The PC Preventive Maintenance Information Technology Essay

The PC Preventive Maintenance Information Technology Essay Preventive maintenance is a routine maintenance actions aimed at the prevention of breakdowns and failures of computer (Weibull, 2007). The main aim of preventive maintenance is to prevent the failure of equipment before it actually occurs. These include tests, measurements, adjustments, and parts replacement, performed particularly to prevent faults from happening. Two types of PC preventive maintenance are planned maintenance and condition based maintenance. Planned maintenance is maintenance that is performed on a regular basis in order to prevent a machine from deteriorating or breaking down. Condition based maintenance is maintenance when need arises. This is when one or more indicators show that equipment performance is deteriorating. Regular maintenance such as cleaning up, backing-up data, removing obsolete programs, Microsoft updates, security updates and defragmentation are precautions one must take while doing preventive maintenance. We require preventive maintenance because it helps to prevent breakdowns, failures, secure data and information of computers. It increases the efficiency and speed of the equipment and it also saves you from spending too much money when the machine breaks down completely and requires a big time repair or a replacement. Preventive maintenance cost lesser than repairs and replacement. Software maintenance and software deployment are software preventive maintenance. Software deployment is all of the activities that make a software system available for use (Wikipedia, 2010). The method consists of several interrelated activities with possible transitions between them and this is done at the producer site or consumer site. Software maintenance is modifying a software product after delivery to remove errors and improve performance. Software upgrade is replacing a software program with a new improved version. Software upgrade can keep the computer more secure, up-to-date, and performing at its best. Computer viruses are small software programs that are designed to spread from one computer to another. Viruses can increase their chances of spreading to other computers by infecting files on a file system that is accessed by another computer. Malware, adware, and spyware programs are computer viruses that can harm the computer. Keeping the computer updated, use of patches, firewall and protected internet access are the safe techniques to keep the PC virus free. Backup is making copies of data on a medium other than your hard disk. Full backup, image backup, selective backup, differential backup and incremental backup are types of computer backup. Full Backup backs up all selected files. Image backup is a backup of an entire hard drive by means of creating its image. An incremental backup backs up only those files created or changed since the last backup. Differential backup contain all files that have changed from the time when the last full backup. Selective backup this when you select specific files and directories to back up. Back up is required in case a file is lost, hard failure or deleting wrong file. By the use of backup you can recover the lost files. Floppy disks, tapes and hard disks drives are types of backup media. Tape is a sequential recording system. Tape drives use magnetic tape to store data and to access data the tape drive must rewind and fast forward to different segments of a tape to retrieve data. Hard disk is a storage device that store programs and data. Hard disks stores data even when the power is off; they do need power to perform read and write functions during usage. Floppy disk is a soft magnetic disk used by computers to store data magnetically. Floppy disks are inexpensive, portable and most computers have the hardware to use them. They have now been outdated by USB flash drives, external hard disk drives, CDs and memory cards. Hardware maintenance is an understanding of how the PC hardware maintenance function should operate and be managed. Hardware plays an important role within a computer and this is why it is very essential for the users to be aware of the need to know some important aspects related to computer hardware maintenance. The users must take necessary actions to avoid the computer from being damaged or protecting the computer components running well as long as possible so that we might not spend too much money too often in order to acquire new computer components. In addition hardware maintenance is taking steps to keep the hardware working properly, for example; cleaning computer hardware, not drinking or eating when using a computer, implementing security hardware and keeping you computer well ventilated. The purpose of preventive maintenance of a PC is to minimize or eliminate expensive repairs. This is done by inspection, testing and reconditioning a system at regular intervals to prevent failures in service or deterioration (Answers.com). When working on a computer always be very careful with Electro- Static Discharge (ESD). ESD occurs when two objects of dissimilar charge come in contact with each other such as your body and a computer component. We require antistatic strap while doing preventive maintenance because it equalizes the electrical potentials between you and the server. The antistatic strap is designed to drain electric charges away and provide safety to the user. Four PC components that require preventive maintenance are keyboard, monitor, mouse and CD-ROM/DVD. Dirty CD-ROM/DVD and floppy drives can cause errors while reading and writing. Floppy disk cleaner and CD lens cleaner should be used. Security and removing dust are PC hardware maintenance tasks. Due to hackers, spyware sources and virus codes spreading on the internet, security on a PC is very important. Antivirus programs, firewall, patches and regular software updates can help to protect the computer from viruses and hackers. Computer hardware gathers dust and debris floating around the air and this dust can cause the computers fan to stop cooling off the computer, resulting in an overheated computer. Regular cleaning of a PC will improve the computers performance. Keyboard may not operate due to various reasons such as wear and tear, heavy usage and accidents such as spilled drinks or exposure to extreme temperatures. Keep drinks away from your keyboard and always handle the computer with extra care. Check the mouse connection on the back of the computer for any signs of wear and tear or any other type of damage. Proper ventilation for the video can help with the moisture problem. In summary, taking good care of the computer is very important. Preventative maintenance allows computers run efficiently and prevents breakdowns or failures. Regular cleaning of different parts of a computer; keyboard, mouse, monitor, case, interior, DVD / CD drives and hard drive can improve system reliability, decrease maintenance costs and can as well save you from buying another computer.

