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1284

 

1281 1282 1283 1284 1285 1286 1287 1288 1289 1290

Contents:

political events
commerce
education
environment
food and drink

political events

Castile and León's Alfonso X dies at Seville April 4 at age 63 after a 32-year reign in which he is reputed to have said, "Had I been present at the Creation, I would have given some useful hints for the better ordering of the universe." Alfonso el Sabio (the Wise) is succeeded by his second son, Sancho, whom he has tried to exclude from the succession but who will rule through violence and strife until 1295 as Sancho IV (el Bravo).

Pisa elects the Guelph leader Ugolino della Gherardesca, conte di Donoratico, as podesta and captain of the people. Formerly a Ghibelline, Ugolino concludes a peace with Florence but will rule tyranically until 1288, using his position to exile his personal enemies and destroy their castles.

Genoa gives command of a fleet to merchant-diplomat Benedetto Zaccaria, who blockades Pisa's Porto Pisano on the Tyrrhenian Sea, maneuvers the Pisans into committing their fleet to combat, and defeats them in the Battle of Meloria, a loss from which Pisa will never recover. Named ambassador to the court of the Byzantine emperor Michael VIII Paleologus 20 years ago, Zaccaria and his brother Manuel were given the fief of Phocaea north of Smyrna and used its alum mines as the basis on which to build a commercial empire that has been trading in the Black Sea, in Constantinople, Flanders, France, North Africa, and Spain.

Persia's prince Arghun leads a revolt that unseats his uncle Tegüder, who is executed August 10. Formally enthroned August 11 as the fourth Mongol il-khan (subordinate khan), Arghun countermands Tegüder's Islamic policies, reinstates Buddhism as the state religion, and will rule until his death in 1291.

Kublai Khan leads a 500,000-man Chinese army into Vietnam (see 944). Guerrillas organized by military strategist Tran Hung Dao, 55, fall back along the valley of the Red River, follow a scorched-earth policy, and then launch a counterattack that frees the Vietnamese capital and expels the Mongol invasion force (see 1287).

commerce

Venice coins the first gold ducats, its merchants having prospered in trade with the East while those at Florence thrive on trade with the North (see florins, 1252). Made of 24-carat gold, the ducat weighs 3.5 grams, will serve as a standard of value throughout Europe, and will retain its gold content until 1797.

education

Cambridge University (the University of Cambridge) gets its first college as the Benedictine monk Hugh de Balsham, bishop of Ely, founds what later will be called Peterhouse with a view to increasing the supply of academically trained clergymen (see 1231). The bishop established the college 4 years ago for "studious scholars living according to the rule of the scholars of Oxford called of Merton," but although they were to reside in "the dwelling-place of the secular brethren of the Hospital of St. John" the scholars did not fit in with the others and have been relocated to two hostels near the church of St. Peter (see Clare, 1326).

environment

Rats are so prevalent in Europe that a story appears about a piper who leads children into a hollow because townspeople have refused to pay him for piping their rats into the river Weser. Rattenfänger von Hameln may also have reference to the Children's Crusade of 1212, but much distress is caused by rats, which not only consume grain stores, seeds, poultry, and eggs but also bite infants and spread disease (see 1484; Black Death, 1340).

food and drink

Ravioli gains popularity at Rome, where people have been consuming lagano cum caseo (fettucini) for years (see 1279).

1281 1282 1283 1284 1285 1286 1287 1288 1289 1290


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Sci & Tech Chronology: In the year 1284
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Construction

The roof of Beauvais Cathedral collapses, demonstrating that the trial-and-error method of Gothic construction sometimes fails. The roof of Beauvais Cathedral later collapses again. The tower, built in the 14th century, also collapses once. See also 1225 Construction.

Medicine & health

Mamluk Sultan Mansur Qalaun builds Mansuri Hospital in Cairo, the most sophisticated medical center of its time, with separate wards for fevers, eye diseases, surgery, dysentery, and mental illness. See also 1154 Medicine & health.


An IEEE standard for an enhanced parallel interface (parallel port) for personal computers, superseding the Centronics interface. Introduced in 1994, IEEE 1284 can send addresses, allowing individual components in a multifunction device (printer, scanner, fax, etc.) to be addressed independently. Unlike the Centronics interface, the specifications of the cable are defined in IEEE 1284, providing a cable length up to 32 feet. A legacy interface today, IEEE 1284 has been superseded by USB and network connections. See Centronics interface, DOT4 and USB.

Five Modes of Operation

IEEE 1284 defines five modes, and the driver determines which to use based on the connected device. Compatibility mode enables data transfer with the earlier Centronics interface at 150 KB/sec.

Enhanced Capabilities Port (ECP) mode and Enhanced Parallel Port (EPP) mode provide bidirectional speeds up to 1.5 MB/sec. ECP was proposed by HP and Microsoft for printers, and EPP was proposed by Intel, Xircom and Zenith Data Systems for other peripherals.

Byte and Nibble modes provide an 8-bit and 4-bit channel respectively from the peripheral to the host. They are used to enhance the bidirectional capability of the Centronics standard.

IEEE 1284 Printer Cable
Using the same connectors as the Centronics interface, but with a higher quality cable, IEEE 1284 cables can be up to 32 feet long. The PC contains a 25-pin, female DB-25 socket, while the printer has a 36-pin, female Centronics socket.

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Wikipedia: 1284
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Years:
1281 1282 1283 – 1284 – 1285 1286 1287
Decades:
1250s 1260s 1270s1280s1290s 1300s 1310s
Centuries:
12th century13th century14th century
1284 by topic
Politics
State leaders – Sovereign states
Birth and death categories
BirthsDeaths
Establishments and disestablishments categories
Establishments – Disestablishments
Art and literature
1284 in poetry
1284 in other calendars
Gregorian calendar 1284
MCCLXXXIV
Ab urbe condita 2037
Armenian calendar 733
ԹՎ ՉԼԳ
Bahá'í calendar -560 – -559
Berber calendar 2234
Buddhist calendar 1828
Burmese calendar 646
Byzantine calendar 6792 – 6793
Chinese calendar 癸未年十二月十三日
(3920/3980-12-13)
— to —
甲申年十一月廿四日
(3921/3981-11-24)
Coptic calendar 1000 – 1001
Ethiopian calendar 1276 – 1277
Hebrew calendar 5044 – 5045
Hindu calendars
 - Vikram Samvat 1339 – 1340
 - Shaka Samvat 1206 – 1207
 - Kali Yuga 4385 – 4386
Holocene calendar 11284
Iranian calendar 662 – 663
Islamic calendar 682 – 683
Japanese calendar
Korean calendar 3617
Thai solar calendar 1827

Contents

Events

War and politics

Culture

Births

Deaths

In legend

Computing

IEEE 1284 – A parallel port specification


 
 

 

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