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There have been few inventions that has grown an attached itself to as many lives as the invention of the computer. Computers can be found in almost every aspect of our lives, if not direct, indirectly. When I think of the different ways I come in contact with computers in one day its astounding. When I wake in the morning its usually by the assistance of an alarm clock that I program to alarm at a specific time. When I use my Metro Card to gain entrance to the train, a computer reads the funds available and allows the transaction. These are just a few ways that I personally come in contact with computers, there are many more.
Computers are revolutionary by nature since their advancements have led to many scientific breakthroughs and are currently assisting in the discoveries of the future. The electronic computer has been around for over half a century but only in the last 40 years have we seen its influences and achievements The very earliest existence of the modern day computers ancestor is the abacus. These date back to almost 2000 years ago. It is simply a wooden rack holding parallel wires on which beads are strung. When these beads are moved along the wire according to " programming" rules that the user must memorize, all ordinary arithmetic operations can be performed (Soma, 14).
The next innovation in computers took place in 1694 when Blaise Pascal invented the first " digital calculating machine" . It could only add numbers and they had to be entered by turning dials. It was designed to help Pascals father who was a tax collector (Soma, 32). As you can see computers were used when complex calculations were involved and speed was essential. Computer technology not only has solved problems but also has created some, including a certain amount of culture shock as individuals attempt to deal with the new technology. A major role of computer science has been to alleviate such problems, mainly by making computer systems cheaper, faster, more reliable, easier to use.
Computers are forever present in the workplace. The outbreak of World War II produced a desperate need for computing capability, especially for the military. New weapons systems were produced which needed trajectory tables and other essential data. In 1942, John P. Eckert, John W. Mauchley, and their associates at the University of Pennsylvania decided to build a high-speed electronic computer to do the job.
This machine became known as ENIAC, for " Electrical Numerical Integrator And Calculator" . It could multiply two numbers at the rate of 300 products per second, by finding the value of each product from a multiplication table stored in its memory. ENIAC was thus about 1, 000 times faster than the previous generation of computers (Dolotta, 47). ENIAC used 18, 000 standard vacuum tubes, occupied 1800 square feet of floor space, and used about 180, 000 watts of electricity. It used punched-card input and output. The ENIAC was very difficult to program because one had to essentially re-wire it to perform whatever task he wanted the computer to do.
It was, however, efficient in handling the particular programs for which it had been designed. ENIAC is generally accepted as the first successful high-speed electronic digital computer and was used in many applications from 1946 to 1955 (Dolotta, 50). Mathematician John von Neumann was very interested in the ENIAC. In 1945 he undertook a theoretical study of computation that demonstrated that a computer could have a very simple and yet be able to execute any kind of computation effectively means of proper programmed control without the need for any changes in hardware.
Von Neumann came up with incredible ideas for methods of building and organizing practical, fast computers. These ideas, which came to be referred to as the stored-program technique, became fundamental for future generations of high-speed digital computers and were universally adopted (Hall, 73). Today, the chip? based computer easily packs the power of more than 10, 000 Eniac's into a silicon chip the size of an infant? s fingertip. (Reid 64) The chip itself was invented by (Jack Kilby) and (Robert Noyce) in 1958, but their crude devices looked nothing like the sleek, paper?
thin devices common now. (Reid 66) The first integrated circuit had but four transistors and was half an inch long and narrower than a toothpick. Chips found in today? s PCs, such as the Motorola 68040, which allows more than 1. 2 million transistors onto a chip half an inch square. (Poole 136) ). The first wave of modern programmed electronic computers to take advantage of these improvements appeared in 1947. This group included computers using random access memory (RAM), which is a memory designed to give almost constant access to any particular piece of information (Hall, 75). These machines had punched-card or punched-tape input and output devices and RAMs of 1000 -word capacity.
Physically, they were much more compact than ENIAC: some were about the size of a grand piano and required 2500 small electron tubes. This was quite an improvement over the earlier machines. The first-generation stored-program computers required considerable maintenance, usually attained 70 % to 80 % reliable operation, and were used for 8 to 12 years. Typically, they were programmed directly in machine language, although by the mid- 1950 s progress had been made in several aspects of advanced programming. This group of machines included EDVAC and UNIVAC, the first commercially available computers (Hazewindus, 102). The UNIVAC was developed by John W.
Mauchley and John Eckert, Jr. in the 1950? s. Together they had formed the Mauchley-Eckert Computer Corporation, Americas first computer company in the 1940?
s. During the development of the UNIVAC, they began to run short on funds and sold their company to the larger Remington-Rand Corporation. Eventually they built a working UNIVAC computer. It was delivered to the U. S. Census Bureau in 1951 where it was used to help tabulate the U.
S. population (Hazewindus, 124).
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Research essay sample on John W Mauchley High Speed Electronic
