Components Of A Computer System

Components Of A Computer System Computer is an electronic machine that can store, organize and search information, do calculation and control other machines. Computer has hardware and also software. Computer hardware means the physical component of a computer system, which has different functions to complete different tasks. Hardware is something we can touch. This hardware includes input devices, output devices, a system unit, storage devices, and communications devices. This could be a monitor, memory chip, hard drive, or CPU. Computer software is the collection of computer programs and related data that provide the instructions telling a computer what to do and how to do it. Software refers to one or more computer programs and data held in the storage of the computer for some purposes. Program software performs the function of the program it implements, either by directly providing instructions to the computer hardware or by serving as input to another piece of software. Software is intangible. Examples of software are application software and system software. Without software, hardware is useless.hero_06_software.jpg Computer Specification Each computer has own computer specification. The computer that Im going to discuss about its specification is HP ProBook 4420s. HP-ProBook-4420s-Notebook-PC_400x400.jpg Processor Intel Core i3-370M Processor (2.4 GHz, 3 MB L3 cache) Memory 2 GB 1066 MHz DDR3 SDRAM Chipset Mobile Intel ® HM57 Express Operating System Windows 7 Ultimate Graphic card ATI Mobility Radeon HD 5470 with 512 MB dedicated video memory Internal drive 320 GB 7200 rpm SATA II Optical disk drive DVD+/-RW SuperMulti DL LightScribe Display 14.0 diagonal LED-backlit HD anti-glare (1366 x 768) Integrated camera 2.0 MP webcam Weight and dimension- 2.27 kg, 33.60 x 23.24 x 2.70 cm Battery type and life 6-cell (47 WHr) Li-Ion, up to 4 hours and 30 minutes Processor: The processor of this laptop is Intel Core i3-370M. Processor is also called the central processing unit (CPU). It is the electronic component that interprets and carries out the basic instructions that operate a computer. Furthermore, it is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computers functions. The central processing unit carries out each instruction of the program in sequence, to perform the basic arithmetical, logical, and input/output operations of the system. System clock: The processor relies on a small quartz crystal circuit called the system clock to control the timing of all computer operations. The pace of the system clock, called the clock speed, is measured by number of ticks per second. The clock speed for this processor of this laptop is 2.40GHz (Giga Hertz). The clock rate is the speed at which a microprocessor executes instructions. Every computer contains an internal clock that regulates the rate at which instructions are executed and synchronizes all the various computer components. The CPU requires a fixed number of clock ticks (or clock cycles) to execute each instruction. The faster the clock, the more instructions the CPU can execute per second. Cache: Most of todays computers improve their processing times with cache. Memory cache helps speed the processes of the computer because it stores frequently used instructions and data. This laptop is having L3 cache on the motherboard which is separate from the processor chip. Memory: Memory is the primary storage. It consists of electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data which is information. Most Random access memory (RAM) is volatile, which means it loses its contents when the power is removed from the computer. The RAM of this laptop is 2 GB 1066 MHz DDR3 SDRAM. SDRAM refers to Synchronous DRAM, which can synchronized to the system clock and it is much faster than DRAM. Chipset: Chipset of this laptop is Mobile Intel ® HM57 Express. A chipset refers to a group of integrated circuits, or chips, that are designed to work together. They are usually marketed as a single product. It is usually designed to work with a specific family of microprocessors. Because it controls communications between the processor and external devices, the chipset is used to determine the system performance. The mobile Intel ® HM57 Express Chipset is part of the mobile Intel ® 5 Series Chipsets, providing single chip architecture and delivering: Intel ® Anti-Theft Technology for PC protection that can disable a lost or stolen PC and reactivate it without compromise to the system or data Blue-ray* logo capable HD video playback, with native support for Blue-ray drives Intel ® Rapid Storage Technology for enhanced performance, power management, and data protection for the storage subsystem Operating System: An operating system (OS) is software, consisting of programs and data, that runs on computers and manages computer hardware resources and provides common services for efficient execution of various application software. Examples of popular modern operating systems for personal computers are Microsoft Windows, Mac OS X, and GNU/Linux. The operating system that installed in this laptop is Windows 7 Ultimate 64-bit. Graphic Card: The graphic card included in this laptop is ATI Mobility Radeon HD 5470 with 512 MB dedicated video memory. This graphic card has 512MB of dedicated DDR3 VRAM (Video RAM), which means it has 512MB for storing data (not combining with computer RAM). The higher the memory of VRAM, the better the graphical item (such as picture, video, and game loading) can be presented and better loading time. Internal drive: The hard disk included in this laptop is 320 GB 7200 rpm SATA II. A hard disk drive (HDD) is a non-volatile, random access device for digital data. It features rotating rigid platters on a motor-driven spindle within a protective enclosure. Data is magnetically read and written on the platter by read/write heads that float on a film of air above the platters. SATA II is the second generation SATA interfaces running at 3.0 Gbit/s are shipping in high volume as of 2010[update], and prevalent in all SATA disk drives and the majority of PC and server chipsets. With a native transfer rate of 3.0 Gbit/s, and taking 8b/10b encoding into account, the maximum uncoded transfer rate is 2.4 Gbit/s (300 MB/s). Optical disc drive: The optical disc drive in this laptop is DVD+/-RW SuperMulti DL LightScribe . It is support for the Blu-ray DVD drive on configurations with integrated graphics requires Windows7 or Windows Vista. Optical disc drives are an integral part of stand-alone consumer appliances such as CD players, DVD players and DVD recorders. They are also very commonly used in computers to read software and consumer media distributed in disc form, and to record discs for archival and data exchange. Others: The display of this laptop is 14.0 diagonal LED-backlit HD anti-glare (1366 x 768). Furthermore, this laptop is only weighed 2.27 kg and has a dimension of 33.60 x 23.24 x 2.70 cm. This laptop of has a webcam which is 2.0MP. Meanwhile, this laptop use the battery of 6-cell (47 WHr) Li-Ion and it can last up to 4 hours and 30 minutes. Analysis of Overall Performance This laptop is using a processor of Intel Core i3-370M Processor.

