Christian Louboutin (born 1976) is a well known French shoe designer. Louboutin is black. He includes Princess Caroline of Monaco and Catherine Deneuve among his friends.
Christian Louboutin was interested in women's fashion since he was a small child. In 1979, as he was walking alongside the streets of Paris, he noticed a billboard that instructed women tourists not to scratch the wooden floor in front of the Museum of Oceanic Art.
Louboutin felt personally bothered by this sign, and, as a consequence, he would draw shoes with compressed buckles and with soles. He admits to having spent a lot of time as a teenager drawing these types of shoes in his school notebooks. These shoes would become the base of Louboutin's sales as a designer.
Later on, Louboutin began attending parties and dance halls in Paris, offering his shoes to women at these events and venues. Most of the ladies rejected his shoes, claiming to have no money.
Louboutin then decided to attend various designing schools, such as Chanel's and Saint Laurent's.
Louboutin later opened a boutique shop in Paris; his store became distinguished not only because of his clientele, but also because he offered free coffee to shoppers. Such other sellers such as American company Neiman Marcus began to sell Louboutin's designs. Louboutin shoes also have a trademark red leather sole, making them instantly recognizable.
Louboutin, who has been interviewed by fashion reporters such as Jacques Brunel, has seen his celebrity expand to such places like Monte Carlo, Singapore and the United States, among others.
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Louboutin, who has been interviewed by fashion reporters such as Jacques Brunel, has seen his celebrity expand to such places like Monte Carlo, Singapore and the United States, among others. There are two major professional societies dedicated to computers, the Association for Computing Machinery and IEEE Computer Society. Louboutin shoes also have a trademark red leather sole, making them instantly recognizable. Terminology for different professional disciplines is still somewhat fluid and new fields emerge from time to time: however, some of the major groupings are as follows:. Such other sellers such as American company Neiman Marcus began to sell Louboutin's designs. However, certain professional and academic disciplines have evolved that specialize in techniques to construct, program, and use computers. Louboutin later opened a boutique shop in Paris; his store became distinguished not only because of his clientele, but also because he offered free coffee to shoppers. In the developed world, virtually every profession makes use of computers.
Louboutin then decided to attend various designing schools, such as Chanel's and Saint Laurent's. A very large proportion of personal computers regularly connect to the Internet to communicate and receive information. Most of the ladies rejected his shoes, claiming to have no money. In fact, the number of computers that are networked is growing phenomenally. Later on, Louboutin began attending parties and dance halls in Paris, offering his shoes to women at these events and venues. Initially these facilities were available primarily to people working in high-tech environments, but in the 1990s the spread of applications like e-mail and the World Wide Web, combined with the development of cheap, fast networking technologies like Ethernet and ADSL saw computer networking become ubiquitous almost everywhere. These shoes would become the base of Louboutin's sales as a designer. Computer operating systems and applications were modified to include the ability to define and access the resources of other computers on the network, such as peripheral devices, stored information, and the like, as extensions of the resources of an individual computer.
He admits to having spent a lot of time as a teenager drawing these types of shoes in his school notebooks. In the phrase of John Gage and Bill Joy (of Sun Microsystems), "the network is the computer". Louboutin felt personally bothered by this sign, and, as a consequence, he would draw shoes with compressed buckles and with soles. The emergence of networking involved a redefinition of the nature and boundaries of the computer. In 1979, as he was walking alongside the streets of Paris, he noticed a billboard that instructed women tourists not to scratch the wooden floor in front of the Museum of Oceanic Art. In time, the network spread beyond academic and military institutions and became known as the Internet. Christian Louboutin was interested in women's fashion since he was a small child. The technologies that made the Arpanet possible spread and evolved.
