Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
History and Evolution of Computers
The evolution in the history of computers (including thedifferent generations of computers
History and Evolution of Computers
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Recommended: History and Evolution of Computers
Operating Systems
Operating Systems
An operating system is the program that manages all the application programs in a computer system. This also includes managing the input and output devices, and assigning system resources.
Operating systems evolved as the solution to the problems that were evident in early computer systems, and coincide with the changing computer systems. Three cycles are clear in the evolution of computers, the mainframe computers, minicomputers and microcomputers, and each of these stages influenced the development of operating systems.
Now, advances in software and hardware technologies have resulted in an increased demand for more sophisticated and powerful operating systems, with each new generation able to handle and perform more complex tasks. The folowing report examines the development of operating systems, and how the changing tehcnology shaped the evolution of operating systems.
First Generation Computers (1945?1955)
In the mid?1940's enormous machines capable of performing numerical calculations were created. The machine consisted of vacuum tubes and plugboards, and programming was done purely in machine code. Programming languages were unheard of during the early part of the period, and each machine was specifically assembled to carry out a particular calculation.
These early computers had no need for an operating system and were operated directly from the operator's console by a computer programmer, who had immediate knowledge of the computers design.
By the early 1950's punched cards were introduced, allowing programs to be written and read directly from the card, instead of using plugboards.
Second Generation Computers (1955?1965)
In the mid?1950's, the transistor was introduced, creating a more reliable computer. Computers were used primarily for scientific and engineering calculations and were programmed mainly in FORTRAN and assembly language.
As computers became more reliable they also became more business orientated, although they were still very large and expensive. Because of the expenditure, the productiveness of the system had to be magnified as to ensure cost effectiveness. Job scheduling and the hiring of computer operators, ensured that the computer was used effectively and crucial time was not wasted.
Loading the compliers was a time consuming process as each complier was k...
... middle of paper ...
...or personal computers.
Modern Operating Systems
The past 9 years have seen many advances in computers and their operating systems. Processors continue to increase in speed, each requiring an operating system to handle the new developments. Microsoft Corporation has dominated the IBM compatible world, Windows being the standard operating system for majority of personal computers.
Now as computing and information technology becomes more towards the Internet and virtual computing, so too must the operating systems.
In 1992, Microsoft for Workgroups 3.1 was introduced, extending on from the previous versions. It allowed the sending of electronic mail, and provided advanced networking capabilities to be used as a client on an existing local area network. This was only the one stage in the vast evolution of the worlds most popular operating system, with the most recent being Windows NT and Windows 98, the latter being a fully Internet integrated operating system. Windows, however is not the only operating system in use today. Other's such as UNIX, Apple Operating System and OS/Warp have also had an impact, each new version more advanced, and more user friendly then the last.
...area. Researchers have realized that even though foot patrol did not exactly lower the rate of the crimes as they have hoped for, but they did realize that maybe people would not commit crimes in those areas if they knew that officers are around almost at every other corner and they would be easily caught right away. Also, in this article, it has been noted that close contact between police and the people helps the former develop first-hand information about crime and possible criminal behavior. Information system such as this is more likely to have a positive long-term impact.
The United States is a major port for human trafficking and, “Due to the covert nature of human trafficking, it is difficult to ascertain which countries are the primary source nations for trafficking into the US” (Hepburn). People of all ages and genders are at risk to human trafficking (Hepburn). Women and girls make up about fifty-six percent of the people trafficked for forced labor, while men and boys make up the other forty-four percent; children make up forty to fifty percent of those numbers (Hepburn). Ninety-eight percent of the people trafficked for sexual explorations are women and girls (Hepburn). Children tend to be targeted more than adults because they are much more vulnerable. Human trafficking has different forms, and “While trafficking for the purposes of commercial sexual exploitation is more publicized in the media, it is not the only form of trafficking that takes place in the US” (Hepburn). Trafficking for the purposes of forced labor is just as likely to occur as trafficking for the purposes of sexual exploitation (Hepburn). Many citizens have never heard of human trafficking for something other than sexual exploitation. Hepburn shows that, “Forty-three percent are trafficked for purposes of...
Summary: We see that there are many different aspects and types of human trafficking that everyone should be made aware of. As a whole human trafficking is a lucrative industry raking in $150 BILLION globally. The impact that this industry has on its victims is
The subject of this term paper will be about computers in the 1950’s. The divisions that will be covered are; the types of computers there were, the memory capacity of computers, the programming languages of that time, and the uses of the computers for that time. Information will be gathered from the Internet, from books, and from magazines, and from the encyclopedia.
As the internet is becoming faster and faster, an operating system (OS) is needed to manage the data in computers. An Operating system can be considered to be a set of programed codes that are created to control hardware such as computers. In 1985 Windows was established as an operating system and a year earlier Mac OS was established, and they have dominated the market of the computer programs since that time. Although, many companies have provided other operating systems, most users still prefer Mac as the most secured system and windows as it provides more multiple functions. This essay will demonstrate the differences between windows
The topic of network security is a reoccurring theme in today’s business world. There is an almost unfathomable amount of data generated, transmitted, and stored every day. Unfortunately the media and traditional reporting sources these days typically only focus on outside threats such as hackers. Many people completely overlook the insider threats that are present and can potentially pose and even bigger threat then any outside source. One of the acronyms that is constantly repeated in the security industry is the principle of CIA or confidentiality, integrity, and availability. Authorized users, whether by accident or through malicious acts, are in a unique position to threaten all three aspects of CIA.
was introduce in 1971. IBM then came out with more advance computers such as System/38 in 1978 and the AS / 400 in 1988.
