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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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abulate the readings
Brief theory – to display the data, we have to convert it from BCD to 7-segment code. The IC makes this process. It has four inputs called BCD inputs and seven outputs to drive the display.
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..................[:=> 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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coder and flip-flops, which are used for sequence detection. The 74155 dual 2:4 decoder receives its select signals at pins 13 (A) and 3 (B) from the receivers LDR1 and LDR2 respectively. The other decoder is not used. The output lines of the enabled decoder are active low.
For convenience, the receiver before the entrance to the gate is connected to pin 13 of 74155. In default state, each receiver is active and inputs zero to the decoder, making the Y0 output line low.
When the first sensor is blocked, the Y1 l..................[:=> Show Contents <=:]



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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ush of people in theatre and also to reduce the malpractices which are held in theatre.
This project had made successful with help sufficient components like LDR, Optocoupler, TIP122, relays, S-R flip flop, counter ic 4510,driver ic 7448,7 segments, power supply etc.
INTRODUCTION
We are proudly introducing to you an “AUTOMATIC DOOR SYSTEM” with down counter display. We apply this project in theater. We can use this with the help of a light depending resistor. Which act as sensor, it senses a person reach at the door when the sensor cut and the door will be opened. And the door is..................[:=> 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,
rcom-Cum-Telephone Line Changeover Circuit
155. Wireless Biomedical Monitoring System
156. Electronic Watchdog
157. Automated Alarm Circuits
158. Automatic Flow Meter Maintenance
159. uC Inveter
160. Microcontroller Based Temperature Indicator
161. Faster Finger First Indicator
162. Hearing Aid
163. Pipe-Length Measurement for HDPE Plants Digital Based
164. Depth Of The Medium Based On Attenuated Reflectance
165. Color Sensor
166. Access Control Door Opener
167. POWER HOUSE MONITORING THROUGH RADIO FREQUENCY
168. Transport Traning System Using DTMF & Receiver Reporting To PC
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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 ,
ASED Lift control System
82. Built Your Own Multi-Frequency Digital Signal Generator
83. Optimized Software Implementation of a Full-Rate IEEE .a
84. Safety assurance in process control
85. HYDRO ELECTRICITY
86. House Cleaning Robot
87. Mobile control irrigation control with feedback system.
88. Solar Lighting System
89. Auto hook up circuit for mobile phones.
90. Traffic Baton
91. Heat Sensitive Switch
92. Auto path finder + anti falling mechanism
93. Under-/Over-Voltage Beep for Manual Stabiliser
94. Stepper Motor Based Valve Controller
95. Automatic Power Distribution
96. ..................[:=> 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
automated vehicle identification and toll pass system, project on smoke sensor using microcontroller 8051 , project report on low cost rain gauges detectors, pic microcontroller based cardiac pacemaker , 4 digit 7 segment multiplex display, final year project on conductivity meter , pyroelectric fire alarm using 89c51 8051, melody generator pic controller , walking stick with heart attack 8051, documentation of ionizer mains 230v ac , 65 digital thermostat with lcd temperature display, parallel telephone with secrecy and call prevention using scr , coding for greenhouse robot using pic microcontroller,
. Slave Robot
117. Home Automation Through PC.
118. PIC microcontroller based password locker for highly secured areas
119. Power-Supply Failure Alarm
120. 4- Direction Obstacle /Object Detector & Multi Phonic Indicater for Blind
121. Energy Theft Detection using Microcontroller
122. Digital Energy Meter
123. Microcontroller based high end smoke detection
124. Static Rom Using VHDL
125. PC Based Ac Motor SPEED Control Using (P.W.M Technique).
126. Design and implementation of orthogonal frequency division multiple access
127. Electrical Equipment Control using Voice - Wired
128. M..................[:=> 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 simpl..................[:=> 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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to UM 66 which is a tone generating IC. According to the output of the driving circuit, UM66 generate the required tone. Transistor T2&T3 get sufficient amplification to the circuit.
To reset the audio section we made the output of DTMF receiver is 0000
THE PRINTED CIRCUIT BOARD
The first step in assembling is to procure a printed circuit board. The success of a circuit also depends on the PCB. When cost is concerned more than 25% of the total cost is gone for the printed circuit board design and fabrication.
The board is designed using a personal computer. Using the software ORCAD, the l..................[:=> Show Contents <=:]



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