Subject: Logic Design

Topic: Biasing of BJT

Difficulty: Medium

$\underline{ANALOG \ \ SIGNAL}$:-

• It is an electrical signal where amplitude varies continuously over a specified range of time

• It can take infinite values within the specified range of time

• Sine wave is the example of analog Signals

$\underline{DIGITAL \ \ SIGNAL}$:-

• -It is an electrical signal which amplitude varies in discrete a specified range of time
• It can take only two discrete Values within the specific range of time
• Square wave is the example of digital system

$\underline{Analog \ \ System}$:-Analog Signal are process in analog system

• Accuracy is less
• Distortion is more
• System is less versatile
• Memory is not available
• Effect of temperature & ageing on performance
• Effect of noise is more
• eg:- Amplifiers, Power amplifiers, global generators etc
  is more

$\underline{Digital \ \ System}$:--Digital signals are processed by digital system

• Accuracy is more
• Distortion is less
• System is more versatile
• Memory is available
• Effect of temperature & ageing on performance is less
• Effect of noise is less
• ex:- Registers, API, Counters