| Analog instrument | Digital instrument | 
|---|---|
| The instrument which gives output that varies continuously as quantity to be measured is known as analog instrument. | The instrument which gives output that varies in discrete steps and only has finite number of values is known as digital instrument. | 
| The accuracy of analog instrument is less. | The accuracy of digital instrument is more. | 
| The analog instruments required more power. | The digital instruments required less power. | 
| Sensitivity of analog instrument is more. | Sensitivity of digital instrument is less. | 
| The analog instruments are cheap. | The digital instruments are expensive. | 
| The analog instruments are extremely portable. | The digital instruments are not easily portable. | 
| The resolution of analog instruments is less. | The resolution of digital instruments is more. |