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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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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, 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) Whe..................[:=> 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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Assume that the lower position of the barrier is the default position. Now whenever the input to the motor driver IC is 10, it causes the motor to rotate, thereby causing the barrier to move such that it opens the entrance. Similarly, when the input to motor driver is 01, the motor rotates in the opposite direction to lower the barrier, thereby closing the gate. When the input to the motor driver is 00, the motor does not rotate.
When the car has completely entered the parking area, the input to the L293..................[:=> 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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C1 is connected to the clock pin of IC2 in IC1 except clock pin all other pins are kept low but in IC2 except clock pin and A2 pin all other pins are low. It helps the counter to count from 20 onwards. Here we are implementing a down counter which counts from 20. When 20 peoples had entered the theater the count reach 0 and the counting stops. When the count is stopped the door is closed until the show is completed. If the show is finished the door is made open for people to left from the theatre.
The output from both the counter is given to the two driver ICs respectively there are only four..................[:=> 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,
t System For Industries with Smoke Sensor
195. Project Name
196. Crystal-Controlled Time-Base Generator
197. Application
198. Micro controller based Dam control system for power Generation
199. FPGA based implementation communication modulation
200. Security Robot for Banks
201. Wireless chatting system using RF
202. VLSI Based Traffic Light System(VHDL)
203. PC controlled complete 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 Obje..................[:=> 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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34. Computer controlled LCD
35. microcontroller based bank token number display
36. PC Based Ac Motor SPEED Control Using (P.W.M Technique).
37. U.S.B. Connectivity To Micro Controller
38. Communication.
39. Mobile Car Stereo Player
40. Computer operated SUMMO robot (wired) Dc motor operated
41. Pyroelectric Fire Alarm
42. Car Control During Cardiac Arrest with GSM Reporting
43. Microcontroller based industrial abnormality indicator
44. PC Based Speed control of DC motor using PWM Technique
45. ON/OFF Control of Street Lights
46. Scholl Bell Management System
47. Microcontrol..................[:=> 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,
lation technique).
81. Fuel Reserve Indicator For Vehicles
82. Digital Thermometer
83. PIC microcontroller based highly intelligent water boat controller with automatic obstacle avoidance robot
84. (Solar Controlled Electric Device)
85. MICROCONTROLLER BASED Precision Temperature Sensing Using RTD
86. VLSI Based Traffic Light System(VHDL)
87. Gsm based home appliance control
88. Pacemaker Demonstration -Non-Microcontroller Based
89. DC Motor Speed Control Using Remote
90. Digital Object Counter (5v)
91. Pc based motor direction control
92. Season Based Automatic Streetlights S..................[:=> 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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he 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 <=:]


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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12 D1 11 DO 10 OE
HT9170B -18 DIP
HT9170D -18 SOP
DECEMBER 20, 1999
Pin Description
Pin Name I/O Internal Connection Description
VP I OPERATIONAL AMPLIFIER Operational amplifier non-inverting input
VN I Operational amplifier inverting input
GS 0
Operational amplifier output terminal
VREF 0 VREF Reference voltage output, normally VDD/2
XI I OSCILLATOR The system oscillator consists of an inverter, a bias resistor and the necessary load capacitor on chip. A standard 3.579545MHz crystal connected to XI and X2 ter¬minals implements the oscillator function.
X2 0

PWDN I ..................[:=> Show Contents <=:]

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