There are several themes that are brought up in this book. However, I will focus on one, the relationship between pain and pleasure. In our world it is often said you must have one to fully appreciate the other. One cannot enjoy the pleasures in life if one does not have a memory bank of the despair life can throw at you. The community has realized the importance of memory in one aspect that it knows memory is important in order to not make the same mistakes twice. And in order to fulfill that it made one person responsible for keeping the communities collective memories whether they were pleasurable or painful.
Operating systems are complex structures of information, or data, that is stored in programs, files, folders, and much more. Operating systems consist of software, which are bunches of programs. An operating system is the software that stores data and information that a user inputs. The processing of input occurs through the user entering information through the keyboard, also called “keying in information.” This precise definition provides background information to the fact that operating systems are composed of a central idea. Operating systems are the key element that allows someone to use a computer. This idea sparked the creation of the first operating system in the 1960’s by the General Motors Research Laboratories.
Then came Linus Benedict Torvalds. At the time he was a sophomore majoring in Computer Science at the University of Helsinki, his hobby also included computer programming. At 21 he found himself spending most of his time toying with computer systems, trying to see what he could do in order to push their limits and increase their functionality. The key missing in his tests was an operating system that had the flexibility craved for by professionals. MINIX was available, though it was still just a stu...
Human trafficking, or the selling and buying of people, is a well-hidden yet prominent issue within today’s society. It is both an immoral and horrific topic that needs brought to attention and dealt with. When human beings are manipulated into work, sexual servitude, or economic hardship, human trafficking is occurring. In the year of 2006, only one individual is convicted of human trafficking per 800 victims (UNGIFT). By looking at straight statistics, reasons human trafficking happens, and the toll it has on people, it is very clear that this is a major issue that is happening in our world.
Identifying the victims is the first step to the healing process. Victims can develop health problems that may bring them to a hospital, inevitably bringing them in contact with a social worker. “Some research suggest that 28 percent of trafficked women visited a health professional while being trafficked” (Hodge, 2014). There are three major indicators that social workers need to use to detect the presence of trafficking. The first indicator is the type of situation the victim is in. Some examples include not have the correct medical documentation, having signs of physical abuse (abuse to private areas of the body) and the constant watch of an individual (a pimp). The second is the type of story the victim provides. Their story may indicate they have no freedom, forced to preform sexual acts and do nothave a stable job. Lastly, emotional behavior such as sign of being scared, depressed and inadequacy to answering questions will give hints to the social worker that something larger is at
The significance of the role of the Operation System (OS) in the overall Information Technology employment sector cannot be undervalued. Indeed, it is hard to talk about technical skill-sets or the practical application of such skill-sets without at least some underlying understanding of their context within a computer operating system environment. From hardware specifications and requirements, user technical support, system administration and security, to software development and system implementation, operating systems are an integral part of the information technology and computing world in all its aspects, and it is difficult to form a concrete demarcation between specialized careers in this industry and the concept of the computer operating system.
Technology continued to prosper in the computer world into the nineteenth century. A major figure during this time is Charles Babbage, designed the idea of the Difference Engine in the year 1820. It was a calculating machine designed to tabulate the results of mathematical functions (Evans, 38). Babbage, however, never completed this invention because he came up with a newer creation in which he named the Analytical Engine. This computer was expected to solve “any mathematical problem” (Triumph, 2). It relied on the punch card input. The machine was never actually finished by Babbage, and today Herman Hollerith has been credited with the fabrication of the punch card tabulating machine.
The fist computer, known as the abacus, was made of wood and parallel wires on which beads were strung. Arithmetic operations were performed when the beads were moved along the wire according to “programming” rules that had to be memorized by the user (Soma, 14). The second earliest computer, invented by Blaise Pascal in 1694, was a “digital calculating machine.” Pascal designed this first known digital computer to help his father, who was a tax collector. Pascal’s computer could only add numbers, and they had to be entered by turning dials (Soma, 32). It required a manual process like its ancestor, the abacus. Automation was introduced in the early 1800’s by a mathematics professor named Charles Babbage. He created an automatic calculation machine that was steam powered and stored up to 1000 50-digit numbers. Unlike its two earliest ancestors, Babbage’s invention was able to perform various operations. It relied on cards with holes punched in them, which are called “punch cards.” These cards carried out the programming and storing operations for the machine. Unluckily, Babbage’s creation flopped due to the lack of mechanical precision and the lack of demand for the product (Soma, 46). The machine could not operate efficiently because technology was t adequate to make the machine operate efficiently Computer interest dwindled for many years, and it wasn’t until the mid-1800’s that people became interested in them once again.