Different types of peripheral devices for computers

Different types of peripheral devices for computers Define and describe different types of peripheral devices from all the components with examples. The examples should not include only one type of components only. 1.1 Desktop personal computers 1.1.1 Printer In the computer, printers is a computer peripheral device that produces a hard copy (permanent human-readable text and/or graphics on paper) from data stored in a computer connected to it printers is used to print anything that user want, like pictures, documents or data. A lot of printers are primarily used as local peripherals, and are attached by a printer cable, in largely new printers, a USB cable to computer which serves as a file source. A quantity of printers, normally known as network printers, can serve as a hardcopy device for any user on the network and have built-in network interfaces (characteristically Ethernet and/or wireless). Person printers are often designed to support both network and local connected users at same time. Besides, the minority modern printers can directly interface to electronic media such as flash drive or flash memory cards, or to image capture devices such as digital cameras, scanners; a quantity of printers are combined with a scanners and/or fax machines in a single unit, and can function as photocopiers. Printers that include non-printing features are sometimes called All-In-One (AIO) printers, Multi-Function Devices (MFD), or Multifunction printers (MFP). Most MFPs include printing, scanning, and copying in the middle of their features. 1.1.1.1 The 4 printer qualities of mainly interest to most users are: 1. Resolution Resolutions are generally measured in DPI (dots per inch). Most economical printers provide enough resolution for most purposes at 300 600 dpi. 2. Color Most color printer use 2 ink cartridges (1 black ink and 1 color ink) that after a certain number of pages, then need to replace. The color printer is more expensive to operate. 3. Memory Printer memory (RAM) is built in to the printer and come with a small amount of memory (e.g. 1024kilobyte) that the user can be expanded. 4. Speed Economical printers print speed only about maximum 6 sheets per second. Color printer printing is slower; more expensive printer is much faster. Table 1.1: printer qualities 1.1.1.2Advantages and disadvantages Advantages Disadvantages  · Users can see everything on hard copy whatever users see incomputer monitor.  · The running costs are low and the purchase cost is low.  · Printing is slower; therefore inkjets are not designed for high volume printing.  · If the printer runs out of ink users will have to pay to refill or buy it. Table 1.2: printer advantage and disadvantage 1.1.2 Monitor In computers, monitor is a device similar to a television screen (below 24 inch) that receives video signals from the computer and displays the information for users. The types of monitor have: Cathode-Ray Tube (CRT) and Liquid Crystal Display (LCD). The CRT monitor is the oldest form of display for computer systems.The feature of CRT monitor that pixels are illuminated by an electron beam that passes back and forth across the screen very quickly. The LCD monitor that uses LCDtechnologies quite than the oldCRT technologies used by nearly all desktop computer monitors. The feature of LCD that liquid crystal is sandwiched between two transparent layers to form image. When electric current passes through the liquid crystal solution, the crystals move around, either letting the light shine through or blocking the fluorescent light. 1.1.2.1 The 3 monitor qualities Screen size The diagonal measurement of the screen surface in inches (18.5, 19, 20, 21, 23, 24) Resolution The sharpness of the image or graphic determined by the number of horizontal and pixels (vertical dots) that the screen can display (800 x 600, 1024 x 768, 1600 x 1200). Refresh rate The speed at which the screen is redrawn (refreshed) and measured in Hertz (60, 75Hz) Table 1.3: printer qualities 1.2 Mobile computes 1.2.1 Memory card In computers, the memory card that sometime called flash memory card and storage card. The memory card is a small storage capacity medium to uses to store data such as text, image, music and video, for uses on small, portable or remote computing devices and the memory card can be erased and rewritten with new data. Besides, although other technologies are being developed, most of the current product uses flash memory. There are type