Brief History of Computer by Ajiboye Daud

LITERATURE REVIEW OF COMPUTER HARDWARE Computers have evolved from the fundamental principles of mathematical calculation and language processing. The computing systems of today are an outcome of the efforts and intellect of mathematicians, logicians, linguists and technologists from all over the world. Computer history comprises the evolutionary journey of computing systems, the timeline of operating systems as well as the history behind the development of a wide variety of computer software and hardware. Bellow is the computer history in brief and the evolution of computers. How did the different types of computers evolve? Here is a brief overview of the progress of computing technology from calculators of the 18th century right up to the modern-day digital portable computers. Year| Technology Used| Before 1801| Calculators were the earliest computing devices. They were the only computation tools for long years before the creation of computers. | 1801| The years that followed were dominated by the use of punched cards for computing. The users used to submit programming assignments to a computer centre using stacks of cards. The programs used to be queued for processing and execution. | 1930 – 1960| Desktop mechanical calculators were built during the 1930s. During the 1950s and the '60s, electronic desktop calculators came up. Analog computational technologies predominated this period. | 1940 – 1960| This span of time witnessed the emergence of the digital computing technology. Zuse Z3, ENIAC and EDSAC were some of the early digital computers. * First-generation computers were based on the von Neumann architecture. * The second generation computers were characterized by the replacement of vacuum tube by bipolar transistors. They were composed of printed circuit boards. | After 1960| These years witnessed the development of the third generation computers. They were based on integrated circuits. Computer systems of this period had large storage capacities and high processing powers. Multi-core CPUs became available in the 21st century. Laptops, palmtops, handheld PCs, notebook computers and tablet PCs are popular today. Computer development still continues. | Let us now look at the history and timeline of computing systems. Before moving ahead, it will be interesting to know when was the first computer made! Year| Event| 2400 BC| Abacus, the first known calculator was invented in Babylonia. It was a major step towards the era of computing that was to follow. 500 BC| Panini, an ancient Indian Sanskrit grammarian came up with the predecessor of the modern formal language theory. | 300 BC| Pingala invented the binary number system that serves as the foundation of computing systems the world over. | 1614| John Napier designed the system of movable rods, which used algorithms to perform the basic mathematical operations. | 1622| William Oug htred invented slide rules. | 1822| Charles Babbage devised the first mechanical computer. | 1937| John V. Atanasoff devised the first digital electronic computer| 1939| Atanasoff and Clifford Berry came up with the ABC prototype. 1941| The electromechanical Z machines by Konrad Zuse proved being an important step in the evolution of computers. | 1943| Colossus, which was able to decode German messages, was designed at Bletchley Park in Britain. | 1944| Harvard Mark I, a computer with lesser programmability was designed. | 1945| John von Neumann described a stored program architecture, for the first time ever. This architecture was the heart of the computer systems developed thereafter. This architecture, which came to be known as the von Neumann architecture is a part of every computer till today. 1946| The Ballistics Research Laboratory of the United States came up with the Electronic Numerical Integrator and Computer (ENIAC). It was the first general purpose electronic computer; but had an inflexible architecture. | 1950| The US National Bureau of Standards came up with the Standards Electronic/Eastern Automatic Computer (SEAC). It was the first computer using diodes for handling logic. | 1951| Lynos Electronic Office (LEO), the first business computer was developed by John Simmons and T. Raymond Thompson. UNIVAC I, the first commercial computer was designed in the United States by John Presper Eckert and John W. Mauchly. EDVAC, the electronic discrete variable automatic computer was introduced. | 1955| Bell Labs introduced its first transistor computer. Transistors made computers energy-efficient. | 1958| Advanced Research Projects Agency (ARPA) was formed. This year also witnessed the making of the first silicon chip by Jack Kilby and Robert Noyce. | 1968| DEC launched the first mini computer known as PDP-8| 1969| The US Department of Defense founded the Advanced Research Projects Agency Network (ARPANET). It was established with intent to develop a computer network and is the predecessor of the Internet. 1971| Microcomputers came up with microprocessors and Ted Hoff at Intel, introduced 4-bit 4004. | 1972| This year witnessed the creation of 8080 microprocessors by Intel. | 1973| A minicomputer that was called Xerox Alto was developed during this year. It was an important milestone in the development of personal computers. | 1974| Researchers at the Xerox Palo Alto Research Center came up with Alto, which was the first workstation with an inbuilt mouse. It had a fair amount of storage capacity and offered menus and icons. It could also connect to a network. 1975| Altair came up with the first portable computer. The foundation of the present-day relationship between portability and computing was laid way back in 1975! Tandem computers, the first computers with online transaction processing capacities were born during this period. | 1979| By 1979, more than half a million computers were in use in the United States. This number crossed 10 million by 1983. | 1981| The American National Standards Institute (ANSI) was founded. It was during the same year that the first 32-bit chip was introduced by Hewlett-Packard. | 1982| Intel announced the 80286 processor. 