In digital logic design, circuits fall into two categories:combinational logic and sequential logic.Combinational logic circuits are implementation of Booleanfunctions. They compute their outputs as functions of theirinput. They do not have any memory elements.Sequential logic circuits, implement functions with state.That is, they keep information internally (think of this informationbeing stored in data members of an object). The output of a sequentialcircuit depends not only on the input bits, but also on the internalstate.It turns out, for sequential circuits, it’s easier to designwith a clock.So, what’s a clock?Most people think of a clock as a way to tell time. Why woulda computer need to know how to tell time?A clock, on a computer, isn’t the same kind of clock usedin your home, or on a watch. If you’ve ever bought a computer,one of the more important features it the clock rate. For example,you may buy a machine that’s running at 2 GHz. Do you knowwhat 2 GHz refers …

Geoengineering Is The Controversial Plan To Stop Climate Change By Hacking The Planet

Why classical Physics relavant to Quantum

When it comes to particle physics, there’s a sense that every law we know about classical physics just doesn’t apply. In a lot of cases, that’s disturbingly true. But some laws stay the same no matter how big or how small your subject. See how classical thermodynamics works on a quantum scale below, then keep scrolling for examples of quantum weirdness.

Human bone is stronger than steel

Your bones are incredibly strong. Ounce for ounce, bone is stronger than steel. One cubic inch of bone can withstand the weight of five standard pickup trucks, give or take a few pounds. If you’re looking for the specifics to snap a piece of your skeleton, it takes about 4,000 newtons of force to break the typical human femur. But don’t run out and start applying pressure to femurs and then get upset at us when things don’t crack correctly. A lot depends on the bone itself, its position in the body, and the angle of attack. The age, diet, and lifestyle of the bone-owner also plays a role. Before you go all Chuck Norris on bystanders to try this yourself.

Have you think what social media gives you?

Yes. You are right. Have you ever thought about it? From the internet, we gain manythings, its true. But you also give manythings to internet.Here are some are things you take from internetKnowledgeOfficial advantageWorking advantageFinancial advantageFrienship with stranger???Do you think friendship with stranger gives you advantage? Chatting with him/her gives you fun? Not at all. Actually this types chatting actually taking you to the not curable illness. You can get cancer on your brain if you are spending more hours on your phone, tablet or your computer/laptop. This social sites actually eats up your memory and brain with your eyes. Your IQ potential also decreases with more spending hour in internet. The more you will be updated to the modernity, you will waste your brain. So keep yourself safe from internet. Specially, who are below 25.You can browse internet for 20 to 30 minute maximum to search your problem of educational life or working life. But, beside it, you are in dang…


No runway, no problem—have helicopter, will travel! Igor Sikorsky (1889–1972), father of the modern chopper, had no doubt at all about the brilliance of this amazing, flying machine, which he said was the closest thing to “fulfillment of mankind’s ancient dreams of the flying horse and the magic carpet.” Jet planes are wonderful for screaming us from one side of the planet to the other. But when it comes to tricky rescue missions—plucking stranded sailors from the sea, hurling tubs of water onto forest fires, plucking engineers off wind turbines, dashing the critically injured to hospital—nothing beats a chopper. According to science historians, inventors had been trying to develop flying machines with spinning rotors for over 2000 years before Sikorsky finally built the world’s first practical helicopter in 1939. Why did it take so long? Because helicopters are incredibly complex machines—miracles of intricate engineering that take real skill to fly. How exactly do they work? Let’s t…


We take for it granted that we can fly from one side of the world to the other in a matter of hours, but a century ago this amazing ability to race through the air had only just been discovered. What would the Wright brothers—the pioneers of powered flight—make of an age in which something like 100,000 planes take to the sky each day in the United States alone? They’d be amazed, of course, and delighted too. Thanks to their successful experiments with powered flight, the airplane is rightfully recognized as one of the greatest inventions of all time. Let’s take a closer look at how it works!Photo: You need big wings to lift a big plane like this US Air Force C-17 Globemaster. The wings are 51.75m (169ft) wide—that’s just slightly less than the plane’s body length of 53m (174ft). The maximum takeoff weight is 265,352kg (585,000lb), about as much as 40 adult elephants! Photo by Jeremy Lock courtesy of US Air Force.How do planes fly?If you’ve ever watched a jet plane taking off or coming…