Introduction


Light emitting diodes are advantageous due to their smaller size, low current consumption and catchy colours they emit. Here is a running message display circuit wherein the letters formed by LED arrangement light up progressively. Once all the letters of the message have been lit up, the circuit gets reset.

The circuit is built around Johnson decade counter CD4017BC (IC2). One of the IC CD4017BE’s features is its provision of ten fully decoded outputs, making the IC i ....etc

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LED-based moving-messagedisplays are becoming popularfor transmitting information tolarge groups of people quickly. Thesecan be used indoors or outdoors. Wecan find such displays in areas like railwayplatforms, banks, public offices,hotels, training institutes, nightclubsand shops.Compared to LEDs, liquid-crystaldisplays (LCDs) are easy to interfacewith a microcontroller for displayinginformation as these have manybuilt-in functions. But these can’t beobserved from a distance and largesizeLCDs are very costly.LED-based displays can be of two ....etc

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Please, help me in getting the circuit diagram of Accelerometer based message display. ....etc

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RESPECTED SIR/MADAM,
I am vamsi,mtech student of aditya college of engineering. i would like to develop a wireless lcd display board so please guide me the basics for that. waiting for your reply. thanking you,
yours sincearly,
Vamsi krishna ....etc

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kindly send the detail of this projects. so that i can complete my project i shall be highly thankfull to u ....etc

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Pict-Message Message Visualizer
Pict-Message is a project for people who wish to explore in an innovative and rather surprising way the different data feeds that form the building blocks of today’s virtual world. By pointing the application, let’s say, to the CNN news feed, you will receive the last news in real time - rendered in pictures. The application will choose for each in-coming word an image from flickr’s or google’s database tagged with corresponding keywords. Since the application searches and brow ....etc

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sir i require the synopsis of pic based moving message display...... can u help me with that. ....etc

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Message IntegrityandMessage Authentication


MESSAGE INTEGRITY


The cryptography systems that we have studied so far provide secrecy, or confidentiality, but not integrity. However, there are occasions where we may not even need secrecy but instead must have integrity.

Topics discussed in this section

11.1 Document and Fingerprint
11.2 Message and Message Digest
11.3 Difference
11.4 Checking Integrity
11.5 Cryptographic Hash Function Criteria

Doc ....etc

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program and circuit diagram of the 90c51 based led and keyboard interfacing... ....etc

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This LED-based message display isbuilt around readily availble, lowcostcomponents. It is easy to fabricateand makes use of 3mm red LEDs. Atotal of 172 LEDs have been arranged todisplay the message “HAPPY NEW YEAR2004.”The arrangement of LED1 throughLED11 is used to display ‘H’ as shown inFig. 1. The anodes of LED1 through LED11are connected to point A and the cathodesof these LEDs are connected to pointB. Similarly, letter ‘A’ is built using LED12through LED21. All the anodes of LED12through LED21 are connected t ....etc

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