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ptolemy    音标拼音: [t'ɑləmi]
n. 人名

人名

Ptolemy
n 1: Alexandrian astronomer (of the 2nd century) who proposed a
geocentric system of astronomy that was undisputed until
the late Renaissance [synonym: {Ptolemy}, {Claudius
Ptolemaeus}]
2: an ancient dynasty of Macedonian kings who ruled Egypt from
323 BC to 30 BC; founded by Ptolemy I and ended with
Cleopatra [synonym: {Ptolemy}, {Ptolemaic dynasty}]

A flexible foundation for the specification, simulation, and
rapid prototyping of systems. It is an {object-oriented}
framework within which diverse models of computation can
co-exist and interact. For example, using Ptolemy a
{data-flow} system can be easily connected to a hardware
simulator which in turn may be connected to a discrete-event
system. Because of this, Ptolemy can be used to model entire
systems. In addition, Ptolemy now has code generation
capabilities. From a {flow graph} description, Ptolemy can
generate both {C} code and {DSP} {assembly code} for rapid
prototyping. Note that code generation is not yet complete,
and is included in the current release for demonstration
purposes only.

Version 0.4.1 includes a graphical algorithm layout, code
generator and simulator. It requires {C}, {C} and has been
ported to {Sun-4}, {MIPS}/{Ultrix}; {DSP56001}, {DSP96002}.
Ptolemy is an active research project.

{(ftp://ptolemy.bekeley.edu/pub/ptolemy/)}. Mailing list:
ptolemy-hackers-request@ohm.berkeley.edu. E-mail:
.

(1993-04-22)


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  • Ptolemy I Soter - Wikipedia
    Ptolemy was one of Alexander's most trusted companions and military officers After the death of Alexander in 323 BC, Ptolemy retrieved his body as it was en route to be buried in Macedon, placing it in Memphis instead, where it was later moved to Alexandria in a new tomb
  • Ptolemy | Accomplishments, Biography, Facts | Britannica
    Ptolemy was an astronomer, mathematician, and geographer who lived during the 2nd century CE He is known for his geocentric (Earth-centred) model of the universe
  • Claudius Ptolemy - World History Encyclopedia
    Claudius Ptolemy (c 100 to c 170 CE) was an Alexandrian mathematician, astronomer, and geographer
  • Claudius Ptolemy - Biography, Facts and Pictures
    Claudius Ptolemy wrote the Almagest, the work that defined astronomy for over 1,000 years The Almagest included a catalogue of over a thousand stars, recording their positions, constellations, and relative brightnesses; and a mathematical model predicting the movements of the planets
  • Ptolemy - New World Encyclopedia
    Ptolemy, or in Latin Claudius Ptolemaeus (ca 90 – ca 168 C E ), was a mathematician, philosopher, geographer, map maker, astronomer, theologian, and astrologer who lived in Alexandria, Egypt
  • Ptolemy I Biography - life, family, childhood, children, death, history . . .
    Ptolemy I (c 366–283 B C E ) was a Macedonian general under Alexander the Great (356–323 B C E ) and founder of the Ptolemaic dynasty of Egypt, a family of fifteen kings—all of whom were named Ptolemy—who reigned over Egypt for more than three hundred years
  • Claudius Ptolemy: The Famed Alexandrian Mathematician and Astronomer
    Claudius Ptolemy (c 100 – c 170 AD) was a towering figure in the ancient world, renowned for his extensive contributions to various fields of science His life and works left an indelible mark on mathematics, astronomy, astrology, geography, and music theory
  • Ptolemy - Famous Mathematicians
    Ptolemy can be described as a polymath because his studies ranged across an astonishing array of disciplines, from astronomy and geography, to mathematics, philosophy, literature and poetry The best indications place Ptolemy’s birth at about 90 A D in Alexandria, Egypt
  • The life of Ptolemy, ancient astronomer | BBC Sky at Night Magazine
    Claudius Ptolemaeus (circa AD 100–170), better known as Ptolemy, was a Greco-Roman astronomer, mathematician, geographer and cartographer He was a citizen of Alexandria, Egypt, in the 2nd century AD
  • Claudius Ptolemaeus - Ptolemy Project
    Ptolemy was an astronomer, mathemetician and geographer in the second century A D He codified the Greek geocentric view of the universe, and rationalized the apparent retrograde motion of the planets using epicycles





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