Audio/Video Systems PRELIM EXAM – Reviewer December 2012 For ECT04A1 ( prepared by Sir Felixberto M. Gonzaga Jr.) * It blanks out retrace for each H line by making video signal go to the black blanking level at 15‚750 Hz. * horizontal blanking pulses * It includes the camera signal with the picture information‚ sync pulses and blanking pulses. * composite video signal * It times the scanning for each H line at 15‚750 Hz. * horizontal
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EXPERIMENT 4B: THE MENDELEEV LAB OF 1869 Materials: 30 element cards‚ periodic table Aim: How can we identify elements based on their propeties? Background: Russian chemist Dmitri Mendeleev is generally credited as being the first chemist to observe patterns emerge when the elements are arranged according to their properties. Mendeleev’s arrangement of the elements was unique because he left blank spaces for elements that he claimed were undiscovered as of 1869. Mendeleev was so confident
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What is the evidence for the existence of dark matter in galaxies and in the Universe? Since early 1930s physicists attempted to understand and solve the “missing mass problem” in the galaxy and universe. This missing mass problem has spurred on astronomers and particle physicists on a quest to gain greater understanding of the universe. One of the key postulations to solve this missing mass problem is dark matter. Scientist has continually conducted experiments attempting to provide evidence
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‚ rubber‚ glass‚ Teflon‚ mica‚ etc.). • Materials whose conductivity falls between those of conductors and insulators are called semiconductors. • Semiconductors are “part-time” conductors whose conductivity can be controlled. germanium Semiconductors silicon Semiconductor —II • Silicon is the most common material used to build semiconductor devices. • Si is the main ingredient of sand and it is estimated that a cubic mile of seawater contains 15‚000 tons of Si
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OPTICAL FIBER COMMUNICATION Zafar Yasin OUTLINE - Introduction about Optical Fibers. Main Characteristics of Fiber Optics Communication System. Light propagation in an Optical Fiber. Mode Analysis for Single Mode Fiber. Mode Analysis for Multimode Fibers. Surface Plasmon Resonance. Optical Fiber Surface Plasmon Resonance Sensors. Fibre Optic? Dielectric waveguide of cylindrical geometry with core and cladding of suitable material. refractive index of core > refractive index of
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1: Integrated Circuit Technology An integrated circuit which is also known as (microchip‚ chip‚ IC) placed transistors‚ capacitors‚ resistors‚ and wiring circuitry‚ which was separated previously‚ onto the semiconductor material of a single chip (Germanium or Silicon). The cost of making electronics was greatly reduced due to the integrated circuit‚ which impacted the designs of all future computers and other electronics. AMD and Intel‚ two major microprocessor companies‚ dominate computers of today
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What are mineral resources? Mineral resources are the natural resources which cannot be renewed. Examples of mineral resources Gold Salt Tin Limestone Iron ore Coal Iron Manganese Rubber Aluminium Marbles They are also used to produce useful things. Some of these useful things are: Soap Jewelleries e.g. chain bracelet e.t.c. Batteries And so on NAMES OF MINERAL RESOURCES‚ WHERE IT IS FOUND AND ITS USES. Limestone: Limestone is a sedimentary
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Billions (1996 –2000) DRAM Production Electronics design tools; Samsung develop in-house Wafers; Samsung owned technology to produce DRAM with the largest wafer (more production capacity) Materials; Semiconductor (Silicon and Germanium) are costly in production process and has a few suppliers System Firms; Samsung can customize to meet customer requirements Past Strategy and Challenge Past Strategy Kun HeeLee’s Strategy is learn from competitors‚ Samsung invests in DVD and
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Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr potassium calcium scandium titanium vanadium chromium manganese iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton 39.10 40.08 44.96 47.87 50.94 52.00 54.94 55.85 58.93 58.69 63.55 65.38(2) 69.72 72.63 74.92 78.96(3) 79.90 83.80 37 38 39 40 41
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8/14 Methods for Manufacturing Improvement IEOR 130 Prof. Robert C. Leachman University of California at Berkeley August‚ 2014 Semiconductor Manufacturing 8/14 IEOR 130 • Purpose of course: instill cross-disciplinary‚ industrial engineering perspective and skills in future engineers‚ managers or researchers for technologyintensive manufacturing • Course prerequisites: calculus‚ linear algebra‚ statistics and probability. Physics recommended. • Course assignments: ~ 9 homework
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