HISTORY OF COMPUTERS Ancient era Suanpan (the number represented on this abacus is 6‚302‚715‚408) Devices have been used to aid computation for thousands of years‚ mostly using one-to-one correspondence with fingers. The earliest counting device was probably a form of tally stick. Later record keeping aids throughout the Fertile Crescent included calculi (clay spheres‚ cones‚ etc.) which represented counts of items‚ probably livestock or grains‚ sealed in hollow unbaked clay containers.[1][2]
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Compare the Efficiency of Banana Peel‚ Peel Briquettes and Coal in Order to Evaluate Environmentally Friendly Fuel Group 4 Members: - Dominique Fernandez - Jay Christian Toring - David Nathan Valerio - Chifrey Malto - Tyrone Asiño September 3 & 4‚ 2012 Miss Ermina Dimaunahan CHAPTER I THE PROBLEM AND IT`S BACKGROUND A. Background of the Study The Philippines is a tropical country that is abundant with nutritious and refreshing fruits that Filipinos are fond of eating. Banana is one
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specialty fuel additives is expected to reach USD 8‚517.6 million by 2020‚ according to a new study by Grand View Research‚ Inc. Dynamic regulatory trends‚ particularly in North America and Europe has prompted fuel marketers to use specialty fuel additives which is expected remain a key driving factor for the market over the forecast period. In addition‚ ban on MTBE in the U.S. is expected to further push the demand for fuel additives over the next six years. However‚ emergence of alternative fuel such
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The Chinese Abacus The abacus‚ a very important invention‚ was invented in Ancient China. We still use abacus but know it is known as a calculator. The abacus is a wooden frame with rows of wood along which beads are slid. One famous mathematician named Cheng Dawei in ancient China invented the Abacus. The abacus was invented around 2600BC by the Chinese. A typical abacus has 13 columns that are divided into two with each column having two beads on top and five at the bottom. The abacus was
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your calculator and the aluminum dynamics cart track. The Experiment: 1. Find the coefficient of static friction by slowly raising the incline plane until the block just begins to slide. Note the angle. Repeat 3 times and average to accurately find the angle of repose. 2. Determine a method in which the coefficient of kinetic friction can be determined. 3. Perform your experiment to determine the coefficient of kinetic friction for the rubber stoppers on your calculator cover
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fermenting starch‚ wheat and sugar cane. Ethanol is also made from the hydration of ethylene from petroleum‚ though the majority of ethanol is produced by fermentation. It is considered an alternative fuel source as it is regarded to be renewable and more beneficial to the environment. As a car fuel ethanol is blended with petrol in different concentrations. In cars‚ carbon monoxide is produced from the incomplete combustion of petroleum. By adding ethanol which has 35% oxygen the combustion is more
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1625ml | # | 20th May | 100ml | 200ml | 100ml | Refused | 400ml | 400ml | 1400ml | # | Total amount of fluid over 20 days = 21‚300mls Calculations for the total over 20 days * Mean 21300 = 1065mls 20 (This was checked with the use of a calculator) * Mode Using the chart above looking at the totals and using the below code you can see the mode is 1580. = appears more than once. *
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have stopped using our body and brain. Computers‚ calculators and internet are sources of great help but we have begun to depend totally on these inventions. For instance‚ even if we have to add a few numbers or do a small calculation we take out our calculator rather than use our brain. Our parents can still solve such problems in a jiffy without the aid of a calculator. We should try to solve our mathematical problems without using calculators this makes our mind sharp. Sitting on a chair for many
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because we had 7 numbers and we needed to find something in common about the 7 numbers. Since we are trying to find a commonality between 7 different numbers‚ we would have to start high‚ so I started at 100 and kept finding multiples of 2-7 on a calculator and recording it on paper‚ till I eventually hit 300. I noticed that 300 had 2-6 go into it evenly‚ and 7 went into 301 evenly. This means 2-6 go into 301 evenly with 1 left over‚ and
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Materials: Electronic calculator Tracing paper (optional) Geometrical instruments READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams or graphs. Do not use staples‚ paper clips‚ glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. If working is needed for any question it must be shown below that question. Electronic calculators should be used.
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