chemistry is used in many ways in computers also.for example.‚we use many elements like silicon‚zinc‚aluminium‚copper etc.‚. in designing and in developing the hardware of computer. Electronics: Chemistry is important in many electronics fabrication and packaging methods and may one day help extend the trend toward faster and cheaper electronics by \molecular electronics‚" where individual molecules are used as electronic components. Chemists have always played a fundamental role in the
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Common Emitter Amplifier Bagos‚ Elyza Pangilinan‚ John Oliver Ateneo de Manila Loyola Heights‚ Quezon City Abstract – This experiment shows the practicality and behavior of a Common Emitter Amplifier circuit through the analysis of its varying input and output signals. I. INTRODUCTION The common emitter amplifier circuit makes use of a voltage divider circuit as seen in previous lessons on DC analysis. However‚ for the small signal analysis portion for this circuit‚ the objective is
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Beginning in the 1980s the history and concept of eugenics were widely discussed as knowledge about genetics advanced significantly. Endeavors such as the Human Genome Project made the effective modification of the human species seem possible again (as did Darwin’s initial theory of evolution in the 1860s‚ along with the rediscovery of Mendel’s laws in the early 20th century). The difference at the beginning of the 21st century was the guarded attitude towards eugenics‚ which had become a watchword
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Introduction Recently‚ workplace flexibility has been an important issue in management. Flexibility is about an employee and an employer making changes to when‚ where and how a person will work to better meet individual and business needs (Workplace Flexibility 2011). Flexible work arrangements are a broad concept that includes any work arrangements that digress from standard employment involving fixed daily hours on the employer’s premises (Gardiner and Tomlinson 2009). It involves flexible
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Professional values‚ ethics‚ and attitudes. (AC 423) Group Assignment QUESTION: With the advantage of hindsight‚ what advice would you have given the Enron Board to avoid the 2001 disaster? GROUP MEMBERS 1. Augustine Kupara R082559R 2. Tonderai Nyamadzawo R082987G 3. Simbarashe Chaka R089613J 4 Brighton Nzvuvu R089824H 5. Walter Danger R082990X 6. Simon Chigwanda R075968L 7. Ashley Murisa R082991Y 8. Frank Garatsa R082988H 9. Presely Nheweyembwa R076037L 10
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circuits. The vacuum tubes were glass cylinders‚ typically about four inches high and an inch in diameter‚ which generated a lot of heat and thus could not be placed too close together. Then‚ in 1947‚ a momentous event occurred at Bell Labs - William Shockley‚ John Bardeen‚ and Walter Brattain announced the invention of the transistor. Only about an inch long and a quarter inch across‚ a transistor produced very little heat‚ and did the same job as a vacuum tube. The downsizing of computers began in
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Figure. 1 illustrates the device architecture of the simulated tapered FinFET and cross-section of the device. The 5nm node technology was used in this simulation. This is equal to effective gate length approximately equal to 10 nm [10]. In this simulation‚ the physical gate length (LG) of 9 nm are adopted. SiO2 and Si3N4 are considered as the gate oxide and spacer material‚ respectively. Fixed spacer length (LSP) of 7 nm was used. The doping concentrations are the source (1020 cm-3)‚ the drain (1020
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Normally‚ p–n junctions are manufactured from a single crystal with different dopant concentrations diffused across it. In the case of solar cells‚ polycrystalline silicon is often used to reduce expense‚ despite the lower efficiency caused by the grain boundaries. These boundaries are not related to the p–n junctions in the cell. If they would be the same spacially‚ the disturbing effects would make the solar cell useless. [edit] Properties of a p–n junction The p–n junction possesses some
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“Timeline Of Computer” 600’s bc The abacus is developed in China. It was later adopted by the Japanese and the Russians. 600’s ad? Arabic numbers -- including the zero (represented by a dot) -- were invented in India. Arabic translations of Indian math texts brought these numbers to the attention of the Europeans. Arabic numbers entered Europe by means of Spain around 1000 ad and first became popular among Italian merchants around 1300. Until then‚ people used the Roman system in western
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Allow me to take a glance back at yesterday‚ and attempt a peak forward at tomorrow. We stand near the finish line of the Twentieth Century‚ and the events that shaped its tapestry are still fresh in our memory. It was‚ in the opinion of many‚ the bloodiest in the history of mankind. Yet the 20th was also the century that showed remarkable promise. It rose from the ashes of the Holocaust and two World Wars‚ overcome the dual threats of fascism and communism‚ and by embracing the free market precepts
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