41. Maya Mathematics 0, 1, 2, 3, 4. 5, 6, 7, 8, 9. 10, 11, 12, 13, 14. 15, 16, 17, 18, 19. Becausethe base of the number system was 20, larger numbers were written down inpowers of 20. http://www.michielb.nl/maya/math.html

M aya M athematics Instead of ten digits like we have today, the Maya used a base number of 20. (Base 20 is vigesimal.) They also used a system of bar and dot as "shorthand" for counting. A dot stood for one and a bar stood for five. In the following table, you can see how this works. Because the base of the number system was 20, larger numbers were written down in powers of 20. We do that in our decimal system too: for example 32 is 3*10+2. In the Maya system, this would be 1*20+12, because they used 20 as base. Numbers were written from bottom to top. Below you can see how the number 32 was written: 20's 1's It was very easy to add and subtract using this number system, but they did not use fractions. Here's an example of a simple addition: 8000's 400's 20's 1's As you can see, adding is just a matter of adding up dots and bars! Maya merchants often used cocoa beans, which they layed out on the ground, to do these calculations. If you have a Java-enabled browser, you will see an interactive number converter below. Fill in the a number in the top field, and press return to find its Maya equivalent.. Press +1 and -1 to change the number by one. You don't seem to have a Java-enabled browser.. Here's what the converter looks like:

42. Microframe Corporation Numeric LED Visual-Pager Displays And Vibrating Led display products viewable up to 125 feet, includes countdown timers, wired and wireless visualpagers, mini-displays, take-a-number systems and computer-controlled displays. http://www.microframecorp.com/

43. Number Names - Wikipedia, The Free Encyclopedia Although most traditional number systems are based on the decimalnumeral system, there are many regional variations, including http://en.wikipedia.org/wiki/Number_names

Number names From Wikipedia, the free encyclopedia. Different cultures have different traditional numeral systems used for writing numbers and for naming large numbers. Although most traditional number systems are based on the decimal numeral system , there are many regional variations, including: Western system: based on thousands , with variants (see below) Indian system: crore lakh (see Indian numerals Japanese system: based on ten-thousands (see below) Duodecimal numbers have only been used consistently in a few cases. One example of duodecimal numerals is in use in the Chepang language of Nepal . However, their influence can still be seen in many cultures, such as in the imperial system of units , and the former British system of pounds, shillings and pence. In many Asian languages , the great redundancy of English number words is avoided. For very large (and very small) numbers, traditional systems have been superseded by the use of scientific notation and the system of SI prefixes . Traditional systems continue to be used in everyday life. edit Systems of numerals Arabic numerals Armenian numerals Babylonian numerals Chinese numerals ... edit Related articles Abacus Myriad History of large numbers Views Article Discussion Edit History Personal tools Log in Navigation Main Page Community portal Current events Recent changes ... Donations Search Toolbox What links here Related changes Special pages Other languages Deutsch This page was last modified 23:19, 27 Mar 2004.

44. Welcome To Lawschool.westlaw.com - The Most Comprehensive Web Site West s Key number system® The key to finding good law But what ISthe Key number system and why do I need to know about it? http://lawschool.westlaw.com/KNumbers/default.asp?appflag=44

45. THE MAYAN NUMBER SYSTEM THE MAYAN number system. TABLE OF CONTENTS. http://www.geocities.com/CapeCanaveral/Launchpad/5752/

THE MAYAN NUMBER SYSTEM TABLE OF CONTENTS History of Mayan Numerology Mayan Numeration System References HISTORY OF MAYAN NUMEROLOGY The first findings or writings about the Mayan number system date back to the fourth century A.D. Evidence shows that the Mayan culture of Yucatan and Central America were extremely advanced not only in mathematics, but were believed to be geniuses when it came to time and calendars, astronomy, architecture, and commerce. It is believed that the Mayan culture was obsessed by time and numbers which studies have concluded based on drawings found on historical monuments. The Mayans were a thousand years in advance to Europe when it came to mathematics. Their intellectual knowledge was not inferior to any world standards of the time. Table of Contents MAYAN NUMERATION SYSTEM The Mayans used a vigesimal (base twenty) system of numeration with positional notation instead of the base ten decimal system used in today’s standards. The Mayan system of math was a place value system as is ours today. As stated by McLeish " In their system, place values go up in powers of twenty instead of ten. The first five places in the decimal system are 1, 10 100, 1000, 10000. The first five in the vigesimal system are 1, 20, 400, 8000, 160000."

