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Study the working decoder for conversion of BCD into 7segment display code

Posted by: seminar class
Created at: Friday 13th of May 2011 06:11:02 AM
Last Edited Or Replied at :Friday 13th of May 2011 06:11:02 AM
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l segments of the display will glow to show decimal 8 and outputs abcdefg = 0000000 and so on.
Conclusion –
1) When corresponding BCD inputs are applied from 0000 to 1001, we get decimal output on the display from decimal 0 to decimal 9.
2) The tails of ‘6’ and ‘9’ are not displayed on the display.
3) To display the tails of ‘6’ and ‘9’ IC 74247 is required.
4) In common anode FND 507 type display, the anodes of all LEDs are connected to a common line and connected to +5V regulated power supply. The cathode of each LED segment is used as input from ‘a’ to ‘..................[:=> Show Contents <=:]

Automatic car parking system

Posted by: seminar project explorer
Created at: Monday 14th of March 2011 06:35:25 AM
Last Edited Or Replied at :Friday 12th of October 2012 02:54:42 AM
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When the first sensor is blocked, the Y1 lines goes low. The low-going Y2 line indicates that only the second sensor is blocked. A low Y3 line indicates that both signals have been blocked. Refer truth table of the IC 74155. The four output lines act as control and decoding signals for the remaining circuits.
The sequence detection logic circuit consists of three flip-flops for detecting the incoming as well as the outgoing vehicles. The Y0 line is connected to the clear lines of all the flip-flops, which gives zero at their respective outputs. The vehi..................[:=> Show Contents <=:]


Posted by: seminar class
Created at: Monday 28th of February 2011 02:22:18 AM
Last Edited Or Replied at :Thursday 04th of April 2013 11:34:57 AM
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The driver IC is used to drive a 7SEGMENT display.
Display is used to display whatever is counting in the counter.
Buzzer is using to indicate the counting process.
A power supply is used for providing the required power to the circuit, on the bases of the supply the LDR works. The LDR works on the principle that when the light is falling frequently, the resistance becomes LOW and when the light is dropped the resistance become high. As the resistance is high the voltage produced is 0v. The 0v is fed to the ..................[:=> Show Contents <=:]

digital electronics project

Posted by: project topics
Created at: Wednesday 29th of December 2010 06:53:16 AM
Last Edited Or Replied at :Friday 23rd of November 2012 02:14:52 AM
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Web-Based Real-Time Monitoring and Control System for a Hybrid
35. Infrared Burglar Alarm With Timer
36. Digital Mains Voltage Indicator
37. microcontroller based touch operated industrial gate controller
38. Sun Tracking System For Solar Panels
39. Digital Compass/Navigation
40. DC Motor Speed Control using PC serial port
41. Microcontroller based Automatic railway gate control
42. Electronic Dice Using AT89C2051
43. Electronic Voting M/C
44. Over Speed and Drunken Drive Indicator
45. A method for improving the robustness of PID control
46. Multi-Melody Generator With Instrument..................[:=> Show Contents <=:]

electronics project design

Posted by: project topics
Created at: Wednesday 29th of December 2010 06:52:46 AM
Last Edited Or Replied at :Wednesday 29th of December 2010 06:52:46 AM
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g Ultrasonic Technology
53. Atmega based DC motor conversion into a stepper motor
54. microcontroller based two wire eight load controller
55. Temperature Sensitive Fan
56. Ir- To- Rf Converter
57. Automatic rain fall detector
58. 8051 Programmer
59. Low cost PCO Billing meter
60. ADC Kit
61. microcontroller based security systems in restricted areas
62. IR Remote Switch
63. PC Based Single Channel Data Acquisition
64. Brake Failure Indicator
65. Telephone Call Meter Using Calculator And COB
66. IR Remote Switch using TV remote
67. Interfacing IBM Key Board To Micro Control..................[:=> Show Contents <=:]

electronics project for final year

Posted by: project topics
Created at: Wednesday 29th of December 2010 06:24:05 AM
Last Edited Or Replied at :Wednesday 29th of December 2010 06:24:05 AM
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103. Digital Over Load Indicator For Vehicle
104. Smart Hearing Aid
105. IVRS Microcontrollers Based
106. it’s Applications
107. Laser Torch-Based Voice Transmitter And Receiver
108. Built Your Own Multi-Frequency Digital Signal Generator
109. Long-Range IR Transmitter
110. Load Shedder (uC Based)
111. Simple Low-Cost Digital Code Lock
112. Airplane Speed Recorder
113. Maze Solving Robot
114. Frictionless Electromagnetic Breaking System
115. Electronic Motor Starter
116. Slave Robot
117. Home Automation Through PC...................[:=> Show Contents <=:]

Simple digital stopwatch using at89s51 Microcontroller

Posted by: project report helper
Created at: Thursday 14th of October 2010 05:57:00 AM
Last Edited Or Replied at :Tuesday 19th of March 2013 02:19:53 AM
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Simple digital stopwatch using at89s51 Microcontroller

Here's a simple digital stopwatch with AT89S51 microcontroller. Two common cathode type 7segment displays are used to displa..................[:=> Show Contents <=:]


Posted by: project report tiger
Created at: Thursday 04th of March 2010 03:43:51 AM
Last Edited Or Replied at :Thursday 04th of March 2010 03:43:51 AM
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frequency to the internally generated signal frequency. This coded form is converted to binary equivalent by the code modulator section. This signal is fed to output.
In decimal display unit, the output of DTMF receiver is converted into its equivalent 7-segment decimal format. IC 7447 is used for decoding into decimal format. IC7447 is a binary to decimal converter. The output of is given to FND display system. Here the resisters are used to limit the current through the FND.
Vcc=5 Vd=1.5v Id=10mA R = /Id R = /10*103 R= 350 Q Use 330 Q
BINA..................[:=> Show Contents <=:]

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