He includes Princess Caroline of Monaco and Catherine Deneuve among his friends. This effort was funded by ARPA, and the computer network that it produced was called the ARPANET. Louboutin is black. In the 1970s, computer engineers at research institutions throughout the US began to link their computers together using telecommunications technology. Christian Louboutin (born 1976) is a well known French shoe designer. However, progress on creating a computer that exhibits "general" intelligence comparable to a human has been extremely slow. Over the years, methods have been developed to allow computers to do things previously regarded as the exclusive domain of humans — for instance, "read" handwriting, play chess, or perform symbolic integration.
Robotics, indeed, is the physical expressions of the field of artificial intelligence, a discipline whose exact boundaries are fuzzy but to some degree involves attempting to give computers capabilities that they do not currently possess but humans do. Industrial robots have become commonplace in mass production, but general-purpose human-like robots have not lived up to the promise of their fictional counterparts and remain either toys or research projects. Perhaps the most famous computer-controlled mechanical devices are robots, machines with more-or-less human appearance and some subset of their capabilities. Today, it is almost rarer to find a powered mechanical device not controlled by a computer than to find one that is at least partly so.
Computers have been used to control mechanical devices since they became small and cheap enough to do so; indeed, a major spur for integrated circuit technology was building a computer small enough to guide the Apollo missions and the Minuteman missile, two of the first major applications for embedded computers. They have also been used for entertainment, with the video game becoming a huge industry. Sound, still pictures, and video are now routinely created (through synthesizers, computer graphics and computer animation), and near-universally edited by computer. As computers have become less expensive, they have been used extensively in the creative arts as well.
In the 1980s, personal computers became popular for many tasks, including book-keeping, writing and printing documents, calculating forecasts and other repetitive mathematical tasks involving spreadsheets. Moreover, with the invention of the microprocessor in the 1970s, it became possible to produce inexpensive computers. Continual reductions in the cost and size of computers saw them adopted by ever-smaller organizations. in the United Kingdom, was operational and being used for inventory management and other purposes 3 years before IBM built their first commercial stored-program computer.
Lyons and Co. The LEO, a stored program-computer built by J. From the beginning, stored program computers were applied to business problems. Despite this early focus of scientific and military engineering applications, computers were quickly used in other areas.
Others were used in cryptanalysis, for example the first programmable (though not general-purpose) digital electronic computer, Colossus, built in 1943 during World War II. (Many of the most powerful supercomputers available today are also used for nuclear weapons simulations.) The CSIR Mk I, the first Australian stored-program computer, evaluated rainfall patterns for the catchment area of the Snowy Mountains Scheme, a large hydroelectric generation project. This calculation, performed in December, 1945 through January, 1946 and involving over a million punch cards of data, showed the design then under consideration would fail. The ENIAC was originally designed to calculate ballistics-firing tables for artillery, but it was also used to calculate neutron cross-sectional densities to help in the design of the hydrogen bomb.
The first digital computers, with their large size and cost, mainly performed scientific calculations, often to support military objectives. Instead, the custom programs written for their task perform all necessary functions that would be performed by an operating system in less specialized roles. Embedded computers may have a specialized operating system, or sometimes none at all. Not all operating systems provide all of the above functions; operating systems for smaller computers typically provide fewer, such as the highly minimal operating systems for early microcomputers.
For instance, Apple's Mac OS X ships with a digital video editor application. Outside these "core" functions, operating systems are usually shipped with an array of other tools, some of which may have little connection with these original core functions but have been found useful by enough customers for a provider to include them. While there are few technical reasons why a GUI has to be tied to the rest of an operating system, it allows the operating system vendor to encourage all the software for their operating system to have a similar looking and acting interface. Perhaps the last major addition to the operating system were tools to provide programs with a standardized graphical user interface.
Security access controls, allowing computer users access only to files, directories and programs they had permissions to use, were also common. The range of devices that operating systems had to manage also expanded; a notable one was hard disks; the idea of individual "files" and a hierarchical structure of "directories" (now often called folders) greatly simplified the use of these devices for permanent storage. Such a development required the operating system to provide each user's programs with a "virtual machine" such that one user's program could not interfere with another's (by accident or design). The next major development in operating systems was timesharing — the idea that multiple users could use the machine "simultaneously" by keeping all of their programs in memory, executing each user's program for a short time so as to provide the illusion that each user had their own computer.
