Advantages disadvantages keyboard Essay Example

Advantages disadvantages keyboard Paper Hardware is any physical part of the computer which can be touched or seen. These are the main types of hardware:   Monitor   Mouse   Keyboard Disk Drives   Printer   Speakers   Tower Monitor Disk Drive Speakers Printer Tower Mouse Keyboard Types of hardware There are four types of hardware. Input Input is that type of hardware which is used to enter data into the computer. Process Process is that hardware which manipulates the inputted into useful form. Storage Storage is where the data is stored. Output Output devices allow you to view information produced after data has been processed. These are the following hardwares I used; Input Keyboard, mouse and scanner Process Central Processing Unit Storage RAM, USB flash drive and hard disk Output Printer and monitor In the following table I will describe the hardware I have used in my system, the way they work and the advantages and disadvantages. Name of device Price The way it works Advantages Disadvantages Keyboard i 20 When a letter, number or a symbol is pressed on the keyboard then a signal is immediately sent to the CPU. Then the CPU passes on the information to the monitor which outputs it. Keyboards come in many types. For example. QWERTY, concept, ergonomic etc. We will write a custom essay sample on Advantages disadvantages keyboard specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Advantages disadvantages keyboard specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Advantages disadvantages keyboard specifically for you FOR ONLY $16.38 $13.9/page Hire Writer This means that you can choose the one that suits you. Using to much keyboard can lead to RSI. A keyboard can do the same job of a mouse, like scrolling through pages by just the touch of one button. People who are unfamiliar with keyboards will get a lot of mistakes and will type very slowly because the buttons are mixed up. The buttons in a keyboard are arranged in such a way that you feel comfortable to use and become used to the layout. The buttons in a keyboard are very close to each other and very light, this means that there could be a lot of errors. Mouse i 13 There are two main types of a mouse.   Optical Mouse. Balled Mouse. The way you move the mouse, in the same direction the arrow will move. A mouse can be used to play computer games. The ball in a balled mouse can get lost. A Mouse with a keyboard to enter data into data computer. Using the mouse to much can lead to RSI. A mouse is very easy to control. A mouse will only work well on flat surfaces. Scanner i 60 A beam of light is shone on the object which is going to be scanned. The light is then reflected to a sensor which detects the colour of the light. A digital image is the created inside the computer. You can get 3 in1. It includes scanner, printer and photocopier. A scanner can be very expensive. An image which is scanned can be edited and then be used in numerous forms. An image which is scanned can take up a lot of computer memory. Using a scanner saves time because data is inputted within matter of seconds. The scanner can be damaged because it is made of glass. 1GB USB flash drive i 5 It can store large amounts of information and you can transfer files from one computer to another. They are portable and come in many designs and makes. Because they are very small they can fall out from your pocket and get lost. They can take in any format. USB devices transfer viruses from one computer to another. They come in different sizes. From 32 MB to 64 GB. They are valuable, so there are chances of getting stolen. Monitor i 100 Monitors come in two types. TFT   CRT Thousands of tiny dots called pixels are displayed which then create an image. TFT monitors are slim, so they take up lees space. TFT monitors can get scratched or damaged easily. TFT monitors create less heat than CRT. CRT monitors create too much heat and the room gets stuffy. CRT monitors are massive, so there are less chances of getting damaged. Some monitors do not have good graphics, so the image quality will not be as good. CPU. (Intel Pentium Dual Core) i 80 The CPU is the brain of the computer. It processes data. In the CPU all the sorting and calculations take place. It is small, so it will take less space. If it is damaged then the computer will not work. There is no need of buying it separate because it already comes with the computer. If there is no fan next to it then it will blow up. It is very fast because it can carry out millions of instructions per second. It is very expensive to buy. Laser printer i 250 They work using powdered ink which is fused onto paper by heat and pressure. They do not use cartridges but use toners. Hundreds of pages could be printed in an hour. They are very expensive to buy. The print outs are of very good quality. Toners are used instead of cartridges, this means that there will be extra costs It is very quiet and does not make any noise. They are massive and bulky; this means that if it breaks down then repairs will be very expensive. RAM (3 GB) i 45 To load programs it uses memory. RAM lets you open many programs at once. The more RAM you have the faster your computer will be. If you have less ram then your computer will crash a lot. You can even get to 4 GB RAM. It is quite expensive to buy in shops. It responds fast to signals. If the data is not saved and computer is switched ff, then the data will be lost. Hard disk (250 GB) i 85 The hard disk is the main storage device of the computer. All the data files and applications are stored in it. You do not loose any data when the computer is switched off. The hard disk can stop the computer from working if it crashes. They can store very large amounts of data. They can go up to 1 TB or sometimes even more. If the hard disk crashes on a regular basis the data from the hard disk could be lost. They come with every computer. This means you do not have to buy one when you buy a computer. The hard disk comes fixed inside the computer and can be difficult to transfer data to another computer. Alternatives In the following table I will give an alternative device to the hardware listed in the above table. I will also describe the way it works, its advantages and disadvantages and what difference it will make if used. Name of device Alternative The way it works Advantages Disadvantage Difference it would make if used QWERTY Keyboard Concept Keyboard It has a sheet spread on a grid which has pictures and symbols. The user can identify what each button will do. People who are unfamiliar with QWERTY keyboards can use this one. It has a limited amount of options to be programmed. The difference it would make if used a concept keyboard is that I will not have to move my hands and fingers too much. It could be used to teach little children. They make a lot of sounds and noises. It is very useful when ordinary keyboards might be damaged by spillages etc. They are not good for numeric input, though some come with a numeric pad. Balled mouse Optical mouse There is a laser at the bottom of the mouse which detects the movement. The way the mouse is move the same way the arrow on the screen will move.

