Basic Computer Memory Types Essay Example for Free

Basic Computer Memory Types Essay Random Access Memory (RAM) RAM is a location within the computer system which is responsible for stacking away data on a temporary basis, so that it can be promptly accessed by the processor. The information stored in RAM is typically loaded from the computers hard disk, and includes data related to the operating system and certain applications. When the system is switched off, RAM loses all the stored information. The data remains stored and can be retained only when the system is running. When the RAM gets full, the computer system is more likely to operate at a slow peed. The data can be retrieved in any random order. Generally, there are two types of RAM; namely Static RAM (SRAM) and Dynamic RAM (DRAM). When many programs are running on the computer simultaneously, the virtual memory allows the computer to search in RAM for memory portions which havent been utilized lately and copy them onto the hard drive. This action frees up RAM space and enables the system to load different programs. Read Only Memory (ROM) This type of memory is active, regardless of whether the system is turned on or is switched off. It is a kind of permanent non-volatile storage memory. As the name read only suggests, the contents in it cannot be changed or modified. It is an integrated circuit which is pre-programmed with important data that should necessarily be present for the computer to carry out its normal functionalities. Cache Cache is a kind of RAM which a computer system can access more responsively than it can in regular RAM. The central processing unit looks up in the cache memory before searching in the central memory storage area to determine the information it requires. This rules out the need for the system to search for information in larger and bigger memory storage areas, which in turn leads to a faster extraction of data. Computer Hard Drive These devices are important data storage components that are installed in the CPL]. Their memory ranges widely, and a user may choose the memory depending on the data needed to be stored and accessed. Nowadays, hard drives having a memory capacity of 120 gigabytes to 500 gigabytes are normally used. Flash Memory This is a non-volatile kind of memory which is intended to contribute to portable torage and a convenient transfer of data from one computer to another. The data in it can be erased and re-programmed as per the users requirements. It only has a specific number of erase and write cycles that it can withstand, after which it creates a tendency to lose out on the stored information. Memory cards and USB flash drives These are Just the common and main computer memory types which facilitate memory and data storage. However, there are many subtypes which are sorted out according to the memory-related functionalities they perform and the requirements they serve.

ft.lauderdale high AP bio project :: essays research papers

2) LEVEL 1 - Cells Are the basic unit of structure and function in living things.May serve a specific function within the organism Examples- blood cells, nerve cells, bone cells, etc. tissue LEVEL 2 - Tissues Made up of cells that are similar in structure and function and which work together to perform a specific activity Examples - blood, nervous, bone, etc. Humans have 4 basic tissues: connective, epithelial, muscle, and nerve. LEVEL 3 - Organs Made up of tissues that work together to perform a specific activity Examples - heart, brain, skin, etc. LEVEL4 - Organ Systems Groups of two or more tissues that work together to perform a specific function for the organism. Examples - circulatory system, nervous system, skeletal system, etc. LEVEL 5 - Organisms Entire living things that can carry out all basic life processes. Meaning they can take in materials, release energy from food, release wastes, grow, respond to the environment, and reproduce. Usually made up of organ systems, but an organism may be made up of only one cell such as bacteria or protist. Examples - bacteria, amoeba, mushroom, sunflower, human 4) 1)Atom: The smallest unit of matter that retains the properties of an element. 2) Ion: An atom that has gained or lost electrons thus acquiring a charge. 3) Electronegativity: The attraction of an atom for the electrons of a covalent bond. 4) Hydrogen Bond: A type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom a polar covalent bond in another molecule. 5) Hydrophilic: Having an affinity for water. 6) Cohesion: The binding together of like molecules, often by hydrogen bonds. 7) Capillary action: Physical effect caused by the interactions of a liquid with the walls of a thin tube. The capillary effect is a function of the ability of the liquid to wet a particular material. 8) Organic Compound: Ccontains carbon chemically bound to hydrogen. Organic compounds often contain other elements (particularly O, N, halogens, or S). 9) Polar Covalent Compound: A type of covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive. 10) Molecule: Two or more atoms held together by covalent bonds. 11) Isotope: One of several atomic forms of an element, each containing a different number of neutrons and thus differing in atomic mass. 12) Ionic bonding: A chemical bond resulting from the attraction between oppositely charged ions. 13) Nonpolar covalent bond: A type of covalent bond in which electrons are shared equally between two atoms of similar electronegativitiy.