1983| In this year, the Time magazine nominated personal computer for the title ‘machine of the year'. | 1985| Intel introduced the 80386 processor that consists of a 16MHz processor. | 1990| The World Wide Web was born. Tim Berners-Lee, a researcher at CERN, developed HTML. He came up with specifications such as URL and HTTP. He based the World Wide Web on enquiry-based system that used hypertext and enabled people to collaborate over a network. His first web server and browser became available to the public. | Till date| The development of newer versions of computer systems continues. | An operating system is that software component of a computer system, which deals with the management of the different computer processes and the sharing of computer resources. It hosts computer applications and handles computer hardware. Take a look at the major events in the history of operating systems. Before going ahead, you might like to take a quick look at the different types of operating systems. Year| Event| 1954| MIT came up with their operating system for UNIVAC 1103. | 1964| Dartmouth timesharing operating system was developed. | 1965| Multics was announced. However, it was opened for paying customers in October 1969. 1966| DOS/360 of IBM came up. | 1969| This year witnessed the development of the Unix operating system by AT;T. | 1976| CP/M was developed during this year. | 1980| OS-9 came up in 1980. | 1981| This year can be considered fortunate to have witnessed the development of MS-DOS. IBM had hired Paul Allen and Bill Gates to create an operating system in 1980. The y used the operating system manufactured by the Seattle Computer Products as a template to develop DOS. | 1984| Macintosh operating system came up in this year. | 1987| It was during this year that MINIX, BSD2000 and OS/2 were developed. 1988| RISC iX, LynxOS and Macintosh OS (System 6) came up during this year. | 1989| This was the time when the RISC operating system was developed. | 1991| It was in 1991 that Linux came up. It is a Unix-like operating system, which is a free software. It was during this year that Minix 1. 5 was developed and Macintosh came up with System 7. | 1992| Solaris, the successor of Sun OS 4. X came up during this year. | 1993| Plan 9, FreeBSD, NetBSD and Windows NT 3. 1 came up during 1993. | 1995| OpenBSD and Microsoft Windows 95 came up during 1995 | 1996| Windows NT 4. 0 hit the computing market in 1996. | 998| 1998 witnessed the release of Windows 98 as well of Solaris 7. | 2000| Windows 2000, which hit the markets in 2000, was the first Windows server operating system to drop the ‘NT' suffixed to its name. Windows ME, which was sold during this year, was the last operating system in the Windows 9x line. Red Hat Linux 6. 2E also came up during 2000. | 2001| Windows XP was launched and soon gained a wide popularity. Windows XP 64-bit edition followed in 2002. | 2002| Windows XP Service Pack 1 was released in 2002. | 2003| 2003 witnessed the launch of the Windows 2003 Server as also the release of Red Hat Enterprise Linux 3. 2004| Windows XP Service Pack 2 was released in 2004. | 2006| Windows Vista hit the markets| 2008| Windows Vista Service Pack 1 and Windows Server 2008 came up in 2008. It was also during this very year that Windows XP Service Pack 3 was released. | Computers have always been the most efficient computational devices. They have high processing powers and are able to run and execute large programs. Programming languages serve as the means to write programs on computer systems. Thus, it is important to look at the timeline of the development of some of the major programming languages. Following is an overview of the important events in the history of computer languages. Year| Programming Language Developed| Before 1950| The ENIAC coding system was primarily used in computing| 1954-54| Fortran â€Å"0† was designed by a team at IBM. Fortran Implementation was developed by John Backus at IBM in 1957. | 1956-58| John McCarthy came up with the concept of LISP. | 1959| COBOL concept came up followed by its implementation that was developed by the Codasyl Committee in 1960. The LISP implementation was developed in 1959. LISP's successor, Common LISP, came up later in 1984. 1964| IBM came up with PL/I concept. PL/M followed years later in 1972. 1964 also saw the development of BASIC by Kemeny and Kurtz. | 1969| Ken Thompson developed the B language. | 1970| This was when Pascal was developed. | 1972| It was during 1972 that Smalltalk and Prolog were developed. One of the most important events in the history of computing was the development of C language. It was de veloped by Dennis Ritchie in 1972. | 1975| Scheme, the successor of LISP came up in 1975 as also Modula, the successor of Pascal. | 1978| SQL was developed at IBM in 1978. | 1979| REXX and AWK came up in 1979. 1980-83| C with classes was developed in 1980. Objective-C came up in 1982. 1983 witnessed the development of C++, one of the very popular languages till date. | 1985| PostScript and Object Pascal belong to 1985. | 1987| Perl that derives some of its features from C, as also from AWK, sed and sh evolved in 1987. | 1991| Van Rossum came up with Python. Visual Basic, developed by Alan Cooper, came up in the same year. | 1993| Ruby, which is considered a successor of Smalltalk and Perl, came up in 1993. | 1994| PHP was born in 1994. | 1995| ColdFusion belongs to 1995. It was during this year that James Gosling at Sun Microsystems came up with Java. | 1996| Javascript was born in this year. ECMAScript, its successor came up in 1997. | 1999| XSLT, a language based on XML by the W3C and the Game Maker Language by Mark Overmars were born in 1999. | 2000| The D language and C# came up in 2000. | 2006| The development of Windows PowerShell by Microsoft was one of the significant events in computing that took place in 2006. | Looking at the speedily advancing computing technology, we can surely say that the future of computers is going to be as glorious as their history.