of memory card on the market, including the Secure DigitalCard (SD Card), Multi Media Card (MMC), Smart Media Card, Compact FlashCard (CF Card) and Memory stick. Any types of memory card have a differing size and the memory card storage capacity has from 128 MB up to 32GB. 1.2.2 Flash drive In computers, the flash drive (sometime called jump or pen drive) is a small and portable UniversalSerialBus (USB) drive that can be used to rapidly transfer audio, video, image and data files from thehard driveof onecomputerto another. The flash drive storage capacity has from 128 MB up to 64 GB.The flash drive is very easy to use, most recent flash drive is plug_and_play, is not need using anything CD or download any software to install the driver. 1.3 Mobile phone 1.3.1 Headset In computers, the headset is a pair of headphones with a microphone attached. While headphones can only be used as a listening device, the headset can be used as a listening and a recording device through recording through its microphone. As far as listening is concerned, headsets can have all the same functionalities and features as mobile phone, since they are mobile phone, only with the adding of microphone. As far as recording is concerned, headsets usually have a microphone boom attached to one of the speaker ear cups. This boom is designed to be extended to the front of a user is mouth for the user to speak into it, generally at about an inchs distance. This is usually how recording is done with standard headsets. Nevertheless, most new technology is arising in which headsets no longer need microphone booms to record sound. These headsets are called boom less headsets. Nonetheless, the vast majority of headsets use microphone booms. Question 2 Storage is where you save or keep data, instructions, and information for future use. Home users use storage to save data documents, music, etc. Office or business users use storage to keep, their transaction and other office related records. Discuss the various types of storing devices which are available. 2.1 Home users 2.1.1 Flash drive This small device has enough storage capacity to easily manage and transfer large digital files. The flash drive several kinds of storage capacity have 256 MB up to 64GB. Therefore home users need the storage capacity of how much is enough? A 4 GB flash drive is usually enough for sharing some audio files, video and picture. These drive with the storage capacity of 1 or 2 GB will help you store a fair number of audio and video files whereas a 4 GB will let you store too many files. Most of these drives are compatible with all the versions of Windows, the 8.6 and above version of Mac OS and 2.4 and above of Max Kernel without the need of a driver but a few of these need drivers. 2.1.2 Memory card There are type of memory card on the market, including the Secure DigitalCard (SD Card), Multi Media Card (MMC), Smart Media Card, Compact FlashCard (CF Card) and Memory stick. Any types of memory card have a differing size and the memory card storage capacity has from 128 MB up to 32GB. Therefore, home users need the storage capacity of how is enough? A 4 GB memory card is usually enough for storing and sharing some video files, music and picture. As most memory card is use by phone and camera, phone and camera files is not very large, so 4GB storage capacity is enough for home user. When you purchase it, consider the space you will require for sharing files. Use Internet to search different pen drives and compare the prices at various online stores. You should check out the reviews of different drives on various websites which will give you a fair idea of whats good and whats not. 2.1.3 CD-R The CD-R full name is Compact Disc-Recordable. The CD-R is optical storage that store data as tiny pits burned into a disk by laser. The CD-R disks that can be read and written to, but the CD-R disks can only be written for â€Å"once† and drives that are capable of reading and writing data are needed. In side CD-R disks storage capacity is very small, normally each disks only have 700MB storage capacity. Most of use by storing music, picture or movie. 