4.कमपयुटर हारडवेयर तिन परकारमा विभाजित छ। तिनीहरू हुन :
इनपुट उपकरण ( माउस, किबोरड, सकयानर)
आउटपुट उपकरण ( मनिटर, परिनटर, सपिकर)
परशोधन उपकरण (सि.पी. यु)
सोरेज उपकरण ( सिडि, पेन.डराइभ)
In the air, there's nothing holding the body of the helicopter still - so the rotor blades spin one direction, but the torque applied to spin the rotors tries to spin the body of the helicopter in the opposite direction. The little rotor on the tail helps keep the body of the helicopter pointed in the same direction.
The order of magnitude of a physical quantity is its magnitude in powers of ten when the physical quantity is expressed in powers of ten with one digit to the left of the decimal.
Orders of magnitude are generally used to make very approximate comparisons and reflect very large differences.
If a vector A is multiplied by a real number (say n), the vector of same nature is obtained but its magnitude is n times that of A.