Pest Analysis of Russian Retail Market

PEST Analysis The PEST analysis is used in this report to evaluate the political, economic, social and technological aspects of the macroeconomic environment in the targeted market, Russia. This study helps to frame the basis for the decision-making about a possible market entry. Thus, it is of vital importance to scrutinize the macroeconomic environment as part of the market research. Political and Legal Aspects According to the Russian 1993 Constitution, Russia is a democratic federative state with a republican form of government grounded in the rule of law (pwc, 2012).After the fall of the Soviet Union in 1991, Russia has gradually opened up and after a seven-year transitional period with numerous market reforms, political stability was achieved under Prime Minister Putin and President Medvedev. Moreover, since 1999 when Putin became president for the first time, Russia’s political system has shown continuity in its policies. The Russian judicial system is based on statutor y law, but has been ineffective and weak since the fall of the Soviet Union. However, the introduction of many reforms is expected to eventually bring about improvements.Russia has also entered various legal assistance programs with countries across the world, as unfair competition practices are hindering FDI inflows into the country (Datamonitor, 2011; pwc, 2012). However, corruption and crime are still major challenges for doing business in Russia. Russia has been ranked 143rd in Transparency International’s corruption perception index of 2011 concerning perceived public sector corruption. In addition, the high degree of bureaucracy within the country makes doing business slow and complicated.The business environment is further negatively affected by the high number of corrupt state officials (Datamonitor, 2011). Terrorist activity is one of the major concerns in Russia as bomb explosions and suicide attacks (such as those in the Moscow-St. Petersburg express train in 2009 or in the Moscow metro in 2010) have killed dozens of people over the last years (Datamonitor, 2011). Russia is member in many different international, regional, economic and financial agreements such as G8, G20, and International Monetary Fund just to name a few of them. pwc, 2012) The country further integrated within the world economy by entering the World Trade Organization (WTO) in 2012 (Datamonitor, 2011). Economic Aspects Russia of 2011 is characterized by a per capita GDP (PPP) of $16. 750, GDP and FDI growth of 4. 3% and 33% respectively. Furthermore, the ease of doing business in the country improved by 4 ranks between 2011 and 2012 and hence Russia is ranked 112th in 2012 (Datamonitor, 2011; pwc, 2012). Historically successful economic reforms during the 1990s led to liberalization of the Russian economy and to high growth rates.Yet, the global economic downturn beginning in 2008 led to a negative growth of 7. 7% in 2009. However, the country’s economy managed to q uickly recover, achieving a 3. 9% GDP growth in 2010, mainly due to the high oil prices (Datamonitor, 2011). Improved competitiveness and higher oil prices facilitated a turnaround in the current account, from a deficit in 1998 to a surplus of 12% of GDP in 1999. Since 2000, Russia has maintained a current account surplus, which dropped from around $102bn in 2008 to around $47bn in 2009 (Datamonitor, 2011; pwc, 2012).Current challenges in Russia’s economic landscape include a high budget deficit and a banking system being under continuous stress. Moreover, the unemployment rate of 6. 6% is another negative side of Russia’s economic landscape (Datamonitor, 2011). Social Aspects The main ethnic group within Russia is Russians with 79. 8%, while other ethnic groups include Tatar 3. 8%, Ukrainian 2%, Bashkir 1. 2%, Chuvash 1. 1%, other or unspecified ones with 12. 1% (2002 census) (CIA The World Factbook, 2012).Concerning religion, estimates from 2006 suggest that 15-20% o f the population are Russian Orthodox, 10-15% are Muslim, and 2% – other Christian, yet large parts of the population are non-believers, a likely legacy from the Soviet era (CIA The World Factbook, 2012). The United Nations Development Program (UNDP) ranks Russia 66th with regards to overall human development, making Russia part of the high human development quartile. However, one major challenge within Russia is the huge gender gap concerning life expectancy.Average life expectancy is 66. 2 years, yet it is only 59. 8 years for men, while boosting 73. 1 for women (United Nations Development Program (UNDP), 2011; Datamonitor, 2011). Russia is estimated to be one of the fastest-growing countries concerning proportion of population to be considered middle class. (Financial Times – Chart of the week: tracking the rising EM middle classes, 2012). The related increase in disposable income can be illustrated by the tripling in middle class spending between 2000 and 2010.Howe ver, the widening income inequality may pose a challenge for long-term success (Datamonitor, 2011). In general, Russia’s current strengths concerning social development are the high level of social governmental spending and the well-educated population. However, the country still struggles with a high mortality rate and a widening income inequality gap (Datamonitor, 2011). Technological Aspects Russia has signed the TRIPS (Trade-related Aspects of Intellectual Property) agreement, but nevertheless faces Intellectual Property Rights issues regularly.Moreover, the country still lacks adequate telecommunications infrastructure (Datamonitor, 2011). PEST Implications for the Retail Industry Russia’s political and legal framework suggests that foreign retail operations in Russia, although not restricted, may be inefficient because of bureaucracy and corruption. In addition, the usage of the ruble exposes foreign investors to exchange rate risks. The economic characteristics of the Russian market, however, paint a much more attractive picture of the industry, which represents 15. % of the country’s GDP. The Russian retail and wholesale sector has attracted 17. 1% of the country’s FDI in 2011. The country also has the lowest retailer penetration rates in Europe (pwc, 2012), suggesting it is a market in its growth stage with significant opportunity for new entrants. Yet, a recent study conducted by the management consulting group, AT Kearney, shows that Russia has fallen behind BRIC and other emerging market nations in terms of the countries’ attractiveness for investments in the retail sector.In fact, it ranks 26th out of 30 emerging market nations with regard to the attractiveness of the retail sector. As some experts argue such a ranking may reflect the strong foothold of local retailers, with such rivalry making the Russian retailer market a developed rather than an emerging one (Financial Times – Russia retail: loosing app eal, 2012) The pending commercialization of the cloud-dispersal aircraft technology may also have a positive trickledown effect on the retail industry.The technology may solve the problem of drought-prone areas, representing 6% of arable land within Russia, possibly improving domestic food production, and supplier reliability (Datamonitor, 2011; CIA The World Factbook, 2012). Overall, the country environment suggests that despite some institutional voids, the economic environment is conductive to a booming retailer segment with a growth that can be exploited by foreign retailers. The decrease in FDI attractiveness, however, points to the likely presence of established competitors that may prevent such an entry, which will be analyzed in greater detailed in the industry analysis.

