martes, 13 de septiembre de 2016


Now that you know a little bit about those two major inventions that changed the world, let's talk about it!

Do you think these inventions brought a series of changes to culture, language or any other aspect in that time? If so, explain (share your opinion) how those areas were affected.

After reading about those two inventions, which one do you think generated a bigger impact on culture and language, printing press, computers or both? Justify your answer.

Feel free to add comments, quotes or any other information you think necessary, important or interesting! Thanks!


The Printing Industry

The Printing Press

gutenberg.jpg (11527 bytes)He who first shortened the labor of copyists by device of movable types was disbanding hired armies, and cashiering most kings and senates, and creating a whole new democratic world: he had invented the art of printing.
(Thomas Carlyle, Sartor Resartus, 1833)
The Renaissance spread to Germany, France, England, and Spain in the late fifteenth and the sixteenth centuries. In its migration northward, Renaissance culture adapted itself to conditions unknown in Italy, such as the growth of the monarchical state and the strength of lay piety. In England France, and Spain, Renaissance culture tended to be court-centered and hence anti-republican. In Germany, no monarchical state existed but a vital tradition of lay piety was present in the Low Countries. The Brethren of the Common Life, for example, was a lay movement emphasizing education and practical piety. Intensely Christian and at the same time anticlerical (shades of what was to come!), the people in such movements found in Renaissance culture the tools for sharpening their wits against the clergy -- not to undermine faith, but restore its ancient apostolic purity.
Northern humanists were profoundly devoted to ancient learning but nothing in northern humanism compares to the paganizing trend associated with the Italian Renaissance. The northern humanists were chiefly interested in the problem of the ancient church and the question of what constituted original Christianity.
Two factors operated to accelerate the spread of Renaissance culture after 1450: growing economic prosperity and the printing press. Prosperity -- the result of peace and the decline of famine and the plague -- led to the founding of schools and colleges. In these schools the sons of gentlemen and nobles would receive a humanistic education imported from Italy. The purpose of such an education was to prepare men for a career in the church or civil service.
Sometime in the 13th century, paper money and playing cards from China reached the West. They were "block-printed," that is, characters or pictures were carved into a wooden block, inked, and then transferred to paper. Since each word, phrase or picture was on a separate block, this method of reproduction was expensive and time-consuming.
The extension of literacy among laypeople and the greater reliance of governments and businesses upon written records created a demand for a less-costly method of reproducing the written word. The import of paper from the East as well as "block-books" (see above), were major steps in transforming the printing of books. However, woodcuts were not sufficiently durable as they tended to split in the press after repeated use. Furthermore, a new block had to be carved for each new impression, and the block was discarded as unusable as soon as a slightly different impression was needed.
By the middle of the 15th century several print masters were on the verge of perfecting the techniques of printing with movable metal type. The first man to demonstrate the practicability of movable type was Johannes Gutenberg (c.1398-1468), the son of a noble family of Mainz, Germany. A former stonecutter and goldsmith, Gutenberg devised an alloy of lead, tin and antimony that would melt at low temperature, cast well in the die, and be durable in the press. It was then possible to use and reuse the separate pieces of type, as long as the metal in which they were cast did not wear down, simply by arranging them in the desired order. The mirror image of each letter (rather than entire words or phrases), was carved in relief on a small block. Individual letters, easily movable, were put together to form words; words separated by blank spaces formed lines of type; and lines of type were brought together to make up a page. Since letters could be arranged into any format, an infinite variety of texts could be printed by reusing and resetting the type.
By 1452, with the aid of borrowed money, Gutenberg began his famous Bible project. Two hundred copies of the two-volume Gutenberg Bible were printed, a small number of which were printed on vellum. The expensive and beautiful Bibles were completed and sold at the 1455 Frankfurt Book Fair, and cost the equivalent of three years' pay for the average clerk. Roughly fifty of all Gutenberg Bibles survive today.
In spite of Gutenberg's efforts to keep his technique a secret, the printing press spread rapidly. Before 1500 some 2500 European cities had acquired presses. German masters held an early leadership, but the Italians soon challenged their preeminence. The Venetian printer Aldus Manutius published works, notably editions of the classics.
The immediate effect of the printing press was to multiply the output and cut the costs of books. It thus made information available to a much larger segment of the population who were, of course, eager for information of any variety. Libraries could now store greater quantities of information at much lower cost. Printing also facilitated the dissemination and preservation of knowledge in standardized form -- this was most important in the advance of science, technology and scholarship. The printing press certainly initiated an "information revolution" on par with the Internet today. Printing could and did spread new ideas quickly and with greater impact.
Printing stimulated the literacy of lay people and eventually came to have a deep and lasting impact on their private lives. Although most of the earliest books dealt with religious subjects, students, businessmen, and upper and middle class people bought books on all subjects. Printers responded with moralizing, medical, practical and travel manuals. Printing provided a superior basis for scholarship and prevented the further corruption of texts through hand copying. By giving all scholars the same text to work from, it made progress in critical scholarship and science faster and more reliable.

