A modern electronic computer is a machine that is meant for ?->(Show Answer!)

1. A modern electronic computer is a machine that is meant for

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By: anil on 05 May 2019 01.41 am

A modern electronic computer is a machine that is used for input, output operations and storage. => Ans - (B)

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MCQ-> Read the following passage to answer the given question based on it. Some words/phrases are printed in bold to help you locate them while answering some of the questions.Organized retail has “fuelled” new growth categories like liquid hand wash, breakfast cereals and pet foods in the consumer goods industry accounting for almost 50% of their sales said data from market search firm Nielsen The figures showed some of these new categories got more than 40% of their business from modern retail outlets.The data also suggests how products in these categories reach the neighbourhood kirana stores after they have established themselves in modern trade While grocers continue to be an important channel for the new and evolving categories we saw an increased presence of the high end products in modern trade For example premium products in laundry detergents dishwashing car air fresheners and surface care increased in availability through this format as these products are aimed at “affluent” consumers who are more likely to shop in supermarket/hypermarket outlets and who are willing to pay more for specialized products Some other categories that have grown exceptionally and now account for bulk of the sales from modern retail are frozen and With the evolution of modern trade our growth in this channel has been healthy as it is for several other categories Modern retail is an important part of our business said managing director Kellogg India. What modern retail offers to companies experimenting with new categories is the chance to educate customers which was not the case with a general trade store Category creation and market development starts with modern trade but as more consumer start consuming this category they “penetrate into other channels” said president food FMCG category Future Group the country’s largest retailer which operates stores like Big Bazaar But a point to note here is that modern retailers themselves push their own private brands in these very categories and can emerge as a big threat for the consumers goods and foods companies For instance Big Bazaar’s private label Clean Mate is hugely popular and sells more than a brand like Harpic in its own stores So there is a certain amount of conflict and competition that will play out over the next few years which the FMCG companies will have to watch out for said KPMG’s executive director (retail) In the past there have been instances of retailers boycotting products from big FMCG players on the issue of margins but as modern retail become increasingly significant for “pushing” new categories experts say we could see more partnerships being forged between retailers and FMCG companies Market development for new categories takes time so brand wars for leadership and consumer franchise will be fought on the modern retail platform A new brand can overnight compete with “established” companies by trying up with few retailers in these categories president of Future Group addedWhich of the following is being referred to as new growth category ?
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MCQ-> Based on the information answer the questions which follow.A consultant to Department of Commerce. Government of Bianca has suggested 30 products which have high export potential. Dora an entrepreneur and prospective exporter notices that these products can be grouped in three ways- Machine made goods, Handmade goods and Intermediate goods. Among these 30 products some products are both machine made and intermediate goods but not handmade goods. Few products have a combination of handmade and machine made goods but not intermediate goods. Some products are handmade and intermediate goods but not machine made goods. Further it is seen that handmade-machine made goods are I less than machine made-intermediate goods. Similarly the total number of handmade-intermediate goods is I less than machine made-intermediate goods. There are just 4 products common across all product groups i.e. machine made-handmade- intermediate goods. Apart from this the number of only handmade goods is same as only machine made goods but less than only intermediate goods. Each product group/combination has at least one product. Dora prefers to export machine made goods and avoid hand made goods. She finds out that only handmade goods are twice the machine made-intermediate goods and the number of only intermediate goods is an even number. Whereas her close friend Sara prefers to export intermediate goods followed by only handmade goods.Sara and Dora prefer to export as many common products as possible in order to understand the regulatory conditions. Keeping their preferences intact, what is the maximum number of common products which can be exported by both of them?