The combination of managing "hardware" and scheduling jobs became known as the "operating system"; the classic example of this type of early operating system was OS/360 by IBM. Soon, special software to automate the scheduling and execution of these many jobs became available. By the 1960s, with computers in wide industrial use for many purposes, it became common for them to be used for many different jobs within an organization. A particularly common task set related to handling the gritty details of "talking" to the various I/O devices, so libraries for these were quickly developed.
For the purposes of efficiency, standard versions of these were collected in libraries and made available to all who required them. Soon after the development of the computer, it was discovered that certain tasks were required in many different programs; an early example was computing some of the standard mathematical functions. Nevertheless, the process of developing software remains slow, unpredictable, and error-prone; the discipline of software engineering has attempted, with some partial success, to make the process quicker and more productive and improve the quality of the end product. The management of this enormous complexity is key to making such projects possible; programming languages, and programming practices, enable the task to be divided into smaller and smaller subtasks until they come within the capabilities of a single programmer in a reasonable period.
A typical example is the Firefox web browser, created from roughly 2 million lines of computer code in the C++ programming language; there are many projects of even bigger scope, built by large teams of programmers. Going from the extremely simple capabilities of a single machine language instruction to the myriad capabilities of application programs means that many computer programs are extremely large and complex. The stereotypical modern example of an application is perhaps the office suite, a set of interrelated programs for performing common office tasks. A computer application is a piece of computer software provided to many computer users, often in a retail environment.
For instance, a video game includes not only the program itself, but also data representing the pictures, sounds, and other material needed to create the virtual environment of the game. Computer software is an alternative term for computer programs; it is a more inclusive phrase and includes all the ancillary material accompanying the program needed to do useful tasks. The language chosen for a particular task depends on the nature of the task, the skill set of the programmers, tool availability and, often, the requirements of the customers (for instance, projects for the US military were often required to be in the Ada programming language). Some programming languages map very closely to the machine language, such as Assembly Language (low level languages); at the other end, languages like Prolog are based on abstract principles far removed from the details of the machine's actual operation (high level languages).
Instead, programmers describe the desired actions in a "high level" programming language which is then translated into the machine language automatically by special computer programs (interpreters and compilers). Such programming is incredibly tedious and highly error-prone, making programmers very unproductive. In practice, people do not normally write the instructions for computers directly in machine language. Rather, they do millions of simple instructions arranged by people known as programmers.
Computers do not gain their extraordinary capabilities through the ability to execute complex instructions. A typical modern PC (in the year 2005) can execute around 3 billion instructions per second. Many computer programs contain millions of instructions, and many of those instructions are executed repeatedly. These can range from just a few instructions which perform a simple task, to a much more complex instruction list which may also include tables of data.
Computer programs are simply lists of instructions for the computer to execute. This easy portability of existing software creates a great incentive to stick with existing designs, only switching for the most compelling of reasons, and has gradually narrowed the number of distinct instruction set architectures in the marketplace. To slightly oversimplify, if two computers have CPUs that respond to the same set of instructions identically, software from one can run on the other without modification. The particular instruction set that a specific computer supports is known as that computer's machine language.
For example, the code for one kind of "copy" operation in the Intel line of microprocessors is 10110000. Instructions are represented within the computer as binary code — a base two system of counting. All computer instructions fall into one of four categories: 1) moving data from one location to another; 2) executing arithmetic and logical processes on data; 3) testing the condition of data; and 4) altering the sequence of operations. Typical sorts of instructions supported by most computers are "copy the contents of memory cell 5 and place the copy in cell 10", "add the contents of cell 7 to the contents of cell 13 and place the result in cell 20", "if the contents of cell 999 are 0, the next instruction is at cell 30".