46. Spectrum Glass ... Number System The system attempts to identify colors by number, and in most cases describeslightness or darkness, color dominance, light transmission and texture. http://www.spectrumglass.com/NumberSys.html

Explanation of Our Numbering System Spectrum Glass is classified by a code system which permits users to visualize the product even without a sample in hand. The system attempts to identify colors by number, and in most cases describes lightness or darkness, color dominance, light transmission and texture. Though the system is imperfect, and most rules have their exceptions, with a little study and practice you will find this a reasonably understandable method of communicating about Spectrum glass. The code is basically numerical, with digits to designate: Categor y - general product description Color (s Intensity of colo r (lightness / darkness) Degree of translucenc y A. CATEGORY: Always the 1st digit in a product code 100 series = Cathedrals (single non-opal colors). 200 series = Opal glasses, either solid colors (opalized) or non-white opals in a cathedral mix. 300 series = Mix of single cathedral color with white opal. 400 series = Mix of two cathedral colors. 500 series = One cathedral color described by blended hues (like greenish blue). 600 series = Multi-color mixes (3+) including white opal.

47. Tube Number Systems Frank s Electron tube Pages, Tube number systems, MAZDA NUMBERING SYSTEMSignal valves. First number indicates heater or filament rating. http://home.wxs.nl/~frank.philipse/frank/tubnum.html

Frank's Electron tube Pages Tube Number Systems European system after 1934 Philips system before 1934 Mazda numbering system Russian numbering system European system after 1934 1st letter heater indication tubes without filament A 4 V AC parallel connection B 180 mA DC C 200 mA AC/DC series or parallel connection D <= 1.4 V DC dry-battery, parallel connection E 6.3 V AC or carbattery, parallel connection F 13 V carbattery G 5V AC parallel connection H early: 4V DC battery. later: 150mA AC/DC series connection I 20V AC/DC parallel connection K 2 V battery O 150 mA AC/DC series connection P 300 mA AC/DC series connection U 100 mA AC/DC series connection V 50mA AC/DC series connection X 600 mA AC/DC series connection Y 450 mA AC/DC series connection 2nd+next letters tube systems A single detection diode B double detection diode C small-signal triode D power triode E tetrode (or 2nd emmission tube EE1) F small-signal pentode H hexode or heptode K octode L power pentode M indicator tube N thyratron Q enneode W single gasfilled rectifier diode X double gasfilled rectifier diode Y

48. Hermetic Systems: Calendar Studies Articles on the Gregorian and Julian calendars, the ISO date format, the Julian day number system, the Maya calendar, the Goddess lunar calendar, the Liberalia Triday Calendar and C functions for date conversion; plus software for calendrical conversion. http://hermetic.nofadz.com/cal_stud.htm

Calendar Studies Powered by Bravenet The Julian and Gregorian Calendars 1. The Julian Calendar 2. The Gregorian Reform 3. Adoption of the Gregorian Calendar 4. Astronomical Year Numbering 5. The Proleptic Julian and Gregorian Calendars 6. Variation in the Tropical Year 7. Accuracy of the Gregorian and Orthodox Calendars 8. True Length of the Tropical Year The ISO Date Format A note concerning date formats, especially the ISO date format. Julian Day Numbers The nature and origin of the Julian day number system. The Maya Calendar Article about the Maya Calendar See also the documentation for the Mayan Calendrics software The Structure of the Chinese Calendar How the Chinese Calendar depends on the times of astronomical events. Types of Calendar Lunar, solar, lunisolar, solar-count, etc. Lunar Calendars A more detailed discussion. The Liberalia Triday Calendar A new calendar combining a lunar calendar and a solar calendar with 3-day cycles in common. The Meyer-Palmen Solilunar Calendar A calendar consisting of 60-year cycles which stays in sync both with the Moon and with the seasons. The Goddess Lunar Calendar A calendar whose months accord with the lunar cycles and are named after thirteen goddesses.

