Computer History Abacus Abacus is first calculating machine invented by human beings almost 3000 years ago. The purpose of abacus was to add, subtract, multiply, divide, large numbers. It may have originated in China or Egypt of Greece. It was constructed by wooden frame and that frame is divided into two parts,...
  Derivatives of Trigonometric Functions: Trigonometric and inverse trigonometric functions are differentiable at each point of its domain. $latex frac{d}{dx} sin x = cos x $ $latex frac{d}{dx} cos x = - sin x $ $latex frac{d}{dx} tan x = sec^2 x $ $latex frac{d}{dx} cot x = - cosec^2 x...
Power Supply The internal power supply is responsible for converting your standard household power into a form that your computer can use. The power supply is responsible for powering every device in your computer; if it has a problem or is of low quality you may experience many difficulties...
Classification of Computer System Classification according to Construction:-there are mainly three types of computer according to construction or work. They are: Analog computer: The computer which operated on continuous data of physical nature like, electric current, length, voltage, sound etc. Here, continuous data means the data whose value can...
     Introduction to Computer World Definition of computer: Computer is an electronic machine that can perform specific task given the user. The computer is a very important and useful device in almost all fields. Computer needs electricity to work therefore it is called electronic device. The computer is very faster than human and...
  Mensuration Formulas Mensuration is the branch of mathematics which deals with the study of Geometric shapes, their area, volume and related parameters. Some important mensuration formulas are:  Area of triangle(A) = $latex frac{1}{2} times text{base} times text{altitude}$ Area of triangle(A) = $latex sqrt{s(s -a)( s - b)(s - c)}$ where, a, b, c are sides of $latex Delta ABC$ and...
Before we can begin to write serious programs in C, it would be interesting to find out what really is C, how it came into existence and how does it compare with other programming languages. In this chapter, we would briefly outline these issues. Four important aspects of any language...