Civil Rights Movement Essay

Civil Rights Movement Essay Civil Rights Movement Essay Adina Doctor English III Ms. Rodgers April 11, 2014 Reflection Journal #2 1 Please review your Letter of Intent prior to completing this task. Then, evaluate your progress during this work period toward achieving your learning goals and completing the tasks listed in your approved Proposal & Plan. How do you rate your own progress? Why? I rate my own progress a 9 because; I worked really hard and fixed most of my mistakes. I went to learning center and asked for additional help and care. I started eliminating extra activities that caused me to lose focus on my occupation. 2 A powerful personal attribute is resiliency. Please explain an unforeseen obstacle that arose in your Semester Project, or perhaps a mistake that you made. How did you persevere through this obstacle or learn from this mistake? How have your actions demonstrated the personal attribute of resiliency? The mistakes that I’ve made were based on procrastination and things worded wrongly. I wasted too much time on hanging with friends instead of actually at home typing and editing. Misspelled words and unhealthy sentences caused me the most trouble. I learned that if you make a mistake and you want to at least try to fix it; you need to CTRL+ALT+DEL. You need to find some type of control over this mistake, find an alternative to make sure your mind is set, and delete everything that’s causing your mistakes to increase. Making mistakes are common it’s up to you to get up and grow from it. 3 A valuable life skill is maintaining balance. Now that you are close to completing your project (or already done), how did your plan for maintaining balance work? What worked well? What did not? What would you change if you were to do it again? Maintaining balance is very important. My weeks are going to be based on work, homework, research, and editing and my weekends are going to be based on freedom, but if I have to do school work on the weekends then that’s going to be it. Balancing time is important also. I need to start working ahead instead of jamming everything in at the last minute. 4 What have you learned in your Semester Project that relates to the curriculum that you have learned in your past years of education? I believe getting into health and body classes will help me with my career choice such as the study of

BHS 220 Case 5 Essay Example | Topics and Well Written Essays - 500 words

BHS 220 Case 5 - Essay Example It is denoted H1. Citing the previous example an alternative hypothesis can be represented as follows. Statement of the research question – the moment a researcher identifies a research problem. He/she comes up with an exhaustive research question that will enable him/her to carry out a rigorous process. This enables him to also identify parameters as well as variables to be used in the sample data collection. Formulation of the null and alternative hypothesis – at this level the researcher states the null and alternative hypothesis. For example, if we wish to test if the graduating age of a graduate is 24, then Compute the rejection region – here the p-value which is the probability of the test statistic is calculated for both tails. This value is compared with the value from the tables at the level of significance selected in step 2 above. If the probability is less than or equal to the significance level, then the null hypothesis is rejected and the opposite is true. Stating conclusions – the first statement should describe the results of the null hypothesis and those of the alternative hypothesis, stating whether we rejected the null hypothesis or not. The second statement should refer to the research question deducing respective inferences based on the outcome of the null hypothesis. In this case the first step will be specifying the null and the alternative hypothesis. Then choose the level of significance to be used and compute the test statistic. Compute the probability of the test statistic which is the p-value on both tails. This will give you a basis for rejecting or not rejecting the null hypothesis (rejection region). Lastly, deduce vivid and realistic conclusions from the outcome of the null

