity and integrates with software that encourages you to be more and more active. When it comes to motivating people to work out, Richard Simmons has nothing on FitBit. FitBit is a physical activity tracker designed to help you become more active, eat a more well-rounded diet, sleep better and ultimately, turn you into a healthier human being. And it does it all without subjecting you to Simmons or his maniacal grin. The FitBit was introduced in 2008 by co-founders Eric Friedman and James Park in San Francisco. In short, it's a 21st-century pedometer. The equipment is deceptively simple. About the size of a clothes pin, the FitBit is shaped like a clip, which you can easily slide into your pants pocket or onto a bra strap, as it's only around 2 inches (5 centimeters) long and about half an inch (1.2 centimeters) thick. Throughout the day, FitBit logs a range of data about your activities, including the number of steps you take, distance traversed and calories burned. It's also sensitive enough to detect just how vigorous your motions are, which differentiates a slow stroll from a jog that consumes far more calories. At night, you slip the FitBit into a wristband so it can monitor your sleep quality. It knows when you go to bed, how frequently you awaken and how long you lie prostrate, staring at the ceiling, pondering unmet deadlines. Thrashing around at midnight because of that quadruple latte you gulped at 4 p.m.? FitBit will know. The clip has a built-in OLED (organic light-emitting diode) that scrolls current activity data. So if it's late in the day and you still have 8,000 steps to get to your goal of 15,000, you know it's time to get going, and fast. A little flower avatar "grows" as you become active; it gets shorter if laziness takes hold. Every time you pass within 15 feet (4.5 meters) of its wireless base station, FitBit automatically offloads a cornucopia of numbers. From there, your statistics go to your online profile, where you can peruse details, monitor your progress (or lack thereof) and redouble your dedication to getting into shape. The Tech Teardown So you clip a little plastic widget to your clothes every day, hoping that it'll somehow magically transport you out of couch potato land and into healthful bliss. The process seems straightforward, but the technology is sophisticated. The linchpin of FitBit is its three-dimensional accelerometer system. In plain language, that just means it tracks motion, as well as the intensity of that motion. Then FitBit's software relies on special algorithms to convert raw accelerometer data into usable information. Those algorithms are the secret sauce that the company has worked diligently to tweak and improve, by experimenting and comparing FitBit's accuracy with other test machines. For example, as the engineers test the "calories burned" feature, they compare FitBit's results with a portable telemetric gas analysis system. The latter analyzes gas composition as you exhale and very accurately determines your calorie usage. With a lot of trial-and-error, FitBit has learned how to track and convert your energy expenditures (tracked by the accelerometer) into information about the number of calories you burn. Likewise, the company's testers have developed algorithms that work well for tracking the steps you take and how far you've moved. The sleep tracking feature is more rudimentary. It merely logs how often you move throughout the night. So, if you're reading in bed and not moving the arm to which the FitBit is attached, it will think you're sleeping. Likewise, if you tend to flail about often during the night, the device may interpret your motions as meaning you're not sleeping at all.

Q] What is called a cycle in case of AC operation ? 1) When ac completes the (+)ve half, is called a cycle. 2) When ac goes through a complete (+)ve (-)ve, is called a cycle. 3) When an alternating quantity completes the (–)ve cycle, is called a cycle. 4) Option A & C Both. Ans:2 The alternating current changes its magnitude from one instant to another instant continuously with respect to the time interval. Basically the cycle in an alternating current is known as the path of the one half of the positive magnitude and one half of the negative magnitude that starts from the starting point and ends on the ending point.

Code is also available for the same in below link.. https://www.microchip.com/DevelopmentTools/ProductDetails/mPOSDemo

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Basic understanding on embedded systems can be with the above images..