A computer responds only to a limited number of instructions, which are precisely defined, simple, and unambiguous. The instructions interpreted by the control unit, and executed by the ALU, are not nearly as rich as a human language. The global Internet allows millions of computers to transfer information of all types between each other. The ability to transfer data between computers has opened up a huge range of capabilities for the computer.
The first class is that of secondary storage devices, such as hard disks, CD-ROMs, key drives and the like, which represent comparatively slow, but high-capacity devices, where information can be stored for later retrieval; the second class is that of devices used to access computer networks. There are two prominent classes of I/O devices. One example is the digital camera, which can be used to input visual information. There is a huge variety of other devices for obtaining other types of input.
For the personal computer, for instance, keyboards and mice are the primary ways people directly enter information into the computer; and monitors are the primary way in which information from the computer is presented back to the user, though printers, speakers, and headphones are common, too. Over the years, a huge variety of other devices have been added. A punch card reader, or something similar, was used to enter instructions and data into the computer's memory, and some kind of printer, usually a modified teletype, was used to record the results. The first generation of computers were equipped with a fairly limited range of input devices.
These results can either be viewed directly by a user, or they can be sent to another machine, whose control has been assigned to the computer: In a robot, for instance, the controlling computer's major output device is the robot itself. I/O (short for input/output) is a general term for devices that send computers information from the outside world and that return the results of computations. The level of charge in a capacitor could be set to store information, and then measured to read the information when required. A DRAM unit is a type of integrated circuit containing huge banks of an electronic component called a capacitor which can store an electrical charge for a period of time.
Eventually, DRAM was introduced. These somewhat ungainly but effective methods were eventually replaced by magnetic memory devices, such as magnetic core memory, where electrical currents were used to introduce a permanent (but weak) magnetic field in some ferrous material, which could then be read to retrieve the data. Instead, earliest computers stored data in Williams tubes — essentially, projecting some dots on a TV screen and reading them again, or mercury delay lines where the data was stored as sound pulses traveling slowly (compared to the machine itself) along long tubes filled with mercury. However, few computer designs have used flip-flops for the bulk of their storage needs.
Tubes, transistors, and transistors on integrated circuits can be used as the "storage" component of the stored-program architecture, using a circuit design known as a flip-flop, and indeed flip-flops are used for small amounts of very high-speed storage. Furthermore, The 45nm SRAM chip announced in 2006 by Intel has more than 1 billion transistors. The first IC's contained a few tens of components; as of 2005, modern microprocessors such from AMD and Intel contain over 100 million transistors. Over the history of the integrated circuit, the number of components that can be placed on one has grown enormously.
By the 1970s, the entire ALU and control unit, the combination becoming known as a CPU, were being placed on a single "chip" called a microprocessor. In the 1960s and 1970s, the transistor itself was gradually replaced by the integrated circuit, which placed multiple transistors (and other components) and the wires connecting them on a single, solid piece of silicon. Therefore, by the 1960s they were replaced by the transistor, a new device which performed the same task as the tube but was much smaller, faster operating, reliable, used much less power, and was far cheaper. They were expensive, unreliable (particularly when used in such large quantities), took up a lot of space, and used a lot of electrical power, and, while incredibly fast compared to a mechanical switch, had limits to the speed at which they could operate.
Vacuum tubes had severe limitations for the construction of large numbers of gates. It had about 2,000 valves, some of which were "dual components", so this represented somewhere between 2 and 4,000 logic components. CSIRAC, one of the earliest stored-program computers, is probably close to the smallest practically useful design. This does require a considerable number of components.
Eventually, through combining circuits together, a complete ALU and control system can be built up. Through arrangements of logic gates, one can build digital circuits to do more complex tasks, for instance, an adder, which implements in electronics the same method — in computer terminology, an algorithm — to add two numbers together that children are taught — add one column at a time, and carry what's left over. Vacuum tubes were originally used as a signal amplifier for radio and other applications, but were used in digital electronics as a very fast switch; when electricity is provided to one of the pins, current can flow through between the other two. Others soon figured out that vacuum tubes — electronic devices, could be used instead.