FAS essays

FAS essays On any given day in the United States... 10,657 babies are born. (US Census Bureau). Twenty of these babies are born with Fetal Alcohol Syndrome. Twenty may seem as though it is not a lot, but when you compare it to the fact that this number is more than HIV positive, Muscular Dystrophy, Spina Bifida and Down Syndrome combine it creates a whole new parameter. Fetal Alcohol Syndrome is a direct result of a womans competed disregard for the fetus. Fetal Alcohol Syndrome (FAS, hereinafter), is a series of both mental and physical birth defects that can include, but are not limited to, mental retardation, deficiencies in growth, central nervous system dysfunction, behavioral maladjustments, and craniofacial abnormalities. It is common knowledge not to smoke or drink during pregnancy. Growth abnormalities can be significant and also includes all three of the following respects of growth: weight, length and head circumference. Most of the time the babys growth abnormalities are so severe they need to be hospitalized because of obvious failure to survive. A baby with craniofacial abnormalities can be recognized by their eyes in that they are small with exaggerated inner epicanthic folds. (Health Visitor Nov. 1981) The bridge of the nose is normally poorly developed. The ears are often large and simple in form. (Midwives Chronicle and Nursing notes) At first, when the baby is delivered, the affected infant shows signs of alcohol withdrawal; with signs that are much similar to delirium tremens in adults. They are often anxious, have a weak grasp, poor hand-to-eye coordination and consistent difficulty in feeding and sucking. People can not blame the mothers for the most part though. It is a common ignorance among the health care providers. Most health care providers are untrained and unfamiliar with substance abuse issues among pregnant women. FAS is widely misdiagnosed and or under diagnosed...