Book Review: Little Girl Lost Essays -- essays research papers

PART A Little Girl Lost is an autobiography of Drew Barrymore co-written with PEOPLE magazine's Todd Gold. Drew Barrymore, a twenty-five year old actress (ET, Never Been Kissed, to-be-released Charlie's Angels) has overcome an addiction, proven herself to be a competent, intelligent woman, and is a major influential role model among today's teenage girls. Her biography begins with her first blockbuster, ET, and her experiences while filming and during post-production, as well as the relationships that were made and have served as basis of support throughout her whole life (Steven Spielberg as her Godfather). From there Drew travels backwards, providing a brief background of her parents, of her role in continuing the Barrymore family legacy within film industry, and then of the Barrymore's tendency to indulge in drugs and alcohol. Drew confronts the tabloids and gossip columns regarding the attention she received at such a young age, acknowledging the belief by many that she was a victim of 'celebrity glamour and fame'. Drew argues that her addiction to mind-altering substances stemmed not from the high profile lifestyle, but from her insecurities as a young girl conquering adolescence. When she was not filming, Drew attempted a normal life by attending a public school, where she was isolated because of her erratic schedules and enormous amounts of public speculation. Unfortunately, Drew longed for a regular life with real friends and a family similar to those of her clas...

Understanding AIDS and the Concept of Collective Effort (AIDS: A Bird’s Eye View)

