C programmes complete
Complete set of full explained c language programs covering every topic.
Vishnu Vardan
Final C language notes
Complete c language notes with programs and self-explanatory notes.
Electronic devices and circuits important questions
Electronic devices and circuits important questions and it is based on previous year questions
ELECTRONIC TOLL COLLECTION SYSTEM
Today, due to the increase in the vehicles, there is a lot of gathering of the traffic at the toll booths. The main reason for this traffic at the toll booths is due to the manual working of the toll tax collection at the booths. Each vehicle on an average needs to stop at the toll booth for about a minute for the payment of the toll tax. In order to decrease this traffic we decided to work on the construction of a project which reduces the manual work and hence increases the vehicle speed passing by the toll booth. Also we decided to develop a project which allows the vehicles just to pass through the booth without stopping as a result reducing the traffic gathering at the toll collecting booths.
single walled carbon nanotube electronic devices
Carbon nanotubes are allotropes of carbon. They are CREATED by using different synthetic methods like chemical deposition,vapour deposition etc. They are considered, for study Purpose, to be formed by rolling 2D sheets of graphite in different configuration to get different types of carbon nanotubes. This can be represented by (n, m) notation of carbon nanotubes.(n, 0)represent zigzag CNT, (n, m) represent an armchair CNT,and any other combination represent a chiral CNT.
MISSILES AND THEIR GUIDANCE BY GPS
A weapon that is self-propelled or directed by remote control, carrying conventional or nuclear explosive."the plane disintegrated after being hit by a missile launched from the ground".basically there are three types of missile among them ballistic and cruise are there based on their mode of path.Ballistic Missile: ... Since it depends on gravity to reach its target, it's called aballistic missile. Ballistic missiles that fly above the atmosphere have a much longer range than would be possible for cruise missiles of the same size. Ballistic missiles can travel extremely quickly along their flight path.In other words, in a military context, a rocket is an unguided, rocket-powered weapon, with no steering ability. A missile is a self-propelled weapon, often rocket-powered (but not always), that has some kind of guidance system so that it can steerin flight, towards its target.
SINGLE ELECTRON TRANSISTOR
The concept of miniaturization, originated after the deliberation of a talk given by physicist Richard Feynman on 29th December 1959, led to the development of quantum dot (QD), which is the basic building block of single electron transistor (SET). SET is a new type of switching device used controlled tunneling of electron to amplify current. According to Moor’s law, SET may be alternative of complemented metal oxide semiconductor (CMOS) device for the next generation electronic devices and sensors. This is a review article intended to consolidate the knowledge on the working principle of SET along with relevant other aspects and also highlighting the promising applications with limitation of implementations in the 21st century in order to reduce power dissipation.
Smart dust 2
Advances in hardware technology has enabled very compact, autonomous and mobile nodes each having one or more sensors,computation and communication capabilities ,and a power supply. The Smart Dust project is exploring whether an autonomous sensing, computing and communication system can be packed into a cubic-millimeter mote to form the basis of integrated, massively distributed sensor networks. It focuses on reduction of power consumption, size and cost. To build these small sensors, processors, communication devices, and power supply ,designers have used the MEMS (Micro electro mechanical Systems)technology.
ULTRASONIC SENSOR
An ultrasonic sensoris a device that can measure the distance to an object by using sound waves. It measures distance by sending out a sound wave at a specific frequency and listening for that sound wave to bounce back. . It is important to understand that some objects might not be detected by ultrasonicsensors. Ultrasonic motion detection sensors are characterized by small power consumption, suitable cost and high sensitivity. The sensor is commonly used in home, office and car security systems.
HEARTBEAT MEASUREMEENT BY A FINGER TIP USING PIC MICROCONTROLLER
This project is designed to measure heart beat (pulse count), by using embedded technology. In this project simultaneously it can measure and monitor the patient's condition. This project describes the design of a simple, low-cost controller based wireless patient monitoring system. Heart rate of the patient is measured from the thumb finger using IRD (Infra Red Device sensor).
PRINTED CIRCUIT BOARD
The printed circuit board is the platform upon which microelectronic components such as semiconductor chips and capacitors are mounted. It provides the electrical interconnections between components and is found in virtually all electronics products. Once considered low technology, the printed circuit board is evolving into a hightechnology product. Printed circuit board manufacturing is highly complicated, requiring large equipment investments and over 50 process steps. Many of the high-speed, miniaturized printed circuit boards are now manufactured in cleanrooms with the same health and safety problems posed by other microelectronics manufacturing
WITRICITY
Wireless electricity is also known Witricity. Transmission of electrical energy from one object to another without the use of wires & called WITricity. WiTricity will ensure that the cell phones, laptops, iPods and other power hungry devices get charged on their own eliminating the need of putting them in and with every family member awning their cell phones, the drawn we overflowing with all sorts of wires. How many times have you wished there could be some way to do away with all the wiry clutter? When you are on the way to work and your cellphone beeps in career for a battery charge haven't you wished for your cellphone battery get self charged even better, because of WITricity some of the devices won't require batteries to operate. The Brain behind WiTricity is of Prof Marin Solack from Massachusetts Institute of Technology MIT is the one who has proved that magnetic coupled resonance can be utilized in order to transfer energy without wires What's even more interesting how he came about this idea Soljacic, justice any of us was fed up of his low battery beeping cellphone and wondered just lke any of us if there was a way to get rid of this 'charging problem'.