Analog And Digital Meter Instruments And Differences
What is Analog and Digital Instruments
Today instruments are made using two types of techniques to measure electrical quantities such as voltage and current two types of instruments they were Analog And Digital Meter Instruments
1.Analog Instruments

Analog Instrument refers to the quantity of electrical quantities to be measured by moving the associated pointer over a scale by the mechanism of a mechanical meter. That is, the quantity measured according to the deflected position of the pointer (analogous to deflection) is calculated
This tool is packed with physical components such as magnet, spindle, pointer, spring so that its shape is large
These types of instruments are not very accurate and consume more power compared to analog meters. Again, if there are small changes in this type of instrument, there is a parallax error. Therefore digital instruments are used where high accuracy is required
Disadvantages
- Lack of accuracy
- Resolution is low
- parallex error
2.Digital Instruments

A digital instrument is an electronic circuit that uses electrical components such as ICs to sensor quantities, measure and measure them, and display them as discrete numbers, ie digits, on associated display devices
This type of meter does not have any mechanical system. All instruments are made up of solid state devices. It is small in size as it does not have any physical tools like pointer or magnet
Advantages Of Digital Instruments
- Measures are available directly because human error is low
- Its dimensions are measured in decimal numbers This feature is not available on analog meters
- The higher the input impedance in digital meters, the lower the loading effect
- Its output is in digital numbers so it can be fed directly to memory devices such as tapes and printers
- Digital instruments, like analog meters, consume less power
- Measurable dimensions of digital meters are measured in less time but analog meters take longer
- Readings are taken very quickly on the digital meter
Comparison between analog and digital instruments
SI.No | Digital instrument | Analog instrument |
1 | Displayed by measured quantity numbers | Is defined on a scale by the deflection of a measured pointer |
2 | High accuracy | Low accuracy |
3 | Does not cause a loading effect for the | circuit to be measured | Causing a loading effect on the circuit to be measured |
4 | No observation errors | Observation error is high |
5 | Range is high | Low range |
6 | High costly | Low cost |
7 | Readings are stored | Not stored a readings |
8 | High resolution | Low resolution |
9 | High Speed of reading | Low speed of reading |
10 | No reading error | Reading error is high |
11 | Used in any position | Only one position to be used |