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MCQ-> In a modern computer, electronic and magnetic storage technologies play complementary roles. Electronic memory chips are fast but volatile (their contents are lost when the computer is unplugged). Magnetic tapes and hard disks are slower, but have the advantage that they are non-volatile, so that they can be used to store software and documents even when the power is off.In laboratories around the world, however, researchers are hoping to achieve the best of both worlds. They are trying to build magnetic memory chips that could be used in place of today’s electronics. These magnetic memories would be nonvolatile; but they would also he faster, would consume less power, and would be able to stand up to hazardous environments more easily. Such chips would have obvious applications in storage cards for digital cameras and music- players; they would enable handheld and laptop computers to boot up more quickly and to operate for longer; they would allow desktop computers to run faster; they would doubtless have military and space-faring advantages too. But although the theory behind them looks solid, there are tricky practical problems and need to be overcome.Two different approaches, based on different magnetic phenomena, are being pursued. The first, being investigated by Gary Prinz and his colleagues at the Naval Research Laboratory (NRL) in Washington, D.c), exploits the fact that the electrical resistance of some materials changes in the presence of magnetic field— a phenomenon known as magneto- resistance. For some multi-layered materials this effect is particularly powerful and is, accordingly, called “giant” magneto-resistance (GMR). Since 1997, the exploitation of GMR has made cheap multi-gigabyte hard disks commonplace. The magnetic orientations of the magnetised spots on the surface of a spinning disk are detected by measuring the changes they induce in the resistance of a tiny sensor. This technique is so sensitive that it means the spots can be made smaller and packed closer together than was previously possible, thus increasing the capacity and reducing the size and cost of a disk drive. Dr. Prinz and his colleagues are now exploiting the same phenomenon on the surface of memory chips, rather spinning disks. In a conventional memory chip, each binary digit (bit) of data is represented using a capacitor-reservoir of electrical charge that is either empty or fill -to represent a zero or a one. In the NRL’s magnetic design, by contrast, each bit is stored in a magnetic element in the form of a vertical pillar of magnetisable material. A matrix of wires passing above and below the elements allows each to be magnetised, either clockwise or anti-clockwise, to represent zero or one. Another set of wires allows current to pass through any particular element. By measuring an element’s resistance you can determine its magnetic orientation, and hence whether it is storing a zero or a one. Since the elements retain their magnetic orientation even when the power is off, the result is non-volatile memory. Unlike the elements of an electronic memory, a magnetic memory’s elements are not easily disrupted by radiation. And compared with electronic memories, whose capacitors need constant topping up, magnetic memories are simpler and consume less power. The NRL researchers plan to commercialise their device through a company called Non-V olatile Electronics, which recently began work on the necessary processing and fabrication techniques. But it will be some years before the first chips roll off the production line.Most attention in the field in focused on an alternative approach based on magnetic tunnel-junctions (MTJs), which are being investigated by researchers at chipmakers such as IBM, Motorola, Siemens and Hewlett-Packard. IBM’s research team, led by Stuart Parkin, has already created a 500-element working prototype that operates at 20 times the speed of conventional memory chips and consumes 1% of the power. Each element consists of a sandwich of two layers of magnetisable material separated by a barrier of aluminium oxide just four or five atoms thick. The polarisation of lower magnetisable layer is fixed in one direction, but that of the upper layer can be set (again, by passing a current through a matrix of control wires) either to the left or to the right, to store a zero or a one. The polarisations of the two layers are then either the same or opposite directions.Although the aluminum-oxide barrier is an electrical insulator, it is so thin that electrons are able to jump across it via a quantum-mechanical effect called tunnelling. It turns out that such tunnelling is easier when the two magnetic layers are polarised in the same direction than when they are polarised in opposite directions. So, by measuring the current that flows through the sandwich, it is possible to determine the alignment of the topmost layer, and hence whether it is storing a zero or a one.To build a full-scale memory chip based on MTJs is, however, no easy matter. According to Paulo Freitas, an expert on chip manufacturing at the Technical University of Lisbon, magnetic memory elements will have to become far smaller and more reliable than current prototypes if they are to compete with electronic memory. At the same time, they will have to be sensitive enough to respond when the appropriate wires in the control matrix are switched on, but not so sensitive that they respond when a neighbouring elements is changed. Despite these difficulties, the general consensus is that MTJs are the more promising ideas. Dr. Parkin says his group evaluated the GMR approach and decided not to pursue it, despite the fact that IBM pioneered GMR in hard disks. Dr. Prinz, however, contends that his plan will eventually offer higher storage densities and lower production costs.Not content with shaking up the multi-billion-dollar market for computer memory, some researchers have even more ambitious plans for magnetic computing. In a paper published last month in Science, Russell Cowburn and Mark Well and of Cambridge University outlined research that could form the basis of a magnetic microprocessor — a chip capable of manipulating (rather than merely storing) information magnetically. In place of conducting wires, a magnetic processor would have rows of magnetic dots, each