Database System Basics

Database System Basics A computer system is made of different electronic components and parts that make it look complex. These fundamental components constitute a computer system that makes a computer to run effectively. The first component is the motherboard that forms a perfect platform on which internal electronic components are attached (Miller 67).Advertising We will write a custom essay sample on Database System Basics specifically for you for only $16.05 $11/page Learn More The motherboard consolidates all the basic components of a computer system. All the programs and applications in a computer system are run by a component known as the central processing unit. It is impossible for a computer to execute any tasks without the central processing unit (Miller 67). A computer can only boot to the operating system courtesy of the central processing unit. A computer system can not be complete without the storage media. The Random Access Memory commonly referred to as RAM is anot her fundamental component in a computer system that is responsible for storing files and information temporarily when the computer is running. The size of the Random Access Memory determines how fast the computer responds to commands. A computer with a low Random Access Memory will run slowly even if it has a powerful central processing unit. The other storage component in a computer system is the hard disk drive. Compared to the Random Access Memory, the hard disk drive stores data for a long time. The hard disk is able to retain the stored data and information with or without power. The data in the Random Access Memory disappears the moment the computer goes off. Because of its reliability, the hard disk is used to store very important files like system files and other program files.Advertising Looking for essay on computer science? Let's see if we can help you! Get your first paper with 15% OFF Learn More The other components include the power supply unit that is responsible for powering the computer system and the video card that is essential in displaying images. The graphics card makes the images and pictures appearing on the computer monitor to look clear and detailed (Pearsons 53). There are various ways in which the computer interacts with users on a daily basis. The user interacts with the computer system through the input and output devices. A combination of software and hardware form what is normally referred to as the user interface. The software enables the monitor to display the output on the computer monitor (Pearsons 53). The computer system receives input from users through hardware devices like the mouse, keyboard, joystick, game controller, touch screen and other peripherals. These input devices are referred to as peripherals because they are externally attached to the computer system. After processing the input in relation to the specified command, the user receives output from the computer system via output devices . Some of the output hardware includes the monitor and the printer. Human-computer interaction requires the user to be well equipped with the relevant computing skills and knowledge to be able to navigate the computer system effectively. The user is required to have some basic knowledge in computer operating systems, computer graphics, programming, database management and computer hardware technology. The computer is very useful in the sense that it helps human beings to process and store their data in a much simpler way. Computer applications such as the internet and computer games have enhanced human- computer interactions by necessitating information retrieval, electronic commerce and entertainment.Advertising We will write a custom essay sample on Database System Basics specifically for you for only $16.05 $11/page Learn More Miller, Michael. Absolute Beginner’s Guide to Computer Basics. New York: Que Publishing, 2007. Print. Pearsons, June Oja Dan. New Perspectives on Computer Concepts2012: Brief. New York: Cengage Learning, 2011. Print.

The Light of Sight essays

The Light of Sight essays In this universe there are many thing that we cannot explain. Among these many things is light. Light, as far as we know, come in different wavelengths and the size of the wavelength determine what type of light it is. The middle wavelength lights are what gives us the seven basic colors of red, orange, yellow, green, blue, indigo and violet. Beside these visible lights there are the lights that cannot be seen by the human eye. These invisible lights can be grouped into two other groups the long waves and short waves. The first group of waves is the longer wavelength of light including infrared and radio waves. Radio waves, the longest wavelengths, alternate and can be volatile. Arthur C. Clarke said in the essay "The Light of Common Day" that since radio waves fluctuate so much no animal has ever been able to sense them. He goes on to say that if you had an eye big enough to see radio waves your eyes would be millions of times larger than a normal eye. The next longest wave is the infrared light waves. Infrared light is used nowadays to see in the night. Special goggles are designed to pick up infrared light making it possible to see at night. The next group of light waves are the shorter waves of ultraviolet and x-rays. Ultraviolet light, sometimes referred to as UV, is right next to violet and is just beyond sight. UV light is what causes sunburns and can be very painful. In Arthur C. Clarks essay it states that even though UV light is not visible the retina of the human eye reacts powerfully to it. He compare the human eye to a camera and says that a good camera need may types of lenses made out of different types of glass to take a good picture. The human eye has only one lens and cannot possible see UV light. The last type of light is the x-ray. The x-ray is the smallest wave and is used in the medical field greatly to take pictures through flesh of bones. Even though x-rays are very useful they can be very...

Value Diversity in Workplace Essay Example | Topics and Well Written Essays - 1000 words

Value Diversity in Workplace - Essay Example Every company needs to have a solid legal framework behind its diversity policies. According to Tyre, (2007) " while there is no specific law governing 'diversity' per se, the framework for diversity is shaped by judicial interpretations of actions taken to affect diversity that violate equal opportunity or constitutional rights" (n.p.) A good diversity program should not be subject to any quotas or any inherent rigidity ; in actuality it should be flexible and permeable. Setting aside a quota would merely perpetuate the notion of the 'minority', and would merely pave the path to more discrimination. Aside from that, it would serve companies significantly if it hire people based on the entirety of their qualifications, and not just utilizing race as the primary mitigating factor. The essential challenge facing employers is to create a working environment where people working at all levels are ingrained with the company's drive and vision, and they are continually recognized for their efforts. Executing this platform effectively would ensure a synergistic approach towards innovation, growth, and success. Culled from my own personal experience, I have borne witness to several situations where workforce diversity could have been a mitigating factor if only properly executed and rendered. One particular incident which particularly stands out was during my stint as a sales representative for one of the nation's leading real estate firms. The company specialized in developing properties in the Mayaguez and Aguada areas. The primary duty assigned to me was to handle its premium line of exclusive oceanfront homes, which appeal to a very high-end niche market. A good part of the company's prospective clientele is comprised of wealthy foreigners looking for a good vacation home in the country. My experience had me dealing with a rich politician hailing from the Dominican Republic. He had some close ties in the Aguada area, and was planning on buying a vacation home with his new wife. I was tasked to handle his account, and he was very keen on purchasing one of our featured properties, which was an oceanfront, three- level home worth $535,000. If the deal would fall through it would have been my biggest sale at the time, and would have greatly augmented the company's flagging fortunes. This happened at a time when the housing market was really plummeting, and real estate companies were fighting tooth and nail for every sale that they could get their hands on. The effects of the subprime mortgage crisis were far-reaching, and a sale of this magnitude would have certainly helped my company a great big deal. I had personally accompanied the couple to the site, and they were highly impressed with the oceanfront property. They were displaying a high level of interest, and I was almost certain that this was a sure sale. I could almost feel that my fat commission was on the way. The main issue emanated from what at first seemed like an almost trivial matter. On the way back from our viewing trip, the client had learned that the driver of the company car that we were using also hailed from the Dominican Republic. They engaged in light banter, and I thought that was a pleasant coincidence. My complacency soon was shaken, as