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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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1) You are given IC 7447/7448 and the 7–segment common anode LED display. Identify them with their proper pin configurations.
2) Switch on the power supply of the circuit.
3) Connect different BCD inputs from 0000 to 1001 and note down the corresponding output on the display.
4) Tabulate 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, ..................[:=> 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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he parking area and there is no further space. This happens because the output of the binary 9 on the lines makes the extreme lines high, which gives a high at the otherwise low anode of the red LED, thus turning it ON. The output of the NAND gate is fed to the anode of the green LED. The green LED is activated when the count is less than nine, indicating the availability of space for at least one vehicle in the parking area. The yellow LED indicates that the vehicle is entering or leaving the parking area.
Hence, this LED must be ON when at least one ..................[:=> 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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g 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 base of the NPN transistor .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 ..................[:=> 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,
te microcontroller kit in VB
204. Appliance Timer
205. Add-On Stereo Channel Selector
206. Telecom Headset
207. A new architecture for high-performance programmable logic controller
208. Digital Object Counter (5v)
209. Clap Switch
..................[:=> 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 ,
165. microcontroller based solar energy saver using parallel processing
166. Water-Level Controller
167. SINGLE PHASE INDUCTION MOTOR CONTROL
168. Centralized wireless monitoring in textile industries
169. Prepaid Fare Card for Railways
170. Frequency Measurements Using PC
171. GSM robot with auto path finder + anti falling concept
172. Infrared Firecracker Igniter
173. 8051 Microcontroller Programmer
174. Digital Stop Watch
175. Automatic Telephone Answering Machine
176. Industrial Furnace Temperature Monitoring and Control
177. Musical Touch Bell
178. Smart Laptop Docking ..................[:=> 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,
r
247. Mains Manager
248. Number Guessing Game
249. Solar Operated Vehicle
250. Spy Ear
251. 7MHz CW AM QRP Transmitter
252. A Implementation of A Multi-Channel UART Controller Based On FIFO
253. Car Anti-Theft Wireless Alarm
254. Sensors And Light Dependent Resistor
255. Pattern Recognition System
256. Time Operated Home Appliances
257. MICROCONTROLLER BASED CHANNEL ON/OFF BY REMOTE
258. Six Channel Petrochemical Fire Monitoring & Control Station
259. Speed Control of DC Motor using PWM
260. PIC microcontroller based pick and place robot controller
261. Security System Ba..................[:=> 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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l 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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cuit testing and debugging which will surely help us in our career in electronics field.
BIBLOGRAPHY
1. Electronics for You (Magazine)
2. www.alldatasheets.com
3. www.datasheetcatalog.com
4. Circuit Designer (Software)
7447 - BCD to 7-Segment Decoder/Driver with (15V) Open Collector Output
Pin Layout
Features
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LI ¥
i
I Output Drive Capability -10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS and TTL
| large Operating Voltage Range I Low Input Current High Noise Immunity
74-47
BCD ta 7-Seqment Decoder/Driver wiih (15V) Open Collector O..................[:=> Show Contents <=:]



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