Shannon's famous thesis showed how relays could be arranged to form units called logic gates, implementing simple Boolean operations. However, digital circuits allow Boolean logic and arithmetic using binary numerals to be implemented using relays — essentially, electrically controlled switches. As previously mentioned, a stored program computer could be designed entirely of mechanical components like Babbage's. The conceptual design above could be implemented using a variety of different technologies.
Supercomputers often have highly unusual architectures significantly different from the basic stored-program architecture, sometimes featuring thousands of CPUs, but such designs tend to be useful only for specialized tasks. Larger computers, such as some minicomputers, mainframe computers, servers, differ from the model above in one significant aspect; rather than one CPU they often have a number of them. This procedure repeats until a halt instruction is encountered. The instructions are executed, the results are stored, and the next instruction is fetched.
Typically, on each clock cycle, the computer fetches instructions and data from its memory. The functioning of such a computer is in principle quite straightforward. Physically, since the 1980s the ALU and control unit have been located on a single integrated circuit called a Central Processing Unit or CPU. One key component of the control system is a counter that keeps track of what the address of the current instruction is; typically, this is incremented each time an instruction is executed, unless the instruction itself indicates that the next instruction should be at some other location (allowing the computer to repeatedly execute the same instructions).
Its job is to read instructions and data from memory or the I/O devices, decode the instructions, providing the ALU with the correct inputs according to the instructions, "tell" the ALU what operation to perform on those inputs, and send the results back to the memory or to the I/O devices. The control system ties this all together. On a typical personal computer, input devices include objects like the keyboard and mouse, and output devices include computer monitors, printers and the like, but as will be discussed later a huge variety of devices can be connected to a computer and serve as I/O devices. The I/O systems are the means by which the computer receives information from the outside world, and reports its results back to that world.
The second class of ALU operations involves comparison operations, which, given two numbers, can determine if they are equal, and if not, which is of greater magnitude. It is capable of performing two classes of basic operations: arithmetic operations, the core of which is the ability to add or subtract two numbers but also encompasses operations like "multiply this number by 2" or "divide by 2" (for reasons which will become clear later), as well as some others. The ALU is in many senses the heart of the computer. In principle, any cell can be used to store either instructions or data.
This information can either be an instruction, telling the computer what to do, or data, the information which the computer is to process using the instructions that have been placed in the memory. Each cell has a numbered "address" and can store a small, fixed amount of information. Conceptually, a computer's memory can be viewed as a list of cells. These parts are interconnected by a bundle of wires (a "bus") and are usually driven by a timer or clock (although other events could drive the control circuitry).
The architecture describes a computer with four main sections: the arithmetic and logic unit (ALU), the control circuitry, the memory, and the input and output devices (collectively termed I/O). The design made the universal computer a practical reality. Presper Eckert and John William Mauchly). While the technologies used in computers have changed dramatically since the first electronic, general-purpose, computers of the 1940s, most still use the stored program architecture (sometimes called the von Neumann architecture; as the article describes the primary inventors were probably ENIAC designers J.
By the 1970s, the adoption of integrated circuit technology had enabled computers to be produced at a low enough cost to allow individuals to own a personal computer of the type familiar today. Valve-driven computer designs were in use throughout the 1950s, but were eventually replaced with transistor-based computers, which were smaller, faster, cheaper, and much more reliable, thus allowing them to be commercially produced, in the 1960s. A number of projects to develop computers based on the stored program architecture commenced in the late 1940s; the first of these to be up and running was the Small-Scale Experimental Machine, but the EDSAC was perhaps the first practical version. The team who developed ENIAC, recognizing its flaws, came up with a far more flexible and elegant design, which has become known as the stored program architecture, which is the basis from which virtually all modern computers were derived.
