Computer is a very useful device. The computer stores all types of instructions given by the user for calculation such as numbers, numbers, text, graphics, pictures, etc. All these data and instructions are different, but the computer stores all these data and instructions in binary language. Binary is the language of a machine whose base is just two numbers - 0 and 1. All the instructions given by the user are converted to 0 and 1 in binary language. This process is called data representation. There are two methods for data representation -
1. Analog verbs
2. Digital Activities
Analog Operations
Analog verbs are based on a continuously variable signal. Numbers are not used in these. Analog functions are used in many fields of science and engineering as physical quantities are used more in these areas such as speedometer, odometer, voltmeter, thermometer etc.
Digital Operation
Modern computers are made by digital electronic circuits. The main part of this circuit is the transistor which operates in two stages 0 and 1. These two stages that express data in a computer are collectively called binary number systems.
A system is created to store binary data, the smallest unit of which is bit.
4 bits = 1 nibble
8 bits = 1 byte
1024 bytes = 1 kilobyte (KB)
1024 kilobytes = 1 megabyte (MB)
1024 megabytes = 1 gigabyte (GB)
1024 gigabytes = 1 terabyte (TB)
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