Some thoughts of the article Essay Example | Topics and Well Written Essays - 250 words

Some thoughts of the article - Essay Example Therefore, to address these problems, government should to utilize tools for monetary and fiscal policy. Monetary policies tool entails utilization of discount rates and reserve requirements to control inflation and stabilize the economy. On the contrary, fiscal policies tool entails application of taxes as well as control of government expenditure to achieve certain economic goals (Taylor & Weerapana, 2008). On the contrary, Micro economics refers to a branch of economics that involves the study of decisions made by individuals and firms regarding the scarce resource. Whereby, in micro economics, consumers aims to maximize their utility despite having scarce resource aims to maximize their profits while at the same time minimizing their cost. However, due to limited resources, both firms and individuals experience opportunity cost. Whereby, they have to decide the best alternatives to forgo given the fact that resources are limited (Mankiw, 2011). Normally, in micro economics, the prices of goods and services are determined by market forces of supply and demand as well as government regulations. Therefore, both individuals and firms should take into consideration the issues of tax and government regulations when making their decisions (Chandra,

China, an Engine of Growth, Faces a Global Slump Essay Example for Free

China, an Engine of Growth, Faces a Global Slump Essay Yardley, J. , Bradsher, K. (2008). China, an Engine of Growth, Faces a Global Slump. New York Times, October 23, p. A6. In the article Yardley and Bradsher discuss China’s’ economic and financial slump caused by the global financial crisis. For three decades China has been one of the most powerful and promising countries in the world. The country has managed to booster its economic development due to flood of low-priced exports. However, global crisis negatively affects the country that faces the possibility of global recession. The question is whether the ruling Communist Party is able to prevent global financial crisis and to support China’s economic miracle. Economists and analysts say that China’s economic development plays crucial role for economies of the United States and European countries as they face serious downturns. Nonetheless, Chinese economic model is to be recalibrated, domestic investments are be stricken with government spending, and policies aimed at increasing consumer demand are to be promoted. China is in need of better health care network, improvements in social safety network, and lower fees for education establishments. Chinese government claims that global crisis insulates country’s financial system and, thus, leaders argue country’s banks would remain domestically concentrated. The overall economic growth has decreased, unemployment rates have increased and many factories have closed export region. China is recommended to use its foreign reserves for purchasing stocks in European as it gives China an excellent opportunity to gain more experience in global business. Some researcher say that America’s decline is inevitable and if China is prepared to manage it, it will be ready to stand as a superpower. In its turns, China isn’t willing to be considered as a replacement of the USA as it is still a developing country with more foreign reserves and more problems than other countries.