Investigative Essay Essays

Investigative Essay Essays Investigative Essay Essay Investigative Essay Essay Essay Topic: Investigative Warren T. Williams Professor Michael Briere FAS-201 Introduction to Humanities I 4 December 2013 Investigative Essay This investigative essay is a draft copy of the two selection of visual arts from the Classical and the Renaissance period. The two art works are: (1) the Cathedral of Reims an architectural work and (2) The Sculpture of Slavery in Zanzibar. Both selection represents fine art work from two different time periods. The Cathedral of Reims Cathedral of Reims, also called the Cathedral of Notre-Dame at Reims. The cathedral ocated in the city of Reims, France, on the Vesle River east-northeast of Paris. The Cathedral of Reims was the site of the coronation of French kings. It was the center of an important cathedral complex and the representation of Heavenly Jerusalem for the people of the Middle Ages. It was also the symbolic center of the Archbishops power, as Primate over the bishops of several dioceses in Northern France. Erected between 1211 and 1516, in accordance with an architectural program of immense artistic richness, the Cathedral of Reims survives as one of the most beautiful xamples of Gothic art. This unity is emphasized by the use of nearly identical window types in the aisle and clerestory stories, as well as the complementary rose windows in the west facade and central portal and those in the transepts facades. Reims is richly decorated with elegant masonry sculpture (particularly the exterior) and exceptional stained-glass windows, making it one of the artistic masterpieces of the French High Gothic period. I think the Reims Cathedral is a great architectural structure because of the many types of art work display on the exterior walls of this athedral that really draw my interest on this building an elegant designs. The Sculpture of Slavery in Zanzibar The Sculpture of the chained slaves represents the long dark history of Zanzibar. During the 18th and 19th centuries, Zanzibar also called Stone Town was one of the largest slave ports. The slavers hacked their way from Bagamoyo on the Tanzania mainland coast into the African interior, as far west as the Congo. The slavers traded, bribed chiefs, pillaged and frequently kidnapped to meet the high demand for slaves. Those who survived were put into plantations, or were sold to European and American merchants, and shipped in appalling conditions to the Americas and the Caribbean. The statues represent the fact that the slaves were chained together and forced to carry ivory to the coast. Some of the contrasts that the sculpture of the chained slaves represent the wrong doing of people who were not of the white race and represents how much profit slavery in Zanzibar was during that time period. I was drawn to the statues of the chained slaves in Zanzibar, because my family history may have African slave who was shipped to American. I want to find out more about the piece because it gave me ore sense of what happened in the 17th and 18 centuries period. I actually want to learn more about this time period, because I am working on a family history project, trying to trace back my family history. References britannica. com/EBchecked/topic/49651 5/Reims-Cathedral http:// www. reims-cathedral. culture. fr/history. html www. zanzibarpackage. com/slavery-zanzibar www. zanzibar. net Abstract (if your paper requires an Abstract) [Start abstract here] [Start typing paper here] References (if you have references) [Start typing references here]

How to Follow Up After a Job Interview

How to Follow Up After a Job Interview If you think a job interview truly ends with the firm handshake and â€Å"we’ll be in touch† at the end, think again. You still have one more crucial step: the thank you note to everyone who interviewed you. Not only is it a nice touch, it can  be seen as an essential one to the hiring manager you just left. They may be secretly testing your follow-up skills. And even if they’re not, it’s better to send a note right away (the same day!) so you don’t have to think about it again. Here is a sample thank you note you can use to craft your own.SEE ALSO:  4 Google Searches to Boost Interview SuccessPart 1: The OpenerThis part is crucial because you don’t want to be too formal or too casual. â€Å"Dear Sir or Madam† is too formal and can feel off-putting and generic to someone you just met and (ideally) clicked with. â€Å"Dear [person]† or â€Å"Hello [person]† work well as your opening greeting.Part 2: The Thank YouKeep i t simple. There’s no need to go into lines of flowery prose about how your one-hour interview changed your life and how you will never, ever forget the interviewer as long as you live. The basic declarative statement works here as your first point: â€Å"Thank you for taking the time to interview me today.†Part 3: The CallbackAfter the initial thank you, it’s good to offer some specific points from the interview itself, so your note doesn’t feel like a generic template where you just plugged in a new name at the top. â€Å"I especially enjoyed talking about the company’s perspective on clowns. I look forward to hearing more about the clown outreach program.†Part 4: The Self PlugFind a way to re-emphasize how you would be a good fit for the role. â€Å"As we discussed, due to my extensive experience with rodeos, I’m excited about the prospect of finding new and more effective ways to manage the clown performances.†Part 5: The Fu tureHere’s where you show the interviewer that you’re looking ahead to the next part, but also that you’re willing to keep a dialogue open. Definitely include that you’re looking forward to hearing from them, but also offer any additional information they may need. â€Å"If there’s any other information I can provide to help you make your decision, please don’t hesitate to let me know. I can be reached by email (firstname.lastname@respectablemailclient.com) anytime.†Part 6: The CloserAfter that, you’re on to the easiest part: the closing greeting. Don’t go flowery or personal. No â€Å"Forever yours,† or â€Å"With greatest thanks.† Just a straightforward, friendly â€Å"Best wishes,† or â€Å"Thanks again† will do. And even if you found yourself in a joking kind of banter with the interviewer, resist the urge to go overly casual. You may have hit it off, but they’re not your friends (y et)- they’re the people evaluating your professional skills and behavior.Breezy and professional are the way to go in the thank you note. It’s not the time to rehash the entire interview or go over 43 bullet points you didn’t manage to cover in person. And the most important factor of all: speed. Standard archaic dating rules don’t apply here: you don’t wait for the other person to call first, and you don’t wait three days for a reply. Write an email the same day- or even right after you leave the appointment. Again, your promptness will likely be noted, and it means you won’t have this lingering on your to-do list.If the interview was very formal or you got a formal vibe from the interviewer, consider following up with a brief thank-you card via snail mail, as well. Manners are always a welcome part of a professional package, and your awesome communication/follow-up skills could make all the difference.

