|
Printing Telegraph
The printing telegraph was invented by Royal Earl House in 1846. House's equipment could transmit around 40 instantly readable words per minute, but was difficult to manufacture in bulk. The printer could copy and print out up to 2,000 words per hour. This invention was first put in operation and exhibited at the Mechanics Institute in New York in 1844. House’s Type Printing Telegraph of 1849 was Royal Earl House's second and much improved type-printing instrument and was widely used on lines on America's east coast from 1850. Hughes telegraph devices, which also had piano style keyboards, were very popular in France, where there were likely many more piano and harpsichord players than telegraphers. Early stock ticker machines are also examples of printing telegraphs. Operation The device was made by linking two 28-key piano-style keyboards by wire. Each piano key represented a letter of the alphabet and when pressed caused the corresponding letter to print at the receiving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Earl House
Royal Earl House (9 September 181425 February 1895) was the inventor of the first printing telegraph, which is now kept in the Smithsonian Institution. His nephew Henry Alonzo House is also a noted early American inventor. Royal Earl House spent his childhood in Vermont experimenting, designing, and building, a habit which would earn him distinction as an adult. He once caught a toad, skinned it, placed a set of springs in the skin and made it hop. Around 1840, he went to Buffalo, New York to live with relatives and attend law school in that town. However, he read a work on electricity which so inspired him that he decided to give up law and study the science of electricity instead. He was also interested in mechanics, chemistry and magnetism. By 1846, the Morse telegraph service was operational between Washington, DC, and New York. Royal Earl House patented his printing telegraph that same year. He linked two 28-key piano-style keyboards by wire. Each piano key represented a le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printing Telegraph
The printing telegraph was invented by Royal Earl House in 1846. House's equipment could transmit around 40 instantly readable words per minute, but was difficult to manufacture in bulk. The printer could copy and print out up to 2,000 words per hour. This invention was first put in operation and exhibited at the Mechanics Institute in New York in 1844. House’s Type Printing Telegraph of 1849 was Royal Earl House's second and much improved type-printing instrument and was widely used on lines on America's east coast from 1850. Hughes telegraph devices, which also had piano style keyboards, were very popular in France, where there were likely many more piano and harpsichord players than telegraphers. Early stock ticker machines are also examples of printing telegraphs. Operation The device was made by linking two 28-key piano-style keyboards by wire. Each piano key represented a letter of the alphabet and when pressed caused the corresponding letter to print at the receiving ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teleprinter
A teleprinter (teletypewriter, teletype or TTY) is an electromechanical device that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations. Initially they were used in telegraphy, which developed in the late 1830s and 1840s as the first use of electrical engineering, though teleprinters were not used for telegraphy until 1887 at the earliest. The machines were adapted to provide a user interface to early mainframe computers and minicomputers, sending typed data to the computer and printing the response. Some models could also be used to create punched tape for data storage (either from typed input or from data received from a remote source) and to read back such tape for local printing or transmission. Teleprinters could use a variety of different communication media. These included a simple pair of wires; dedicated non-switched telephone circuits (leased lines); switched network ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telegraph Keyboard
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensive and sophisticated as in China, were generally not capable of transmitting arbitrary text messages. Possible messages were fixed and predetermined and such systems are thus not true telegraphs. The earliest true telegraph put into widespread use was the optical telegraph of Claude Chappe, invented in the late 18th century. The system was used extensively in France, and European nations occupied by France, during the Napoleonic era. The electric telegraph started to replace the optical telegraph in the mid-19th century. It was first taken up in Britain in the form of the Cooke and Wheatstone telegraph, initially used mostly as an aid to railway signalling. This ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institution Of Engineering And Technology
The Institution of Engineering and Technology (IET) is a multidisciplinary professional engineering institution. The IET was formed in 2006 from two separate institutions: the Institution of Electrical Engineers (IEE), dating back to 1871, and the Institution of Incorporated Engineers (IIE) dating back to 1884. Its worldwide membership is currently in excess of 158,000 in 153 countries. The IET's main offices are in Savoy Place in London, England, and at Michael Faraday House in Stevenage, England. In the United Kingdom, the IET has the authority to establish professional registration for the titles of Chartered Engineer, Incorporated Engineer, Engineering Technician, and ICT Technician, as a licensed member institution of the Engineering Council. The IET is registered as a charity in England and Wales, and in Scotland. Formation Discussions started in 2004 between the IEE and the IIE about merging to form a new institution. In September 2005, both institutions held votes of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David McCallum (inventor)
David Keith McCallum Jr. (born 19 September 1933) is a Scottish actor and musician. He first gained recognition in the 1960s for playing secret agent Illya Kuryakin in the television series ''The Man from U.N.C.L.E''. In recent years, McCallum has gained renewed international recognition and popularity for his role as NCIS medical examiner Dr. Donald "Ducky" Mallard in the American television series ''NCIS''. With John Leyton and William Russell, he is one of the last living actors from the 1963 classic '' The Great Escape''. Early life McCallum was born 19 September 1933, in Maryhill, Glasgow, the second of two sons of orchestral violinist David McCallum Sr. and Dorothy (née Dorman), a cellist. When he was three, his family moved to London for his father to play as the leader of the London Philharmonic Orchestra. Early in the Second World War, he was evacuated back to Scotland, where he lived with his mother at Gartocharn by Loch Lomond. McCallum won a scholarship to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Globotype