Over the years, AIDS has been one of the most prevalent health problems worldwide. Various efforts by different organizations is being undertaken in order to arrest the disease’s continuous spread. However, given the complex nature of AIDS the whole world is left with more serious problems, which if not given proper attention and care may aggravate further the safety of the people.For the purpose of this paper, the author aims to discuss the nature of AIDS as a disease. Likewise, it is also the objective of the author to illustrate how the disease understudy can become a serious threat to an individual’s health as well as discuss how the occurrence of AIDS can be prevented if not minimized.What is AIDS?According to various lexicons, AIDS is an acronym for Acquired Immunodeficiency Syndrome. AIDS is a health problem caused by a virus commonly known as HIV or Human Immunodeficiency Virus (NIAD, 2005). AIDS is actually considered a result of severe HIV infection. Hence, ot her references regard AIDS as the advance stage of HIV infection (NIAD, 2005).How does an individual acquire AIDS?AIDS and or HIV infection may be acquired by an individual in a number ways. Below are some examples of how AIDS or HIV is transmitted from one individual to another:1.    Blood Transfusion – during those years when techniques to easily detect HIV in the blood of a donor is not yet known, the recipient of the blood donor easily acquires HIV infection due to the transfer of infected blood.2.  Ã‚  Ã‚  Ã‚  Ã‚   Contaminated needles, syringes, etc.- the use or sharing of medical instruments such as needles and syringes that have been used to extract blood   from an individual with HIV infection also contributes to the spread of the disease.3.  Ã‚  Ã‚  Ã‚  Ã‚   Sexual Intercourse – engaging in unprotected sex can also cause an individual to acquire HIV infection or AIDS. HIV penetrates the lining the vagina, vulva, penis, rectum, or the mouth.4.  Ã‚  Ã ‚  Ã‚  Ã‚   Breast Feeding- Mothers who has the infection can easily transmit the virus to its new born my means of breast feeding.Once HIV enters the body of an individual, it directly attacks the immune system of the human body. The AIDS- causing virus, once it enters the human body, disguises itself as an antibody- producing cell.It continues to attack the immune system until such time that the body can no longer produce an antibody to counter the disguised cells. This is made possible by the failure of the immune system to distinguish an antibody from the virus.Thus causing an HIV infected person to progressively weaken. Some of the symptoms exhibited by a person with HIV infections and or AIDS are as follows (Lecture Notes in Health Science IV):a.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Feverb.  Ã‚  Ã‚  Ã‚  Ã‚   Headachec.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Lack of energyd.  Ã‚  Ã‚  Ã‚  Ã‚   Enlarged lymph nodese.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Weight Lossf.  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Short-term memory LossAdd ressing AIDS is a Collective EffortTaking into account the nature of HIV and the numerous ways it can be acquired by an individual, it cannot be gainsaid that the only way to prevent if not minimize the occurrence of AIDS-related cases is by means of refraining oneself from engaging in risky activities such as unprotected sex and by always observing proper personal hygiene.Addressing the spread of AIDS is actually a collective effort. It is necessary and imperative for each and every individual to become extra careful with things so as not to further aggravate the continuous spread of AIDS especially that there is no vaccine available in the market yet to readily curtail the spread of this pandemic disease.ReferencesJASMS-PWU. Lecture Notes in Health Science IV (1993).National Institute of Allergy and Infectious Diseases. HIV Infection and AIDS. Retrieved February 19, 2007 from the NIAID Website: http://niaid.nih.gov.

Human Resource Management and Strategic Human Resource...

Stone, RJ 2010, Managing Human Resources, 3rd edn, John Wiley Sons, Milton, Qld. In chapter 1 of the text, the author shows an overview of human resource management and strategic human resource management. The author also shows the relationship between HRM and management, manager’s role meaning of strategy, strategic approach to HRM and strategic challenges. Lots of diagrams and explanations are used by the author. This chapter has contributed to my understanding of strategic human resource management by analysing the objectives and plans of SHRM. As known that strategic HRM focuses on the linking of all HR activities with the organisation’s strategic objectives, there are cost containment, customer service, organisational†¦show more content†¦The authors research how the use of human resource information systems contributes to the effectiveness of strategic human resource management and prove the importance of using HRIS in an organisation. By analysis 34 companies’ data, a organisation use human resource information systems will reducing producing cost and saving time, the most important point is make sure better contributions to strategic decision making. This article use powerful data analysis the importance of HRIS, start and sustain human resource information system use are critical. Now days, organization become more complex and process more information, HRIS could help an organization determines what kind of information should provide to decision maker. The authors introduce the system is more than a simple aggregation mechanism for inventory control and accounting, is a management tool. Due to many manager are concerned about the cost of start the human resource information system in organization, the authors given the answer that the system will maintained efficiently and cost-effectively. The major strengths of this article is, the authors proved the advantages of implementing human resource information system by real data, and describes HRIS work principle. Becker, BE Huselid, MA 2010, ‘SHRM and job design: Narrowing the divide’, Journal of Organizational Behaviour, vol.31, no.2/3, pp.379-388Show MoreRelatedHuman Resources Management And Strategic Human Resource Management Essay3465 Words   |  14 Pages Q-1(A) Three major difference between human resource management and strategic human resource management Human resource management Strategic human resource management 1. HRM have â€Å"Short term goals† only like give training to the employees etc. For example in Tarmac short term goal is like recruit people for certain project only. 1. SHRM have â€Å"long term goals †like give the cross training to the employees. 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