source:http://www.historyguide.org/intellect/press.html

domingo, 11 de septiembre de 2016

Invention of the PC: The computer age


     The earliest electronic computers were not “personal” in any way: They were enormous and hugely expensive, and they required a team of engineers and other specialists to keep them running. One of the first and most famous of these, the Electronic Numerical Integrator Analyzer and Computer (ENIAC), was built at the University of Pennsylvania to do ballistics calculations for the U.S. military during World War II. ENIAC cost $500,000, weighed 30 tons and took up nearly 2,000 square feet of floor space. On the outside, ENIAC was covered in a tangle of cables, hundreds of blinking lights and nearly 6,000 mechanical switches that its operators used to tell it what to do. On the inside, almost 18,000 vacuum tubes carried electrical signals from one part of the machine to another.

Invention of the PC: Postwar Innovations

     ENIAC and other early computers proved to many universities and corporations that the machines were worth the tremendous investment of money, space and manpower they demanded. (For example, ENIAC could solve in 30 seconds a missile-trajectory problem that could take a team of human “computers” 12 hours to complete.) At the same time, new technologies were making it possible to build computers that were smaller and more streamlined. In 1948, Bell Labs introduced the transistor, an electronic device that carried and amplified electrical current but was much smaller than the cumbersome vacuum tube. Ten years later, scientists at Texas Instruments and Fairchild Semiconductor came up with the integrated circuit, an invention that incorporated all of the computer’s electrical parts–transistors, capacitors, resistors and diodes–into a single silicon chip.
But one of the most significant of the inventions that paved the way for the PC revolution was the microprocessor. Before microprocessors were invented, computers needed a separate integrated-circuit chip for each one of their functions. (This was one reason the machines were still so large.) Microprocessors were the size of a thumbnail, and they could do things the integrated-circuit chips could not: They could run the computer’s programs, remember information and manage data all by themselves.
The first microprocessor on the market was developed in 1971 by an engineer at Intel named Ted Hoff. (Intel was located in California’s Santa Clara Valley, a place nicknamed “Silicon Valley” because of all the high-tech companies clustered around the Stanford Industrial Park there.) Intel’s first microprocessor, a 1/16-by-1/8-inch chip called the 4004, had the same computing power as the massive ENIAC.

The invention of PC

     These innovations made it cheaper and easier to manufacture computers than ever before. As a result, the small, relatively inexpensive “microcomputer”–soon known as the “personal computer”–was born. In 1974, for instance, a company called Micro Instrumentation and Telemetry Systems (MITS) introduced a mail-order build-it-yourself computer kit called the Altair. Compared to earlier microcomputers, the Altair was a huge success: Thousands of people bought the $400 kit. However, it really did not do much. It had no keyboard and no screen, and its output was just a bank of flashing lights. Users input data by flipping toggle switches.In 1975, MITS hired a pair of Harvard students named Paul G. Allen and Bill Gates to adapt the BASIC programming language for the Altair. The software made the computer easier to use, and it was a hit. In April 1975 the two young programmers took the money they made from “Altair BASIC” and formed a company of their own—Microsoft—that soon became an empire.The year after Gates and Allen started Microsoft, two engineers in the Homebrew Computer Club in Silicon Valley named Steve Jobs and Stephen Wozniak built a homemade computer that would likewise change the world. This computer, called the Apple I, was more sophisticated than the Altair: It had more memory, a cheaper microprocessor and a monitor with a screen. In April 1977, Jobs and Wozniak introduced the Apple II, which had a keyboard and a color screen. Also, users could store their data on an external cassette tape. (Apple soon swapped those tapes for floppy disks.) To make the Apple II as useful as possible, the company encouraged programmers to create “applications” for it. For example, a spreadsheet program called VisiCalc made the Apple a practical tool for all kinds of people (and businesses)–not just hobbyists.

The PC revolution

     The PC revolution had begun. Soon companies like Xerox, Tandy, Commodore and IBM had entered the market, and computers became ubiquitous in offices and eventually homes. Innovations like the “Graphical User Interface,” which allows users to select icons on the computer screen instead of writing complicated commands, and the computer mouse made PCs even more convenient and user-friendly. Today, laptops, smart phones and tablet computers allow us to have a PC with us wherever we go.

Source: http://www.history.com/topics/inventions/invention-of-the-pc