Melancholy :: Creative Writing Essays

Melancholy The autumn sun beat down still and hot as Trey peered over the whitewashed fence. Widow Harris' garden was just on the other side. It was a very sad looking garden. There were weeds everywhere. He scanned past the zucchini squash, the only thing doing well in the whole garden, and over the cantaloupe vine. Yes! The watermelon was still there! Trey could see it through the scraggly leaves of its vine. If he was fast, he could grab it and be gone before Mrs. Harris even knew he was there. Plagued with misgivings, but determined to go on, Trey climbed over the fence into the garden. His friends whispered that the old lady was really a witch and would turn you into a cricket and feed you to her cat if she caught you sneaking around. He pushed the thought from his mind. Trey pulled at the watermelon, but the vine clung too tight. He shifted his grip and pulled harder. Suddenly, the entire vine pulled out of the ground and Trey fell back, landing on his seat. While he was struggling with the tenacious fruit, the front door screeched open. "Hey! Out of my garden!" Mrs. Harris hobbled out onto her front porch. Trey scrambled frantically over the fence holding the melon by its vine. He dropped down to the sidewalk only to find his cousin, Miles, coming up the street. If Miles found out what he was doing, it'd ruin everything. Miles had an extremely over zealous conscience. Trey tried to run, but the watermelon was still on the other side of the fence. He yanked the vine and the melon flew over the fence. Just then, the melon snapped off its vine. Instead of sailing neatly into Trey's waiting arms it smashed against the sidewalk and burst open with a dull thump. He hurriedly gathered up as many of the slick red pieces as he could hold and ran clutching them tightly, soaking the front of his shirt. Miles couldn't believe Trey was stealing a watermelon! He pounded after his twin in age as fast as he could, but Trey, lank and swift on his feet, easily outdistanced him. Miles stopped, his hands on his knees and breathing hard. He was no match in speed to Trey. As his breathing slowed, he took a moment to think. Miles grinned. The logical place for his cousin to head was the old apple orchard, where they had a hideout. Melancholy :: Creative Writing Essays Melancholy The autumn sun beat down still and hot as Trey peered over the whitewashed fence. Widow Harris' garden was just on the other side. It was a very sad looking garden. There were weeds everywhere. He scanned past the zucchini squash, the only thing doing well in the whole garden, and over the cantaloupe vine. Yes! The watermelon was still there! Trey could see it through the scraggly leaves of its vine. If he was fast, he could grab it and be gone before Mrs. Harris even knew he was there. Plagued with misgivings, but determined to go on, Trey climbed over the fence into the garden. His friends whispered that the old lady was really a witch and would turn you into a cricket and feed you to her cat if she caught you sneaking around. He pushed the thought from his mind. Trey pulled at the watermelon, but the vine clung too tight. He shifted his grip and pulled harder. Suddenly, the entire vine pulled out of the ground and Trey fell back, landing on his seat. While he was struggling with the tenacious fruit, the front door screeched open. "Hey! Out of my garden!" Mrs. Harris hobbled out onto her front porch. Trey scrambled frantically over the fence holding the melon by its vine. He dropped down to the sidewalk only to find his cousin, Miles, coming up the street. If Miles found out what he was doing, it'd ruin everything. Miles had an extremely over zealous conscience. Trey tried to run, but the watermelon was still on the other side of the fence. He yanked the vine and the melon flew over the fence. Just then, the melon snapped off its vine. Instead of sailing neatly into Trey's waiting arms it smashed against the sidewalk and burst open with a dull thump. He hurriedly gathered up as many of the slick red pieces as he could hold and ran clutching them tightly, soaking the front of his shirt. Miles couldn't believe Trey was stealing a watermelon! He pounded after his twin in age as fast as he could, but Trey, lank and swift on his feet, easily outdistanced him. Miles stopped, his hands on his knees and breathing hard. He was no match in speed to Trey. As his breathing slowed, he took a moment to think. Miles grinned. The logical place for his cousin to head was the old apple orchard, where they had a hideout.

Quality Health Care Essay

Quality health care is defined as â€Å"the degree to which health services for individuals and populations increase the likelihood of desired health outcomes and are consistent with current professional knowledge†. The Institute of Medicine’s 2001 article, To Err Is Human released the statement that medical errors were responsible for between 44,000 and 98,000 deaths annually in the United States (McEwen and Willis, 2014). An immediate demand for accountability and quality in the health care system requested and many quality improvement/management initiatives were undertaken that directly impacted the discipline of nursing. A recent announcement was made that The Agency for Healthcare Research and Quality estimated 1.3 million fewer patients (a 17% reduction) were harmed in U.S. hospitals from 2010 to 2013. The estimate of 34,530 deaths prevented in 2013 was nearly 10 times greater than the reduction estimated in 2011. The cumulative cost savings during the period analyzed was nearly $12 billion. Healthcare quality and safety experts call the reductions impressive, but they also emphasize that there is still a long way to go to improve the safety of the nation’s hospitals (Rice, 2014). The majority of these medical errors result from faulty systems and processes, not individuals. Because errors are caused by system or process failures it is important to adopt various process-improvement techniques to identify inefficiencies, ineffective care, and preventable errors to then influence changes associated with systems. Each of these techniques involves assessing performance and using findings to inform change (McNally, Page, and Sunderland, 1997). Our textbook and this class provide us with the insight on specific theories, models, and framework applicable to nursing administration and management. Quality management (QM) is responsible greatly for the work done on the reduction of medical errors. We will discuss components to leadership in a QM environment and essential roles and responsibilities of these leaders. We will also learn that quality improvement and evidence-based practice are cornerstones of a successful and high performing health care organization. McEwen, M., & Wills, E. M. (2014). Theoretical basis for nursing (4th ed.). Philadelphia: Lippincott. ISBN: 978-1-4511-9031-1 McNally M., Page M., and Sunderland V. (1997). Failure mode and effects analysis in improving a drug distribution system. American Journal of Health System Pharmacy. (54) 17-7.  Rice, S., (2014). 1.3 million adverse events prevented in U.S. hospitals since 2010, feds say. Retrieved December 4, 2014 from: http://www.modernhealthcare.com/article/20141202/NEWS/312029936.