INTRODUCTION OF DIGITAL SYSTEM

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Presentation transcript:

INTRODUCTION OF DIGITAL SYSTEM CHAPTER NO-1 INTRODUCTION OF DIGITAL SYSTEM

SIGNALS The signal are classified into two categories. 1. Analog signals:- They vary continuously with time. 2. Digital signals. They are not vary continuously with time. They are discrete with time.

Systems Analog Systems: The system which required analog signals. Ex- filters, amplifiers. Digital Systems: The system which required Digital signals. Ex- flip flop, shift register, timer, counter.

Analog system Disadvantages:- Less accurate Less reliability Storage & processing data is not possible Their parameter change with time. System affected due to noise.

Digital system Advantages The have more accuracy. Highly reliable system Less affected by noise. Information can be stored Design is easier. The are less affected by variation of temperature.

Disadvantages : The real world is analog in nature that’s why convert the analog signal into digital form. Process digital signals. Again convert digital output into analog form. Additional hardware is required Increases the cost.

Objectives 1. Compare analog signal over digital signal with following parameters Accuracy Reliability Versatile Cost Signals Systems 2. List advantages & disadvantages of digital signal.