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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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For common anode LED display, the decoders used are IC 7446, IC 74246, IC 7447, IC 74247 etc. They have active low, open collector outputs.
And for common cathode LED display, the ICs are IC 7448, IC 74248, IC 7449 etc. They have active high, open collector outputs.
Working of the circuit –
1) When BCD inputs from 0000 to 1001 are applied at the input terminals, the IC produces equivalent outputs at its output terminals from a–g. The 7–seg display is common anode type.
2) Suppose BCD input is DCBA = 0101. It is equivalent to decimal 5. This input is converted into equiv..................[:=> 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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The transmitter section comprises of two light emitting diodes which transmit high power light beams. These light beams are incident on the receivers, which produce an output of zero volt if the beam received is uninterrupted and +5V if the beam is interrupted by a car. These receivers are the Light Detecting Resistors which are arranged in such a manner so as to detect the light even after the obstacle between the sensor and receiver passes through. The working of the sensors is based on the voltages across collector, emitter, and base respectively.
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AUTOMATIC DOOR In theatres WITH DOWN COUNTER DISPLAY


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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counter is set based on the seat of theater using a button. And one person entered the counter get decremented .when all the seats are occupied by viewers the counting system stop. and it indicate ‘HOUSEFULL’ by using a LED and the door is closed permanently. So no one can enter the theater until the show is finished.
The main advantage of this project is to reduce the rush of people in theater no malpractice held. It also can use in high secured function and other meetings.
BLOCK DIAGRAM DESCRIPTION
POWER SUPPLY

The power supply is used for providing the required power for driv..................[:=> 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
single chip timer with digital clock and calender, multi melody generator with instrumental effect , a single chip timer with digital clock and calender, nending machine project in vhdl , staircase climbing robot rf controlled kit price, vending machine using vhdl project , a single chip timer with digital clock and calendar project, www indvidval com , 4 digit 7 segment multiplex display, vhdl fpr cw receiver , electronic voting m c vhdl code, plc based object counter using conveyor belt , electronic dice using at89c2051, wireless biomedical monitoring system , digital electronics, digital electronics project , digital electronics project ideas,
d Energy Meter
3. High and Low Voltage Cutout With Delay and Melody
4. Polygraph
5. Fastest Finger First Indicator
6. Design of Wind Turbine Generator Control System
7. PC-Based Oscilloscope
8. Implementation of Fragile Speech watermarking.
9. Automatic Bottling and Filling System in Industries
10. Ultra Bright LED Lamp
11. Pre-Paid Car Parking System
12. Automatic Lightning Control of a Warehouse
13. Automatic Bottling And Filling System Design Using Microcontroller
14. Auto- braking, auto -cleaner, anti-falling robot
15. Direction Control of Stepper Motor
16. 9-Line Telephon..................[:=> 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
programs for voters identification system using labview , dynamic temperature indicator and controller project, who s first game indicator , ppt finger impression based ration card system, metronome program vhdl , electronic voting m c vhdl code, temperature controlled water bath , atmega16 asm program for mobile controled robot, design of automatic off timer for cd players , thermistor thermometer 7 segment vhdl project, cardiac arrest auto car control using gsm , fuse cum power failure indicator, bank token apparatus ,
+ Solid State Voice + PC Logging]
131. Auto braking system with auto path changer
132. Wheel Angle Indicator
133. Shortwave Transmitter
134. Keeps distance warning system.
135. Temperatures Indicator & Controller Using AT89C51
136. Control the mechanical river with the help of infra red rover
137. Fastest Finger First using SCR
138. Automatic Door Opening Using PIR Sensor
139. Remote Controlled Switch Board
140. Safety Guard for The Blind
141. DRAM design (VHDL).
142. communication systems
143. Temperature Control System For Furnace With Alarm
144. Mobile Cellphone Charger
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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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Tester
94. -Line Telephone Sharer
95. Encryption Standard Network Security
96. Stress Meter
97. A VHDL Model of IEEE. Smart Sensor: Characterization and application
98. Railway Accident Monitoring System
99. Uc Based Phase Management
100. Musical Touch Bell
101. THERMOSTAT CONTROLLED SOIL HEATING
102. MICROCONTROLLER BASED PROGRAMMABLE EXAM TIMING ALARM
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 Digi..................[:=> 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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[attachme..................[:=> Show Contents <=:]



TELEPHONE OPERATED CALLING SYSTEM full report


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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specified according to the current carrying capacity of the circuit.
Etching
It is the process of removing unwanted copper from the processed board using etching solutions. In order to do this, the pcb is dipped into the etching solution which is ferric chloride solution. Once the unwanted copper has been displaced into the solution the pcb is taken out and dried.
Drilling
The holes of mounting components are drilled using a mechanical hand drill. The holes of IC pins are drilled with .8mm drill bit and all other holes are drilled with 1mm drill bit.
COMPONENTS LIST
COMPONENTS SPECIFICAT..................[:=> Show Contents <=:]



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