Commentary English Poetry Ib Sample - 779 Words

A Commentary on Behavior of Fish in an Egyptian Tea Garden by Keith Douglas. *The description of the men drawn to her starts with the rich cotton magnate immediately establishing the hierarchy the author seeks to show*. This hierarchy is further developed*in the actions of the different suitors. The rich magnate ‘through the frail reefs of furniture swims out’, the inverted syntax* in the line* suggesting grace and power. *T*he self-assured manner in which he acts suggests that the rich man is above the petty rivalries* that the others have. H*e knows his wealth gives him an insurmountable edge* (and this is further shown in the last stanza)*. *Also, the* author shows this from the* fact that *though this* fish is far from pretty with†¦show more content†¦The color ambiguity or duality of the color symbology mentioned above is progressively demystified as we move through these pars as the author clearly shows that the linkage is with lust and greed. The author then progresses to describe the others who seek the lady’s attention. The Captain who is supposed to be able to tell when danger approaches is also befuddled by the charms on show by the lady and so is the unattractive flat eyed flat fish who even though too ugly to be a real contender satisfies himself by looking at her from the distance. This list of men who fall into her trap is further expounded with the description of the gallants who ‘circle’ and try to make small talk (‘fish pause so to nibble or tug) but all to no avail. By now we start seeing the men and their antics as pathetic as it is pretty clear that the woman has already made up her mind. The poem ends on a very blunt note. When the ice cream is being had the men are vying for the woman based on their looks, character and the like while the rich magnate ‘stayed to watch’ During this time money became temporarily inconsequential but at the end of the day when the ice cream was f inished, it is paid for by the rich man and the other men seeing this acknowledge defeat and leave. The author has used a lot of caesura in this stanza to underline the point that after all the show it was the power ofShow MoreRelatedCranes: Poetry and William Cullen Bryant1924 Words   |  8 PagesFriend Skip to content EXTRA CREDIT FOR ALL CLASSES ESW IB Lang and Lit ↠ Paper 1 Sample TextsExaminers comments for Sample Paper 1 Essays → Paper 1 Sample Essays Posted on October 18, 2012 by tonyapaul Please read the Paper 1 Sample Texts before you read this post. Then try to write your own analysis and compare it to the following HL samples. Paper 1 HL Sample 1.1 (birds) In this comparative commentary, Cranes by Jennifer Ackerman and To a Waterfowl by William CullenRead MoreStephen P. Robbins Timothy A. Judge (2011) Organizational Behaviour 15th Edition New Jersey: Prentice Hall393164 Words   |  1573 Pagesyou say that it is now a good time or a bad time to find a quality job?† 100 90 80 70 60 50 40 30 20 10 0 2004 2005 2006 2007 2008 2009 39 38 41 57 59 54 48 47 26 20 8 2010 11 2011 Bad Good 69 86 89 86 Source: Gallup tracking polls of random samples of roughly 1,000 adults, aged 18 and older, living in the continental U.S., selected using random-digit telephone sampling. See F. Newport, â€Å"Americans’ Views of Job Market Improve; Still Mostly Negative† (April 18, 2011), www.gallup.com. between