Loyalty and Trust in Mark Twains The Adventures of Huckleberry Finn Es

Huckleberry Finn – Loyalty and Trust    Huckleberry Finn does not address questions of law as directly as the other novels that we have read. Ostensibly, Huck is torn between disobeying the slavery laws and honoring his conscious.   However, Huck shows a disregard for other laws throughout the story, so I think that his conflict stems not from a belief that one must obey the law because it is the law, or on a social contract theory.   Huck is never overly concerned with the truth or the norms of society, he adheres to the mores of society because of the consequences as opposed to any fundamental acceptance of them or authority.   Unlike Billy Budd, however, Huck does not seem to be influenced by the fear of corporal punishment, as much as he is concerned with the social consequences that would result if his disobedience was discovered.   The choice that Huck eventually makes is deeper than just choosing to accept the social consequences, he is willing to `go to hell' for Jim, rather than betray the loya lty and trust that has grown between them.      I think that Mark Twain choose an excellent vehicle for the presentation of a sharp, social satire. By letting Huck tell the story, Twain was free to present the ignorance underscoring the mores that were passed onto to children.   Huck interprets the world literally, which starkly contrasts with the romanticism of Tom Sawyer and spiritualism of the widows.   Huck's literalism also allows him more leeway than a third-person narrator can have.   Mark Twain could have presented his criticisms in an essay, or a more sensational, fictional novel; however, he has chosen the most powerful form because the realism of th... ...ppears, because it is possible that Tom's disregard was not based on unintentional, ignorance but rather was intentional and selfish. I will have to re-read Tom Sawyer to consider that question, I remember that was my view the very first time I read the book because I did not read Tom Sawyer first.   I think I changed my mind upon learning that Tom was such a well-known and beloved character, I did not think the audience would accept it.   However, today, I am not sure why I thought the audience's expected acceptance/rejection is indicative of the authors intent. Twain was very dark in his later years, and his use of the dialects, inclusion of the (arrogant, taunting?) notice/explanation (challenge?) and his biting satiric tone indicate that he would not feel constrained by the audiences expectations, and might seek to shock them.     

