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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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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 equivalent 7–seg code by the IC and its outputs abcdefg = 0100100. For the input DCBA = 1000, all segments of the display will glow to show decimal 8 and outputs abcdefg = 0000000 and s..................[:=> 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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COUNTER AND DISPLAY SECTION

This section consists of up/down counter IC 74193, BCD to 7 segment decoder, display driver IC 4511 (to drive a common cathode 7 segment display) and three LEDs (red, yellow and green).
The counter IC 74193 is capable of handling up as well as down counts if configured for the same. The count is incremented by one when a rising edge is encountered on the up pin (pin 5) and decremented by one when a rising edge is encountered on the down pin (pin 4) of the circuit, the ..................[:=> 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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sistor .so the transistor maintains in off state. From the transistor voltage is fed to the optocoupler as the transistor is in off state no current is produced so the coupler will not work and 0v output formed is fed to the tip. A tip is connected to the output of the optocoupler which needs 5v to work as the optocoupler is failed to produce 5v output the tip does not work. The tip is connected to the relay which act as a switch it has two conditions normal close and normal open initially it maintain in the normal close state when there is no current to reach it changes to the normal open sta..................[:=> 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,
Transport Traning System Using DTMF & Receiver Reporting To PC
169. Sound Pollution Control
170. Cordless FM MIC
171. Music On-Hold For Telephones
172. Implementation of Speech compression using DWT
173. Remote Voting Through Telphone with Wirelss Winner Declaration
174. Atmel AVR ISP Dongle
175. Power Supply failure alarm
176. On The Design Of A Multi-Mode Receive Digital-Front-End For Cellular
177. Micro Controller based wireless automation of Power Substation using GSM techniques
178. Mind Reader
179. Railway Automation.
180. DTMF Receiver IC MT8870 Tester
181. HOTEL POWE..................[:=> 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 ,
imer-Cum-Clap Switch
100. Water level Controller cum Motor Protector kitAug
101. Better Noise Performance
102. Microcontroller based fuse blown alarm
103. Electrical Apparatus Control System In A Plant Using RF Wireless
104. Automated Vehicle Identification And Toll-Pass System.
105. Pc based wireless home automation
106. Automatic PH Control using Microcontroller
107. Frictionless Electromagnetic Breaking System
108. -Step Digital Power Supply
109. Mains Supply Failure Alarm
110. Dynamic Temperature Indicator Controller using uC
111. Hand Clap Electronic Control
112. Schedulin..................[:=> 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,
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.
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
12..................[:=> 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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peration:
• The display will show 00 at the startup
• Press the switch SP1 to get the watch to run
• Press the switch again to stop the watch
• To start the watch press the same switch again
..................[:=> 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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ing
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 SPECIFICATION QUANTITY
DTMF RECEIVER IC HT9170 1
DECODER IC LS7447 1
7 SEGMENT DI..................[:=> Show Contents <=:]



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