2.1.4 CD-RW The CD-RW full name is Compact Disc-ReWritable. The CD-RW same like CD-R also is optical storage. The different between CD-RW and CD-R is CD-RW is erasable, CD-RW can be written too many times and drives that are capable of reading, writing and erasing data are needed. The CD-RW storage capacity is same with CD-R, most of 700 MB capacity only. 2.1.5 DVD+R/DVD-R DVD+R or DVD-R full name is Digital Video Disk Recordable. They are same, but incompatible with. The disk that is a format for optical data storage. They use technology similar to CD-R. They are capable of storing up to 17 GB of data. Normally 4.7GB storage capacity is enough for home users to storing and sharing some movie video files. Besides, their data transfer rate is comparable to that of hard disk drives and they are compatible with CD-ROM disks. 2.2 Office or business users 2.2.1 External hard disk drive Hard disk drives that storage capacity is up to 1.5 terabytes (TB), is a very big storage capacity storage devices. The Office or business users need to use large storage capacity to keep, their transaction and other office related records. So that External hard disk can provide enough storage capacity for office or business users. Besides, the hard disk drive access time is the fastest among all permanent storage devices. Furthermore the hard disk drive data transfer rate (MB per second) is much faster than other storage devices and spindle speed is measured in revolutions per minute (rpm). 2.2.2 Flash drive This small device has enough storage capacity to easily manage and transfer large digital files. The flash drives that storage capacity is up to 64GB. Therefore, a 64 GB flash drives is usually enough for office or business users use storage to keep, their transaction and other office related records. Besides, Most of flash drives are compatible with all the versions of Windows. Some of flash drives come with the option of password protection so users can have an additional advantage of protecting some of the files that users think need security. Flash drives are more likely to get viruses when these are exposed to the computers that might not be protected. Flash drives are dozens of anti virus software that detect viruses. Users must scan their flash drive every time users are using it. 2.2.3 DVD-R/DVD+R DVD+R or DVD-R full name is Digital Video Disk Recordable. They are same, but incompatible with and the older DVD-R standard. The disk that is a format for optical data storage. The DVD-/+R formal similar CD-R and they are compatible with CD-ROM disks. Besides, their data transfer rate is comparable to that of hard disk drives and they are capable of storing up to 17 GB of data. Therefore, they can support to office or business users use storage to keep, their transaction and other office related records. 2.2.4 DVD+RW The DVD+RW disks short for DVD+ReWritable. The DVD+RW formal similar CD+RW and same are an optical storage. Most of feature same with DVD-/+R, the different is DVD+RW disks allow users to read, write and erase DVDs many time. 2.2.5 Zip disk drive The Zip drive is a magnetic disk. Magnetic disk is a machine thatreadsdatafrom andwritesdata onto adisk. A disk drive rotates the disk very fast and has one or more heads that read and write data. The Zip drive is an earlier 3.5 removable disk drive from Iomega. Zip disks came in 100MB, 250MB and 750MB varieties, with the latter introduced in 2002 using USB and FireWire interfaces. The 250MB drives introduced in 1998, also can read and wrote 100MB disks. The 750MB drives read all, but cannot wrote 100MB disks. The 7050MB drives is only can wrote 250MB and 750MB disks Although the Zip drive storage capacity is very small, the Zip drive is cheaper than other type of storage devices. Nowadays, most of Bank Company still uses the Zip drive to storing, sharing and transfer pure text or document files. Conclusion As conclusion, Computer is important in the modern world reason been is that it helps to simplifies life. If it was not for computer there would still be a lot of hidden information, people would not get to communicate so easy, fast and efficiently, however it is not like that because of computer we now get privilege of all these things. When I finished my assignment, I would like sad I learned a lot from this assignment about types of peripheral devices from the entire component and the various types of storing devices which are available. Besides, I really thank you to Olympia College Johor Bahru, because they give me a chance to study at their college. I also want to thanks my Introduction to Information Technology lecturer: Ms Zali, because she is teaching and guiding me to do the assignment, when I confuse to how to do this assignment. Thanks a lot for her. I am learning more of thing about computer and Information Technology. I will hard working and get a good results.

