THE ROLE OF INVENTIONS AND DISCOVERIES IN THE ESTABLISHMENT OF RADIO This write up discusses the role of inventions and discoveries in the establishment of radio. However some attention would first be directed to explaining the importance and uses of radio and radio waves as a communication device before diverting focus to discuss some inventors who played significant roles in establishing radio. The discussion will as well highlight some modern developments in the radio industry. Radio continues
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Operational amplifier - Wikipedia‚ the free encyclopedia http://en.wikipedia.org/wiki/Operational_amplifier Operational amplifier From Wikipedia‚ the free encyclopedia An operational amplifier ("op-amp") is a DC-coupled high-gain electronic voltage amplifier with a differential input and‚ usually‚ a single-ended output.[1] An op-amp produces an output voltage that is typically hundreds of thousands of times larger than the voltage difference between its input terminals.[2] Operational amplifiers
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Letter of Motivation I‚ Md. Junayed Sarker very much encouraged with the statement that “Quality Education is the key things to build up an apposite and sustainable career”. I’m convinced that practical and pragmatic based career is quite impossible without a strong base as well as hard work. Therefore my intent is to establish me as a successful pollster through hard work‚ devotion and best utilization of my talent which will give me an opportunity to contribute in the advancement of technology
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Computer Memory Basics Although memory is technically any form of electronic storage‚ it is used most often to identify fast‚ temporary forms of storage. If your computer’s CPU had to constantly access the hard drive to retrieve every piece of data it needs‚ it would operate very slowly. When the information is kept in memory‚ the CPU can access it much more quickly. Most forms of memory are intended to store data temporarily. As you can see in the diagram above‚ the CPU accesses memory according
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the peaks in cycles per seconds‚ referred to as Hertz (Hz). Additionally‚ with digital signals‚ there are two states: ‘off’ or ‘on’ that occur when there is a change in light levels. These signals are sent in a continuous flow and are measured in megahertz per second. This is similar in concept of the two hands of a clock that are constant in motion and represent time. 1 Both frequency and amplitude can be used to encode data.2 An example of analog to digital is the process of faxing. The user
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difference in hertz between the highest frequency the signal uses and the lowest frequency it uses. A typical voice signal has a bandwidth of approximately three kilohertz (3 kHz); an analog television (TV) broadcast video signal has a bandwidth of six megahertz (6 MHz) -- some 2‚000 times as wide as the voice signal. The Advantages of Higher Bandwidth Frequencies File upload and download transfers and the speed at which they complete are related to a bandwidth’s capabilities. Though bandwidth does not
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food. Microwaves are a type of electromagnetic waves that place between radio waves and microwaves on the electromagnetic spectrum. The longer the wavelengths‚ the lower the energy frequency. A typical microwave oven has a wave frequency of 2‚ 450 megahertz (M. Brian‚ 2000). Water‚ sugar and fats only absorb waves in this frequency range‚ which makes it perfect for food. So although microwaves have a lower frequency than visible light does‚ it is still able to heat up the particles in the food. This
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RAM‚ controller… Fig 4: the motherboard (5) Microprocessor: it is the brain of the computer.it means that all the operation on the computer are made by the microprocessor. It is also known as CPU (central processing Unit).it can be measured in megahertz (MHz) or in Gigahertz depending of computer. the performance of the microprocessor is so important that it is essential to any customer to be aware of the number of calculations it can perform before buying a computer [23]. for example‚ Dell Optiplex
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Introduction to computer Basics Background This topic will discuss the introduction to the use of the computer in the business area‚ including the basic hardware and software concepts. Information technology (IT) is one of the key resources in the modern business environment. We have lived during the past 20 years in a period that has strongly emphasised the strategic importance of information technology. Consequently‚ those currently involved in management have a clear vision of the technology’s
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MOTHERBOARD [pic] A motherboard is the central printed circuit board (PCB) in computers that holds many of the crucial components of the system‚while providing connectors for other peripherals. The motherboard is sometimes alternatively known as the mainboard‚ system board‚ or‚ on Apple computers‚ the logic board. History of Motherboards [pic] Before generation of Microprocessors i.e. in 1st‚ 2nd and 3rd generation computers‚ the computer was usually
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