Advantages:
1) In case of digital volt meter the output signals is available in the form of discrete numerical. Where as in analog voltmeter, output is made available by using pointer deflection on a continuous scale. 2) It has high speed. 3) Digital voltmeter can be programmed. So controlling by computer is achieved. 4) It has automatic range selector. 5) It has overload indication. This is indicated by an additional leading digit. Usually this digit is 1. 6) Accuracy can be made as high as +- 0.005 percent. 7) It provides a good stability. 8) It gives better resolution. For example can be read on 1 volt input range. 9) The internal calibration does not depend on the measuring circuit 10) Output signal can be recorded. 11) By using a suitable transducer the quantities such as temperature, pressure, etc. can also be measured.