National Influenza Immunization Program - The Swine Flu of 1976 Essay

In 1976, due to an outbreak of influenza at Fort Dix, New Jersey, the United States set a precedent in immunology by attempting to vaccinate the entire population of the country against the possibility of a swine-type Influenza A epidemic. While a great many people were successfully immunized in a very short period of time, the National Influenza Immunization Program (NIIP) quickly became recognized as a failure, one reason being that the feared epidemic never surfaced at all. But this massive undertaking deserves more analysis than just a simple repudiation. For example, all evidence linked to the pathology, microbiology, and historical cycle of influenza and the outbreak at Fort Dix suggests that the reactions of the scientists and other personnel involved in the NIIP were correct. However, one must also acknowledge the many complications and misjudgments that plagued the program after its initiation, from biological difficulties, logistical problems, to tensions with the media. Th e swine flu is a historical event that needs to be evaluated, regarding both its successes and its failures, so that lessons can be learned for future immunization programs. While influenza, or the "flu", is not commonly recognized as an extremely lethal disease, the pathology of influenza, and especially of the kind found at Fort Dix, does suggest that an immunization program was a reasonable course to take in 1976. In the public's mind, influenza is often not seen as a specific disease, using interchangeable names for it like "flu", "gripe", and "virus". (Silverstein: 1) However, influenza is very different from an everyday low fever or "stomach flu". It is a respiratory infection, connected with a fever, coughing, and muscle aches, which often la... ...d be held responsible for not creating a more adaptable program that could deal with these occurrences. The NIIP must be evaluated for its drawbacks and its successes, so that people will not just see this as an unfortunate historical event, but can use it to help further immunization and disease-fighting programs in the future.    Works Cited The "Flu". Online. 17 Feb. 1999. Available: www.ultranet.com/~jkimball/BiologyPages/I/Influenza.html Laitlin, Elissa A. and Elise M. Pelletier. "The Influenza A/New Jersey(Swine Flu) Vaccine and Guillain-Barrà ©acute; Syndrome: The Arguments for Causal Association." Drugs and Devices Line, 1997. Online. 15 Feb. 1999. Available: www.hsph.harvard.edu/Organizations/ddil/swieflu.html Silverstein, Arthur M. Pure Politics and Impure Science: The Swine Flu Affair. Baltimore and London: The John Hopkins University Press, 1981.

Literary Analysis of Virginia Wolfe’s, Professions for Women

Fueled by the frustration of the masculine control that dominated her era, Virginia Woolf displayed her deepest feelings of oppression in her essay â€Å"Professions for Women†. Written in 1931, â€Å"Professions for Women† shows the internal conflict many women battled fiercely with when living their everyday lives. Woolf tells a story of a figurative â€Å"Angel in the House†, which is a stereotypical woman of the Victorian era and her efforts to break free from this stereotypical template. Woolf felt that for women to show men their true potential, they must wander beyond what society expects them to be and become an individual. Virginia Woolf’s skillful utilization of metaphorical diction and repetitious phrases help present her ideals to the reader while remaining rhetorically efficient. The â€Å"Angel in the House† example was referred to in numerous occasions in â€Å"Professions for Women†. The Angel was â€Å"charming†, â€Å"sympathetic† and â€Å"sympathetic† all qualities of a stereotypical woman in the Victorian era. Woolf’s diction implied dislike towards the Angel, stating â€Å"it was she who bothered me and wasted my time and so tormented me that at last I killed her†. Yet through extensive criticism, Woolf still referred to the Angel as â€Å"pure† and spoke of her good characteristics. The Angel in the House was a good thing and a bad thing. Good because all of her qualities were quite positive and seemed like a nice person, but bad because inadvertently, all these caring characteristics were holding women back from becoming their own individual. Instead of being an independent thinker, the Angel depended on men to support her and did not hesitate to serve them. The Angel would torment Woolf, telling her â€Å"Never let anybody guess you have a mind of your own† and because of the Angel’s messages; Woolf was forced to metaphorically â€Å"kill† the Angel to be able to think for herself. The Angel encompassed everything Woolf wanted to avoid; a naive, oblivious woman who was undermined by her masculine counterparts. Virginia Woolf wanted to create a profound effect on the readers of her work and her words reflect that goal. To solidify and strengthen some of her argument, Woolf took advantage of repeating phrases. When describing the Angel Woolf states, â€Å"She was immensely charming. She was utterly unselfish. She excelled in the difficult arts of family life. She sacrificed herself daily†. Woolf chose to use repetitious phrases and anaphors to reinforce the qualities of the Angel. If Woolf had simply listed the characteristics of he Angel, the description would have been weakened and less meaningful. Woolf uses a polymerization of two strategies to emphasize her purpose in the conclusion of her work â€Å"†¦how are you going to decorate it? With whom are you going to share it, and upon what terms†? Repeating rhetorical questions supplements her argument and provokes thought within the reader, which was Woolf’s goal from the beginning. Even though it was written in a n entirely different era, â€Å"Professions for Women† has many components that can be compared to live in the 21st century. Woolf was tied between two internal personas; the stereotypical, feeble minded woman (The Angel) and an independent, intellectually skilled writer and â€Å"Professions for Women† explores her internal battle with these distinct personalities. Purposefully, Wolf wanted to show that women could be independent and relinquish themselves from the mold society created. In today’s age we must ponder within ourselves; why as a society do we feel we must create models for people to follow? Can they make groups feel inferior to others?

