Tanu Das

What is a monitor   A monitor is a display device like a TV screen, that interprets and displays the graphical output signal from your computer’s   graphics card   and displays it on the screen.

What is a CPU? A central processing unit, also called a central processor, main processor or just processor, is the electroniccircuitry within a computer that executes instructions that make up a computer program.

                                Types of Computer We can categorize computer in two ways: on the basis of data handling capabilities and size. On the basis of data handling capabilities , the computer is of  three  types: Analogue Computer Digital Computer Hybrid Computer 1) Analogue Computer Analogue computers are designed to  process analogue data . Analogue data is continuous data that changes continuously and cannot have discrete values. We can say that analogue computers are used where we don't need exact values always such as speed, temperature, pressure and current. Analogue computers directly accept the data from the measuring device without first converting it into numbers and codes. They measure the continuous changes in physical quantity and generally render output as a reading on a dial or scale.  Speedometer  and  mercury thermometer  are examples of analogue computers. Advantages of using analogue computers: It allows real-time operations and computation at the same t

What is a computer?   A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs. These programs enable computers to perform an extremely wide range of tasks.