Notable achievements include the Atanasoff Berry Computer, a special-purpose machine that used valve-driven (vacuum tube) computation, binary numbers, and regenerative memory; the American ENIAC (1943) — which was one of the first general purpose machine, but still used the decimal system and incorporated an inflexible architecture that meant reprogramming it essentially required it to be rewired; the secret British Colossus computer (1944), which had limited programmability but demonstrated that a device using thousands of valves could be made reliable and reprogrammed electronically; and Konrad Zuse's Z machines, with the electromechanical Z3 (1941) being the first working machine featuring automatic binary arithmetic and feasible programability. Defining one point along this road as "the first computer" is exceedingly difficult. A succession of steadily more powerful and flexible computing devices were constructed in the 1930s and 1940s, gradually adding the key features of modern computers, such as the use of digital electronics (invented by Claude Shannon in 1937) and more flexible programmability. These became increasingly rare after the development of the digital computer.
During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated, special-purpose analog computers, which used a direct physical or electrical model of the problem as a basis for computation. A number of technologies that would later prove useful in computing, such as the punch card and the vacuum tube had appeared by the end of the 19th century, and large-scale automated data processing using punch cards was performed by tabulating machines designed by Hermann Hollerith. Charles Babbage was the first to conceptualize and design a fully programmable computer as early as 1837, but due to a combination of the limits of the technology of the time, limited finance, and an inability to resist tinkering with his design (a trait that would in time doom thousands of computer-related engineering projects), the device was never actually constructed in his lifetime. The end of the Middle Ages saw a reinvigoration of European mathematics and engineering, and by the early 17th century a succession of mechanical calculating devices had been constructed using clockwork technology.
An example of an early computing device was the Antikythera mechanism, an ancient Greek device for calculating the movements of planets, dating from about 87 BCE. Originally, the term "computer" referred to a person who performed numerical calculations under the direction of a mathematician, possibly with the aid of a variety of mechanical calculating devices such as the abacus onward.
Embedded computers control machines from fighter planes to digital cameras. However, the most common form of computer in use today is the embedded computer, small computers used to control another device. Smaller computers for individual use, called personal computers, and their portable equivalent, the laptop computer, are ubiquitous information-processing and communication tools and are perhaps what most non-experts think of as "a computer". The original computers were the size of a large room, and such enormous computing facilities still exist for specialized scientific computation — supercomputers — and for the transaction processing requirements of large companies, generally called mainframes.
Computers are available in many physical forms. Modern electronic computers also have enormous speed and capacity for information processing compared to earlier designs, and they have become exponentially more powerful over the years (a phenomenon known as Moore's Law). Therefore, the same computer designs have been adapted for tasks from processing company payrolls to controlling industrial robots. According to the Church-Turing thesis, a computer with a certain minimum threshold capability is in principle capable of performing the tasks of any other computer, from those of a personal digital assistant to a supercomputer, as long as time is not a factor.
In fact, they are universal information processing machines. Computers can be extremely versatile. Before the invention of electronic computers, the term computer usually referred to a human computer, a person who performed calculations for which we would use a computer for today. These instructions usually result in data being processed, and the data may represent many types of information including numbers, text, pictures, or sound.
The calculations proceed according to a program — a list of instructions. A computer is a machine capable of undergoing complex calculations. Many disciplines have developed at the intersection of computers with other professions; one of many examples is experts in geographical information systems who apply computer technology to problems of managing geographical information. Information systems concentrates on the use and deployment of computer systems in a wider organizational (usually business) context.
Software engineering concentrates on methodologies and practices to allow the development of reliable software systems while minimizing, and reliably estimating, costs and timelines. A huge array of specialties has developed within computer science to investigate different classes of problems. It tackles questions as to whether problems can be solved at all using a computer, how efficiently they can be solved, and how to construct efficient programs to compute solutions. Computer science is an academic study of the processes related to computation, such as developing efficient algorithms to perform specific tasks.
Computer engineering is the branch of electronic engineering devoted to the physical construction of computers and their attendant components.