Ppt Digital Electronics
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Ppt Digital Electronics



The Presentation which I delivered in the RECKON TechFest Presentation rounds in my B.Tech. 2nd Year

The Presentation which I delivered in the RECKON TechFest Presentation rounds in my B.Tech. 2nd Year



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    Ppt Digital Electronics Ppt Digital Electronics Presentation Transcript

    • DIGITAL ELECTRONICSAdvantage, Scope & Future Possibiltities Made By : Naval Kush (Elex. & Comm. Engg.) IVS – IT, Mathura
    • What is Digital Electronics ? ? ? Digital Electronics is that branch of electronics which deals with the digital signals to perform various tasks and meet various requirements ! It is based upon the digital design methodologies and consists of digital circuits, IC’s and logic gates. It uses only binary digits, i.e. either ‘0’ or ‘1’ !
    • Why was digital electronics needed?? Most analog systems were less accurate, and were slow in computation and performance. Digital system have the ability to work faster than analog equivalents, and can operate on very high frequencies too ! ! ! ! ! It was much economical than analog methodologies as the performance was faster !
    • Digital Systems : The 21st Era Basically, the 21st era systems uses Silicon wafers, IC’s, CMOS etc. in the VLSI technology to build up the large scale electronic devices & machines. The most commonly used devices are the Data servers, GPS systems, Security systems, market products like Bar Code Readers etc. ! All these devices are precise and reliable except the user makes his own mistake, i.e. in these devices, system errors are least possible. The Cost : Performance ratio is high, hence these are economically beneficial too !
    • What are Integrated Circuits (IC’s) ??? IC’s are the micro circuits which are fabricated on a very small silicon wafers (chip) at which various components like BJT, CMOS etc. are mounted up to make a wholesome functional unit. These days, various types of circuit integrations are possible at large extent, i.e. small scale, large scale, and very large scale integration (VLSI).
    • What are Logic Gates ????? Logic gates are the basic blocks of the digital circuits. There are basic gates of three types viz. AND, OR & NOT. Two universal gates are made of these 3 basic gates, which are NAND gate & NOR gate. These gates are the basic functional blocks of digital circuits which work upon making combinations of 0’s and 1’s ! These are the sub- components of the IC’s !
    • CMOS – The basic building block of IC’s today!!! The C-MOS (Complementary Metal Oxide Semi-conductor) is the basic building block of IC’s today. It is a combination of a p- channel MOSFET and a n- channel MOSFET as described in the figure. These days, it is being used widely because it has the least power dissipation in all the components available for fabrication today !
    • Why CMOS dissipates less power?? In CMOS structure, when n- MOS is on, the p-MOS is off, and when p-MOS is on, the n-MOS is off ! Thus, the structure of CMOS does the work of two transistors, consuming the less power of only one transistor (MOSFET). This shows the reason why CMOS is being used at a large scale today. It is used to make the logic gates.
    • Example of Advantage of DigitalSystems over Analog Systems : The most common present time example is the speedometers used in vehicles. In analog meters, there is an error chance of misreading the speed, while in the digital seven-segment display of a digital speedometer, there is no chances left for a misreading error, hence increasing the accuracy ! Even in the digital meters, there is a ‘HOLD’ button to hold the display value on screen.
    • (Analog Vs Digital) Electronics !! Analog Elex.  Digital Elex. It has usually larger  It has smaller integrated circuits & occupies more circuits & occupies lesser area. area. Analog measuring instruments are less  Digital measuring accurate, chances of instruments are more misreading are more. accurate, and there is no The instruments are case of misreading it. delicate and harms are  The instruments are more more in case of drops strong, and there are and falls. lesser harms on drops and falls.
    • Data Transmission using Digital Systems…… The digital system send the data in the form of packets of digital codes, thus we can encode and decode them in various formats and codes. Data encryption is also possible in the digital systems, hence the data transmission is more secure, and can be manipulated in many formats ! Digital systems are much advantageous in communications
    • Future Scopes & Possibilities OfDigital Electronics : The digital electronics uses VLSI technology, which has considerably decreased the size and area of the circuit boards, and has enhanced the accuracy and performance of the systems. Moreover, digital systems have the advantage of data encryption for the communication purposes ! The data transmission is safe and secure. All these factors clearly show that the digital electronics stream has wide future scope in the modern era !