material with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor ’s terminals changes the current flowing through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power‚ a transistor can amplify a signal. Today‚ some transistors are packaged individually‚ but many more are found embedded in integrated circuits. Inside a transistor: a BJT (Bipolar Junction Transistor) transistor
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Sixty-one years ago last November‚ John Bardeen and Walter Brattain discovered the transistor at Bell Labs‚ in 1951. Before this‚ electronics used tubes‚ which happened to be extremely bulky‚ generated lots of heat‚ and had short life spans. The invention of smaller‚ more efficient‚ and more durable transistors brought a revolution in electronics. They became an important discovery that changed the world forever. The first ideas and experimentation with solid-state electronics began in 1874‚ but
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useful for electricity‚ which is just a large collection of electronics. By creating a voltage differential through something as simple as a battery‚ we can make electrons move‚ which is the entire basis of electricity. Moving electrons power the circuits that allow radios‚ televisions‚ lights and every other electronic device to work. Transistor * A transistor is the most basic part of a computer that has allowed for the creation of computer chips and has fueled the computer age. The transistor
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IES CATEGORY IV - ELECTRONICS AND TELECOMMUNICATION ENGINEERING Group A Services/Posts (i) Indian Railway Service of Signal Engineers. (ii) Indian Railway Stores Service (Tele-communication/Electronics Engineering Posts). (iii) Indian Ordnance Factories Service (Engineering Branch) (Electronics Engineering Posts). (iv) Indian Naval Armament Service (Electronics Engineering Posts). (v) Central Power Engineering Service (Electronics & Telecommunication Engineering Posts) (vi) Assistant
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ADC0803‚ ADC0804 ® Data Sheet August 2002 8-Bit‚ Microprocessor-Compatible‚ A/D Converters FN3094.4 Features The ADC080X family are CMOS 8-Bit‚ successiveapproximation A/D converters which use a modified potentiometric ladder and are designed to operate with the 8080A control bus via three-state outputs. These converters appear to the processor as memory locations or I/O ports‚ and hence no interfacing logic is required. The differential analog voltage input has good commonmode-rejection
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block diagram of Automatic Temperature Detecting system the 5v dc supply is used for each IC for working because every digital logic circuit requires 5v power supply to work .The main blocks o f Automatic Temperature Detecting system are: 1.2. Block Diagram Description: 1.2.1. Temperature Sensor Module: This Temperature sensor is placed at the starting of the circuit‚ it detects the temperature and gives the same as the input to ADC. 1.2.2. Analog to Digital Convertor: 3 The Analog to Digital
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Bridge Instruments Bridge Instruments Various types of bridge circuits are used in instrumentation. They can operate in either deflection mode or null principle. They give very high degree of accuracy. Bridges Instruments are used to measure • Resistance‚ Inductance‚ Capacitance • Purity of components • Impedances and admittances • Physical parameters Bridge Instruments Types of Bridges • • AC Bridge DC Bridge DC Current Bridge Instruments • Wheatstone bridge and
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Running head: Computers COMPUTERS BY Eunice 10/20/13 Introduction An English writer named Richard Braithwaite first recorded the word “computer” in his book entitled “The young man’s gleanings”. Computers are now the most common electronic device among individuals and businesses in the world. Computers serve as a means of solving sophisticated problems easily and quickly. Now the forensic science department also use computers in their investigations. And banks also stopped counting money
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older IDE‚ or parallel ATA‚ drive technology‚ or solid state drives. SATA drives use slimmer cables‚ smaller power connections‚ do not get as hot and can transfer data faster than the older drives. Motherboard * The motherboard is an underlying circuit board that holds all the computer components together. Computer components‚ including the CPU‚ RAM‚ power supply and hard drive‚ plug into the motherboard. This
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Click within an area to view details about that circuit. 1. Microcontroller Board - The standard 4760 prototyping board pictured above is populated with an Atmega644 microcontroller clocked at 20 MHz. The serial transceiver and DB-9 connector have been soldered on for debugging purposes. They remain
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