IT TOOLS || Introduction to Computer

Introduction to Computer

• The term "Computer" is derived from the Latin word "Computare" which means "to compute" or "to calculate."
• Computers are machines that perform tasks or calculations according to a set of instructions or programs.
• It is an electronic device used to store data and gives the results accurately within a fraction of second.
  

• Computers are extensively used everywhere.
• It mainly consist of four basic unit such as,

1. Input Unit
2. Storage Unit
3. CPU
4. Output Unit

• Classification of Computer

1. Analog Computer
2. Hybrid Computer
3. Digital Computer

• Analog Computer

1. An analog computer represents the data as physical quantities and operates on the data by manipulating the quantities.
2. It is designed to process data in which the variable quantities vary continuously.

Hybrid Computer

•  A hybrid is a combination of digital and analog computers.
• It combines the best features of both types of computers, i.e. It has the speed of an analog computer and the memory and accuracy of digital computer.
• It accepts analog signals, converts them into digital and processes them in digital form. A hybrid computer may use or produce analog data or digital data.
• It accepts a continuously varying input, which is then converted into a set of discrete values for digital processing.