Christian, Islam, and Judaism - 1397 Words

Vinh Phan Chris Verschage Hum 2133 – W03 April 19, 2008 Christianity, Judaism, and Islam Every religion has its own goal, and their own path and believe to reach their goals, however there are also many similarities in believes. Although the followers of Judaism, Christianity, and Islam may see things differently, they all fundamentally hold the same values and codes. To Islam, the Prophet Mohammad’s teaching is a complete and final revelation. On the other hand, according to the bible, Christianity believes that Jesus Christ is the true lord and savior will grant you the access to heaven in the afterlife. Judaism is founded by Abraham, and it is the base from which both of the other two religions sprung. Even though the three†¦show more content†¦For Judaism, the word â€Å"pray† means â€Å"divine† and emphasizes the One to whom prayer is director. With Jewish, prayer is an integral part of everyday life. One of the purposes of prayer is to increase their awareness of God in their life, and the role that God plays in their life. Th e most important part of any Jewish prayer is the introspection it provides, the moment that they spend looking inside ourselves, seeing their role in the universe and their relationship to God. For Islam, the main purpose of prayer is to lead one to do good, to refrain from evil and to behave better towards others. In Christianity and Islam, it is peoples sin that places them in danger of punishment after death. Sin and salvation are central categories in Christian theology and spirituality. Christianity teaches that the effects of original sin have corrupted the world and the human beings who exist in it. They believe that all human beigns are born into the world with a sinful nature because of the transgression of Adam. Being saved, in Christianity, individuals are thought of as being saved from eternal punishment through Jesus’ death on the cross. Although Islam and Judaism acknowledges that man does commit acts of sin, there is not a sense of man being totally depraved or unworthy as is found in Christian theology. In Islam, there is no such a thing as original sin. According to Islamic belief,Show MoreRelatedChristian Worldview : Christianity, Islam, Hindu, Jewish, And Judaism1959 Words   |  8 PagesChristian Worldview Do you belong to any religion and adhere to the practices of the religion? People need to ask themselves whether they belong to any religion and whether they adhere to the practices of the particular religion in order to establish their spiritual ascription. There exist different religions in the world that follow different religious practices and beliefs. The difference occurs in the sense that what might appear to be correct or right in one religion might actually be wrong inRead MoreJudaism, Christianity, And Islam1052 Words   |  5 PagesMichaud 417868 Judaism, Christianity, and Islam There are roughly 4,200 different religions in the world today, among them the largest are Judaism, Christianity, and Islam. These three religions are more similar then one would think. Christianity is the largest religion in the world with 2 billion followers and are called Christians. Islam is the second largest religion in the world with 1.3 billion followers. They are called Muslims, which means â€Å"one who strives to summit to god.†(Christian answers)Read MoreThree Main Religions in the Middle East 897 Words   |  4 Pagesreferring to the religions in the Middle East countries, such as Iran, Iraq, etc. The religions are Christianity, Islam, and Judaism. With the close proximity of these countries, but the differing views on things, mainly religion, creates some conflicts and hostility. In America, people are allowed to worship who they want, and believe in what they choose. When someone says they are Christian, there is not a lot of judgement passed, but in these othe r places, religion rules all. Today we will be assessingRead More Trinity of