of which could be polarised in one of two directions. Individual bits of information would travel down the rows as magnetic pulses, changing the orientation of the dots as they went. Dr. Cowbum and Dr. Welland have demonstrated how a logic gate (the basic element of a microprocessor) could work in such a scheme. In their experiment, they fed a signal in at one end of the chain of dots and used a second signal to control whether it propagated along the chain.It is, admittedly, a long way from a single logic gate to a full microprocessor, but this was true also when the transistor was first invented. Dr. Cowburn, who is now searching for backers to help commercialise the technology, says he believes it will be at least ten years before the first magnetic microprocessor is constructed. But other researchers in the field agree that such a chip, is the next logical step. Dr. Prinz says that once magnetic memory is sorted out “the target is to go after the logic circuits.” Whether all-magnetic computers will ever be able to compete with other contenders that are jostling to knock electronics off its perch — such as optical, biological and quantum computing — remains to be seen. Dr. Cowburn suggests that the future lies with hybrid machines that use different technologies. But computing with magnetism evidently has an attraction all its own.In developing magnetic memory chips to replace the electronic ones, two alternative research paths are being pursued. These are approaches based on:
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MCQ-> Read the following passage carefully and answer the questions given below it. Before my many years’ service in a restaurant, I attended a top science university. The year was 2003 and I was finishing the project that would win me my professorship. My fortysecond birthday had made a lonely visit the week before, and I was once again by myself in the flat. Like countless other mornings, I ordered a bagel from the toaster. ‘Yes, sir!’ it replied with robotic relish, and I began the day’s work on the project. It was a magnificent machine, the thing I was makingcapable of transferring the minds of any two beings into each other’s bodies. As the toaster began serving my bagel on to a plate, I realised the project was in fact ready for testing. I retrieved the duck and the catwhich I had bought for this purpose from their containers, and set about calibrating the machine in their direction. Once ready, I leant against the table, holding the bagel I was too excited to eat, and initiated the transfer sequence. As expected, the machine whirred and hummed into action, my nerves tingling at its synthetic sounds. The machine hushed, extraction and injection nozzles poised, scrutinizing its targets. The cat, though, was suddenly gripped by terrible alarm. The brute leapt into the air, flinging itself onto the machine. I watched in horror as the nozzles swung towards me; and, with a terrible, psychedelic whirl of colours, felt my mind wrenched from its sockets. When I awoke, moments later, I noticed first that I was two feet shorter. Then, I realised the lack of my limbs, and finally it occurred to me that I was a toaster. I saw immediately the solution to the situation – the machine could easily reverse the transfer but was then struck by my utter inability to carry this out. After some consideration, using what I supposed must be the toaster’s onboard computer; I devised a strategy for rescue. I began to familiarise myself with my new body : the grill, the bread bin, the speaker and the spring mechanism. Through the device’s rudimentary eye with which it served its creations – I could see the internal telephone on the wall. Aiming carefully, I began propelling slices of bread at it. The toaster was fed by a large stock of the stuff, yet as more and more bounced lamely off the phone, I began to fear its exhaustion. Toasting the bread before launch proved a wiser tactic. A slice of crusty wheat knocked the receiver off its cradle, and the immovable voice of the reception clerk answered. Resisting the urge to exclaim my unlikely predicament, I called from the table : “I’m having a bit of trouble up here, Room 91. Could you lend a hand ?” “Certainly, sir, there’s a burst water pipe on the floor above, I suppose I’ll kill two birds with one stone and sort you out on the way.” The clerk arrived promptly, and after a detailed and horrifying explanation, finally agreed to press the button on the machine and bring me back to my original state.Why did the author believe that he would earn professorship ?
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MCQ-> Read the given passage carefully and select the best answer to each question out of the four given alternatives. Computers have become indispensable in the modern times. From information to having fun, you can possibly do everything with the help of this amazing machine. For the modern day child, computers are vital and the amount of time that they devote on them has constantly been on the rise. One of the most popular things with children when it comes to the computer are video games or the computer games. From puzzles to racing, action to sports, strategy to adventure, computer games are possibly the biggest addiction with most children. With companies such as Sony and Microsoft going all out to promote Xbox and Playstation to children worldwide, the allure to these games has only got better. These video games not only help in making child's brain sharper through mental stimulation but it also helps relieve them of anxiety or pain. In some cases, games have proved to aid in dyslexic kids reading better. Since adults also love playing games, it can be a time of bonding between adults and children, increasing the amount of time spent together especially when time spent by parents and children is very less nowadays. On the other hand, the addiction to these computer games can severely harm the child. Since children keep on playing for long hours, it can lead to eye damage. The impact of excessive visual medium is evident as a large number of children these days start wearing spectacles from an early age. Long hours of playing computer games can also result in headaches and dizziness.One of the most popular things with children when it comes to the computer?
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