Function and Application In Medical Field
The first use of the word “computer” was recorded in 1613 in a book called “The yong mans gleanings” by English writer Richard Braithwait. It referred to a person who carried out calculations, or computations, and the word continued with the same meaning until the middle of the 20th century. From the end of the 19th century the word began to take on its more familiar meaning, a machine that carries out computations Basically, computer is an electronic device that can be programmed to carry out a set of arithmetic or logical operations automatically. Modern computer can solve more than one kind of problem. Typically, a computer consists of a central processing unit (CPU), and memory. The processing element carries out arithmetic and logic operations, and a sequencing (ALU) and control unit can change the order of operations in response to stored information (CU). Peripheral devices allow information to be retrieved from an external source, and the result of operations saved and retrieved. Originally, computer is used to help simple calculation but development in technology rocketed the usage of computers to conduct multiple complicated tasks.In the early age, computer were the size of a large room, consuming as much power as several hundred modern personal computers. Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into mobile devices, and mobile computers can be powered by small batteries Nowadays, computers are vital every fields. It helps to ease the tasks by doing complicated calculation. For example in military field, computers are used in specialized military application such as decoding military codes, enemy detection and ballistic calculations. In medical field, computer help to improve the health of people by monitor the health of the patients and analyzed the condition of ones.
First account of the computer is proposed by Charles Babbage. Babbage had a vision of mechanical numbers and tables. In the early 19th century, he invented the first mechanical computer designed to help in navigational calculation. In 1833, he realized that a much more general design, an Analytical Engine. The Engine incorporated an arithmetic logic unit (digital circuit that performs integer arithmetic and logical operations), making it the first design for a general-purpose computer. The first modern analogue computer was a tide-predicting machine invented by Sir William Thompson. In 1941, Konrad Zuse came up with Z3, the world's first working electromechanical programmable, fully automatic digital computer. It was quite similar to modern machines in some respects, pioneering numerous advances such as floating point numbers. Replacement of the hard-to-implement decimal system (used in Charles Babbage's earlier design) by the simpler binary system meant that Zuse's machines were easier to build and potentially more reliable, given the technologies available at that time. 5 years later, the Electronic Numerical Integrator and Computer (ENIAC) was constructed by United States Army Research and Development Command.Installed at the University of Pennsylvania, its 40 separate eight-foot-high racks and 18,000 tubes. It was the first electronic general-purpose computer intended to help calculate ballistic trajectories. The development of integrated circuit causes an explosion in the commercial and personal use of computers and led to the invention of the microprocessor. In 70s, personal computer started to emerge. The Kenbak-1, designed by John V....
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