Democracy Essay

In its simplest term, democracy literally means the rule of the people. It came from the Greek word â€Å"demos† which means people and â€Å"kratos† which means rule. (â€Å"Democracy†) The term democracy was first coined in Ancient Greece. Democracy in Greece was understood to mean the selection of ordinary citizens to government office and courts and the assembly of all the citizens. Through the years, however, democracy as a form of government has evolved into a complex form of government. Despite the changes the concept has undergone, it still espouses the principles of popular sovereignty, political equality, popular consultation and the majority rule. (Austin Ranney, 1995) This essay is concerned with presidential democracy as a form of government. I aim to discuss the advantages and disadvantages of the presidential system. In the concluding part, I will take a stand on this issue. The Advantages of Presidential System It is the essence of every presidential democracy that the three main powers of government are constitutionally divided into thee different departments. Read more: How does big states vs small states guard against tyranny essay The three departments are: a) the legislative branch; b) executive branch; and c) judicial branch. The legislative branch has the power to propose, enact, amend and repeal the law. The executive branch has the power to execute the law. The judiciary has the power to interpret the law. The doctrine of concentration of powers is intended to prevent a concentration of authority in one person or group of persons that might lead to an error or abuse to the prejudice of the whole state. It is believed that any concentration of powers in a single branch is tyrannical and only true separation of powers will protect the liberties of the people against the aggressions of government. (Austin Ranney, p. 240) Moreover, the essence of presidential democracy does not only lie in the constitutional separation of powers but it also lies in the system of checks and balances. The separation of powers in the three branches of government is not synonymous to isolation. In the words of Justice Frankfurter in the case of Connally v. Scudder (160 N.  E. 655), he states that while it is desirable that thee be a certain degree of independence among the several constitutional agencies, it is not in the public interest for them to deal with each other at arm’s length or with a hostile jealousy of their respective rights as this might result in frustration of the common objectives of the government. This means that in reality, these three departments actually share their powers for the purpose of establishing a system by which one department could resist encroachment made by another department. Although there is a separation of powers in a democracy, one department is given the prerogative to check whether another department is exceeding its power and prerogative. For example: the Executive department has the constitutional prerogative to check the power of the Legislative branch to make laws by exercising its veto power. This means that the president of a country has the power not to sign into law or veto a particular bill passed by the legislative branch if the president, thinks that the law is not proper e. g. f the law is not timely. The same is true for the legislative branch of government which has the constitutional prerogative to check on the powers of the president by means of the procedure known as impeachment. The same is true with the President who has the constitutional prerogative to check on the functions of the Judiciary. For example, the president has the power to grant amnesty and pardon to those already convicted and have undergone the process in the judiciary. Another essence of democracy lies in the Rule of Majority. This is best manifested in the process known as election by which the people, in accordance with the principle of popular sovereignty, have the power to choose which among the candidates will govern them for a limited period of time. Disadvantage of Presidential System Though the presidential system may have its advantages, one main objection to this system is the delays caused by too much political conflict and gridlock between the President, Senate and the House of Representatives. Several times in the past that needed legislations have been delayed and blocked because of the political bickering that is always inherent in a Presidential system. It must be stressed that laws are passed to address the concerns of the people. If the passage of laws will be delayed because of the disagreements between the executive and the legislative then the people are the ones who will suffer. Conclusion The democracy is adopted by many countries including the United States. I think presidential democracy is better than the other forms of government. Though it has also its weakness, it is only in a democracy where there is a better balance between the powers of the government and the right of the people. It is this balance that ensures that those in the government will not abuse their powers that the constitution has granted to them. It is also this balance that ensures that the people will not abuse their sovereignty. The fusion of the two essential powers of government such as the power to execute laws and to make and amend laws in the hands of a single person will expose the whole state and the citizenry to the possibility that those in power will abuse their position.

Segregation Is The Division Of People Essay - 1319 Words

Section I Paper: Analysis of Segregation Patterns Segregation is the division of people that share certain racial, social, and economic characteristics from other people of differing characteristics in a defined area. Segregation is mediated by action of specific groups of people leaving areas concentrated with other groups of people of differing interests. Essentially, individuals from these groups voluntarily (based on individual choice and personal preference) or involuntarily (based on external factors such as income and social pressures) segregate themselves from society; by doing so, they create a distanced domain of people that share similar racial, social, and economic characteristics. In a segregated society, â€Å"members of one group are disproportionately concentrated in a particular set of geographical units compared with other groups in the population† (Massey et al. 2009, p. 74). This is initiated by large patterns of individual choice: small preferences in the racial composition of neighborhoods drive some peo ple away from certain areas, leading them to aggregate in other specified areas. At a local scale, segregation seems almost non-existent and individual choice bears no significant burden of the neighborhood; however, at a grand scale, similar preferences that are shared across large groups of people tend to be the outlying cause for the large patterns of segregation between non-Hispanic white people and other minority races. Dissimilarity is a measurementShow MoreRelatedIs God Racist? Essays1019 Words   |  5 Pagesin this country. The churches of America have become racially divided, creating inequalities amongst our populace. Racial divisions run deep, and there is an undeniable relationship between religion and racism. Since the inception of this country, we have been racially divided. 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