Great Captains Essay Example | Topics and Well Written Essays - 1000 words

Great Captains - Essay Example A number of individuals from many walks of life find it quite fascinating to study war strategy over the past several thousand years and how the same strategies have been employed, despite the fact that warfare has changed dramatically overtime. Being that warfare has changed over the past one hundred fifty years, the study of captains, such as Napoleon, Ulysses Grant, and Frederick the Great are still valid for a modern military professional, as it is these three individuals who have contributed largely in shaping our civilization and making it what it is today. One reason that the study of captains, such as Napoleon, Ulysses Grant, and Frederick the Great are still valid for a modern military professional is that a military professional can learn a great deal from these individuals. For instance, from the study of these great individuals, a modern military professional can learn to be an effective leader. The modern military can study the art of war from all three of these great captains and possibly employ some of these strategies in today's modern war fair. Some may challenge that learning the strategies of these captains is useless for a modern military professional, since war fair has changed so much since these men were alive. Those supporting this argument state that the weapons during the time of these captains were not as sophisticated as they are today, and wars are fought on a much larger scale than in times past. These captains did not deal with the challenges that we do now. Though these arguments are true and valid, the reason s for engaging in war are the same as they were since the beginning of humankind, and because of this, the study of such captains is relevant, as such study helps the future leader in deciding what he should and should not do to see to it that his outcomes are successful. If these three captains have employed a particular strategy that brought them a plethora of success, then there is no problem at all making use of that same strategy today. In regards to this, Paret and Clausewitz state that the purpose of war has always stayed the same, even though we now use more sophisticated weapons. Not to mention, the tactic to attack the enemy with the utmost force, to concentrate on what allows the enemy to resist and do away with it so the enemy can resist no longer and the desire to annihilate the enemy has been the same. Furthermore, the definition of war has also stayed the same, as war is merely a way for us to force the enemy to do our will and see to it that it is carried out (Chapte r One, Book One). Another reason that the study of these great captains is valid for a modern military professional is that a great deal can be learned from their use of intelligence. On the subject of intelligence as it pertains to war, Paret and Clausewitz state that those who are savages normally fight solely motivated by passion. There is no real intelligence on their part, as they are going to do whatever it takes to destroy their enemy. On the other hand, civilized peoples actually take the time out to sit and strategize how they will attack their enemy, defeat them, and successfully conquer them, if conquering is part of the reason that the war is being fought (Chapter One, Book One). These three great captains, no doubt, took the time to intelligently strategize how they would advance upon their enemies. Surely, they did feel some passion of hatred for their enemy, hence the reason they would attack them in the first place, as one would not attack someone they