Beliefs Essay1361 Words   |  6 Pagesreligions of Judaism, Christianity and Islam, which are all closely related, are examined. All three of these religions are Western, they are monotheistic, and together they form the Abramic religions. Judaism is the oldest, dating from around 2000 BC and the most ancient religion still practiced in todays society; Christianity originates from shortly after the death of Jesus Christ; Islam is the youngest, emerging in the seventh century AD. It would appear, then, that Christianity and Islam are descendedRead MoreThe Prophet, Muhammad, Islam1349 Words   |  6 PagesThe prophet, Muhammad founded Islam in 622 C.E. at the Arabian Peninsula. Judaism and Christianity both originate in Palestine, but Judaism commenced over 3,500 years ago while Christianity found its beginning in 33 C.E. Christianity was created by Christ, the son of God, while Abraham was the man credite d with founding Judaism. Assuredly, albeit Judaism, Christianity and Islam were founded in divergent times, the religions still hold similarities in beliefs and teachings. However, differentiationsRead MoreSimilarities Between Christianity And Islam1332 Words   |  6 Pagesthere are many similarities in beliefs. Although the followers of Judaism, Christianity, and Islam may see things differently, they all fundamentally hold the same values and codes. To Islam, the Prophet Mohammad’s teaching is a complete and final revelation. On the other hand, according to the bible, Christianity believes that Jesus Christ is the true lord and savior that will grant you the access to heaven in the afterlife. Judaism is founded by Abraham and it is the base from which both of the otherRead MoreChristianity, Islam, And Judaism1636 Words   |  7 PagesChristianity, Islam, and Judaism All three religions believe and worship the same God but they do it in different ways. Judaism happens to be the oldest religion today but they don’t have an official creed. They aim to teach you about God, the Messiah, human beings, and the universe which makes Jewish beliefs very important to them. But it is important to understand that being Jewish is more of a race and culture than it is a religion. Some Jewish people may have no interest in Judaism. Judaism has someRead MoreChristianity, Hinduism, And Islam1054 Words   |  5 Pagesare also many similarities in their believes. Although the followers of Judaism, Christianity, and Islam may see things differently, they basically hold the same values and codes. To Islam, the Prophet Mohammad’s teaching is a â€Å"complete and final revelation†. On the other hand, according to the bible, Christianity believes that Jesus Christ is the true lord and savior will grant you the access to heaven in the afterlife. Jud aism is founded by Abraham, and it is the base from which both of the otherRead MoreJudaism, Christianity, and Islam1538 Words   |  6 PagesJudaism, Christianity and Islam Christianity and Islam are the most influential religions in the world. Judaism has only fourteen million followers across the continents which makes Judaism the 12th largest religion. Although Judaism is not as large as Christianity and Islam, It still has an impact on the world. Prophet Abraham is the called in Islam the father of all prophets and because of that, sometimes Christianity, Islam and Judaism are called Abrahamic Religions. There are many known differencesRead MoreWorld Religions and the North Africa/Southwest Asia Realm854 Words   |  4 Pagesreligions; Christianity, Judaism and Islam. Centuries of conflict lie at the heart of this realm due to differences in religious beliefs. In reviewing the scripture readings presented for this lesson, each religion has one intrinsic similarity; that is the belief in God. Where both Islam and Judaism view God as one entity, Christians believe in the Trinity (Father, Son and Holy Spirit), (Islam, Judaism and, 2004-2013). Review of the scripture readings show that both Judaism and Christianity are