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Category Archives: Digital Electronics

  1. [TC] Water Level Indicator with Alarm using 8051 Micro controller (AT89C51)

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    December 27, 2013 by MrJSY


    This article illustrates the construction and working of a liquid/water level indicator. Such an indicator is used in tanks to indicate …
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  2. [TC] Receipt Printer With Raspberry-Pie

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    September 26, 2013 by MrJSY


  3. [TC] Electronics Engineers Wedding Invitation Card

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    July 31, 2013 by todayscircuits


  4. [TC] Secure Digital Access System using iButton

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    June 14, 2013 by todayscircuits


    Access control forms a vital link in a security chain. Here we describe a secure digital access system using iButton …
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  5. Digital Microwave Communications

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    June 2, 2012 by todayscircuits


    Microwave is a kind of electromagnetic wave. In a broad sense, the microwave frequency range is from 300 MHz to …
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  6. 7 Segment LED Counter

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    November 7, 2011 by todayscircuits


    This simple counter can be used to count pulses, as the basis for a customer counter (like you see at …
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  7. Digital Direction Compass

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    August 31, 2011 by todayscircuits


    Circuit Diagram :   Direction :

  8. >Boolean Logic

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    June 14, 2011 by todayscircuits


    > Boolean Logic In this article, the basics of Boolean Logic is explained Boolean Logic In this article, the basics …
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  9. >Logic Gates

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    June 14, 2011 by todayscircuits


    > There are mainly 7 types of logic gates that are used in expressions. By combining them in different ways, …
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  10. >Half Adder and Full Adder

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    June 14, 2011 by todayscircuits


    > Half Adder With the help of half adder, we can design circuits that are capable of performing simple addition …
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