Philosophy and everyday life are fundamentally incompatible Essay

Philosophy and everyday life are fundamentally incompatible - Essay Example Sometimes, philosophy and everyday life becomes incompatible while at other times, the two become compatible; it is a matter of fortune. Philosophy and everyday life cannot be considered as fundamentally incompatible always. Philosophy takes birth from the past experiences of life. People reflect on their past experiences in order to realize their mistakes and identify ways in which they can be avoided in the future. The principles thus learned make the philosophy of life. It is said that wise people are those who learn from others’ mistakes. This education works fundamentally because the golden principles apply to all kinds of situations. â€Å"It is quite often said that, 'Philosophy and Education are two sides of the same coin'. 'Education is the dynamic side of philosophy'† (Sharma, 2012). Sometimes philosophy and everyday life becomes fundamentally incompatible because of the unpredictability of life. ... Another way in which the philosophy and life are not only fundamentally compatible but also integrally related to each other is the religious beliefs and their impact on life. â€Å"There seems to be some confusion at times over just whether and how religion and philosophy should be distinguished from each other — this confusion is not unjustified because there are some very strong similarities between the two† (Cline, 2012). The philosophy is ingrained in the religious beliefs. Every religion provides a certain set of rules and principles that its followers are obliged to follow. These rules require the individual to deal with the challenges of life with the philosophy proposed by the religion. For example, Muslims have the philosophy that whatever happens in life happens with due willingness and approval of God Almighty. â€Å"[T]he business of philosophy is nothing other than to look into creation and to ponder over it in order to be guided to the Creator -- in othe r words, to look into the meaning of existence† (Halsall, 1998). This principle extends to include every experience of life irrespective of its level of complexity and nature. Application of this philosophy helps Muslims avoid the negative influences of the challenges of life. For example, a man whose newborn baby dies does not mourn the loss to the extent that he might lose his senses because the belief that the loss occurred because of God’s willingness lends the man the patience he requires to come over the grief. Likewise, when a Muslim wins a race, he believes that he won it fundamentally because God willed it, and thus does not show off to others. These principles guide human behavior in a way that one finds a way to deal with the challenges of

Team Project Experience Essay Example | Topics and Well Written Essays - 750 words

Team Project Experience - Essay Example This role offered me an opportunity to explore and exercise my leadership skills. The role gave me a chance to take part in the project from the time the project was set up to the end. Usually, these duties begin in the second stage of the project but I got an opportunity to participate from the beginning as a member of the team that floated the first ideas for the project. Through this, I understood the project in full. The advantage that came with taking this responsibility is that as a member of the team I got the chance to participate in the project from start to finish. A holder of this position drove the project from the implementation stage to completion. My duties during project implementation included among others preparation of the project management plan that began with stage three (Chermack 2011). Risk assessment in addition to planning the mitigation aspects were my roles that I performed well during the process. These functions fell under my overall jurisdiction of lead ing the project team to achieve set objectives following through set targets at every stage. The responsibility was also enthusiastic, as I made sure that team members comprehended their assigned responsibilities. As an evaluation aspect, the manager monitored performance against the original plan. This helped in eliminating leakages and shielding the project from slipping out of the original plan. ... Good communication skills supplemented this strength. This happened in an honest and clear manner while maintaining respect among all team members. A good team player is a good listener, this aided in the effective functioning of the team (Tuckman and Jensen 1977). Coordination was product of good communication that included open and clear communication channels. I injected this personality into the team and it effectively helped the efficiency of working as a team. Among other strengths, I was flexible and this was important for a team member as the team often worked under changing conditions. Personal professional qualities Team projects run on deliverables and deadlines. Professional qualities that I brought into the team for the role-played included the element of cohesiveness that augmented the skills and other qualities possessed by other members. I acquired these skills in extra weekend classes offered at the extra mural studies centre. As a member of the team who preferred th e role of a project manager, I demonstrated leadership qualities in the team and this was crucial in underlying the essence of cohesiveness. Experience showed that the effectiveness of this quality served well for the team as members enjoyed good communication and sound conflict resolution mechanisms. As a project manager, I initiated the strength deployment inventory (SDI) that raised the need for the team to work together cohesively. It also offered opportunities for team members to draft successful working relationships (Nagarajan 2005). Through this, members of the project team learnt motivational areas of their colleagues. This knowledge enhanced the alignment of the members to the project goals. Clear understanding of project roles and awareness of skills of team