- The number system with base 2 is known as
*binary number system*. - Two symbols/digit are used in it 0 and 1, which we called
**bits.** - Binary number system is positional number system, i.e. every position in a number has assigned some weight.
- Group of four bits is known as
**nibble**and group of 8 bits is known as**byte**.

Binary numbers are shown below,

**2-bit binary number representation :**

binary numbers |
decimalequivalent |

0 0 | 0 0 |

0 1 | 0 1 |

1 0 | 0 2 |

1 1 | 0 3 |

**3- bit binary number representation**

binary numbers |
decimalequivalent |

0 0 0 | 0 0 |

0 0 1 | 0 1 |

0 1 0 | 0 2 |

0 1 1 | 0 3 |

1 0 0 | 0 4 |

1 0 1 | 0 5 |

1 1 0 | 0 6 |

1 1 1 | 0 7 |

**4-bit binary number representation**

binary numbers |
decimalequivalent |

0 0 0 0 | 0 0 |

0 0 0 1 | 0 1 |

0 0 1 0 | 0 2 |

0 0 1 1 | 0 3 |

0 1 0 0 | 0 4 |

0 1 0 1 | 0 5 |

0 1 1 0 | 0 6 |

0 1 1 1 | 0 7 |

1 0 0 0 | 0 8 |

1 0 0 1 | 0 9 |

1 0 1 0 | 1 0 |

1 0 1 1 | 1 1 |

1 1 0 0 | 1 2 |

1 1 0 1 | 1 3 |

1 1 1 0 | 1 4 |

1 1 1 1 | 1 5 |

- Left most bit is known as
right most is*Most Significant Bit (MSB)*and*Least significant bi*t(LSB).

for example: 1010

here , - In any number, zero can be added to left most side of the number ,which does not effects it value.

for example,In floating point,

plz ye proper calculation kar dy meri basic weak hy bahot zeyada