The Globotype is a colour display for telecommunications. It was invented and patented by David McCallum of Stonehouse, Devon, England. The device features very low cost and does not use consumable supplies. It is Royal Letters Patent No. 2924 issued December 29, 1855. The design and coding used is described in ''Froehlich/Kent Encyclopedia of Telecommunications'', Volume 2, pages 461 and 462. Mr. McCallum invented the Globotype in response to the use of printing telegraph machines which he saw as both expensive and unneeded. "They are all very ingeniously contrived ... but why attach such combersome expensive machinery for the purpose of printing the letters? If a message must be printed, why not have a man in the office do it? He will do it better than it can be done by galvanic power attached to a telegraph wire, etc. etc." -David McCallum The inventor published a small booklet in 1856 entitled: ''THE GLOBOTYPE TELEGRAPH: A recording instrument, by which small coloure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirography
Chirography (from Greek χείρ ''hand'') is the study of penmanship and handwriting in all of its aspects. History According to Georges Jean (1992, p. 12), standardised writing 'cannot be said to exist until there is an agreed upon repertoire of formal signs or symbols that can be used to reproduce clearly the thoughts and feelings' that those utilising them hope to put forth. Ancient writing Although writing's origins may be traced back to the renowned French cave paintings in Lascaux (said to be about 20,000 years old), it appears to have been nearly 17 millennia before any formal system of writing was developed. The Sumerians are regarded as the first everyday users (in agricultural applications) of pictographs (of which scholars have catalogued some 15,000 individual symbols). Contextual handwriting/cuneiform Contextual handwriting is said to have begun with the development of Cuneiform (from the Latin Cuneus and referring to the styluses used in creating the pictog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Union
The Western Union Company is an American multinational financial services company, headquartered in Denver, Colorado. Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, the company changed its name to the Western Union Telegraph Company in 1856 after merging with several other telegraph companies. The company dominated the American telegraphy industry from the 1860s to the 1980s, pioneering technology such as telex and developing a range of telegraph-related services (including wire money transfer) in addition to its core business of transmitting and delivering telegram messages. After experiencing financial difficulties, Western Union began to move its business away from communications in the 1980s and increasingly focused on its money transfer services. The company ceased its communications operations completely in 2006, at which time The New York Times described it as "the world's largest money-transfer business" and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morse Code
Morse code is a method used in telecommunication to encode text characters as standardized sequences of two different signal durations, called ''dots'' and ''dashes'', or ''dits'' and ''dahs''. Morse code is named after Samuel Morse, one of the inventors of the telegraph. International Morse code encodes the 26 basic Latin letters through , one accented Latin letter (), the Arabic numerals, and a small set of punctuation and procedural signals ( prosigns). There is no distinction between upper and lower case letters. Each Morse code symbol is formed by a sequence of ''dits'' and ''dahs''. The ''dit'' duration is the basic unit of time measurement in Morse code transmission. The duration of a ''dah'' is three times the duration of a ''dit''. Each ''dit'' or ''dah'' within an encoded character is followed by a period of signal absence, called a ''space'', equal to the ''dit'' duration. The letters of a word are separated by a space of duration equal to three ''dits'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daisy Wheel Printer
Daisy wheel printing is an impact printing technology invented in 1970 by Andrew Gabor at Diablo Data Systems. It uses interchangeable pre-formed type elements, each with typically 96 glyphs, to generate high-quality output comparable to premium typewriters such as the IBM Selectric, but two to three times faster. Daisy wheel printing was used in electronic typewriters, word processors and computers from 1972. The daisy wheel is so named because of its resemblance to the daisy flower. By 1980 daisy wheel printers had become the dominant technology for high-quality text printing. Dot-matrix impact, thermal, or line printers were used where higher speed or image printing were required and poor print quality was acceptable. Both technologies were rapidly superseded for most purposes when dot-based printers—in particular laser printers—that could print any characters or graphics, rather than being restricted to a limited character set, became able to produce outp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Data Transmission
Data transmission and data reception or, more broadly, data communication or digital communications is the transfer and reception of data in the form of a digital bitstream or a digitized analog signal transmitted over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers, wireless communication using radio spectrum, storage media and computer buses. The data are represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave, or infrared signal. Analog transmission is a method of conveying voice, data, image, signal or video information using a continuous signal which varies in amplitude, phase, or some other property in proportion to that of a variable. The messages are either represented by a sequence of pulses by means of a line code (''baseband transmission''), or by a limited set of continuously varying waveforms (''passband transmission''), using a digital modulat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