49. Arabic Numerals There are other complications in the story, however, for it was notsimply that the Arabs took over the Indian number system. Rather http://www-history.mcs.st-andrews.ac.uk/history/HistTopics/Arabic_numerals.html

The Arabic numeral system Arabic index History Topics Index The Indian numerals discussed in our article Indian numerals form the basis of the European number systems which are now widely used. However they were not transmitted directly from India to Europe but rather came first to the Arabic/Islamic peoples and from them to Europe. The story of this transmission is not, however, a simple one. The eastern and western parts of the Arabic world both saw separate developments of Indian numerals with relatively little interaction between the two. By the western part of the Arabic world we mean the regions comprising mainly North Africa and Spain. Transmission to Europe came through this western Arabic route, coming into Europe first through Spain. There are other complications in the story, however, for it was not simply that the Arabs took over the Indian number system. Rather different number systems were used simultaneously in the Arabic world over a long period of time. For example there were at least three different types of arithmetic used in Arab countries in the eleventh century: a system derived from counting on the fingers with the numerals written entirely in words, this finger-reckoning arithmetic was the system used for by the business community; the sexagesimal system with numerals denoted by letters of the Arabic alphabet; and the arithmetic of the Indian numerals and fractions with the decimal place-value system. The first sign that the Indian numerals were moving west comes from a source which predates the rise of the Arab nations. In 662 AD Severus Sebokht, a Nestorian bishop who lived in Keneshra on the Euphrates river, wrote:-

50. Malaysia Manufacturers Directory- Malaysia Chemicals, Petrochemicals & Pharmaceu Malaysia chemical manufacturers directory. Detailed contact information, including help with the Malaysian phone number system. http://e-directory.com.my/web/chemicals.asp

Home Categories Search Products Search Support ... Information Malaysia Manufacturers Directory Support : Classified Ads Company's Search Shipping Agents Cargo Tracking. ... Global Partners Directory. Trade : International Buyer's Sign-In Manufacturer Excess. Mem. Area: ED-mail. View International Buyer's List Malaysian Seller's Sign-In Members Profile. News : Global Partners Program (Add URL). Sales Agent Require. Information: Investor Information Center. Malaysia Government Departments Links. About Us Contact Us ... Services. Malaysia's largest internet manufacturers directory. e-directory.com.my Over 4,500 Malaysian manufacturers and they are expanding. [ Join Us Tab on to our latest Handheld PC/PDA support page. Malaysia manufacturers information are available for you to access with your WiFi supported PDA at any WiFi Hotspot. Join our mailing list. We will keep you inform of our latest news update. Name: E-mail: Search Manufacturer by Industrial Categories Search manufacturer listed on our system by major Industrial categories.

51. Number Systems number systems. For display purposes, each decimal digit is often representedby a fourbit binary number in a system called binary coded decimal (BCD). http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/number.html

Number Systems Digital circuits are inherently binary in nature, but several types of representations of numerical data are in use. The representation of an unsigned integer can be done in binary, octal, decimal or hexadecimal. For display purposes, each decimal digit is often represented by a four-bit binary number in a system called binary coded decimal ( BCD Conversions between these representations can be handled in a routine manner. The representation of signed numbers presents more problems and those problems are addressed in various ways. Some of the codes used are "sign magnitude", "offset binary", "2's complement", "excess-3", "4221", and "Gray". A table can show the display of four-bit integers. Index Electronics concepts Digital Circuits HyperPhysics ... Electricity and magnetism R Nave Go Back Alphanumeric Coding For the inherently binary world of the computer, it is necessary to put all symbols, letters, numbers, etc. into binary form. The most commonly used alphanumeric code is the ASCII code, with others like the EBCDIC code being applied in some communication applications. ASCII Code EBCDIC Code ... Electricity and magnetism R Nave Go Back Parity Checks Errors in digital code will result in the changing of a to a 1 or vice versa. One helpful method for determining if a single error of that type has ocurred is to check the evenness or oddness of the sum of the set bits. To facilitate this check an extra bit called the parity bit is added to each word in a data transmission. In the even-parity method the parity bit is chosen so that the total number of 1's including the parity bit is even. The receiver checks the parity to detect any single-bit errors. The same thing can be accomplished with an odd-parity method, so it is necessary to know which is being used in order to communicate with a host computer. It will also be necessary to know how many data bits and how many stop bits are being used.

52. International ISBN Agency: Coordinator Of The International Standard Book Number The International ISBN Agency. International Standard Book number system for Books,Software, Mixed Media etc. in Publishing, Distribution and Library Practices. http://www.isbn-international.org/

The International ISBN Agency I nternational S tandard B ook N umber System for Books, Software, Mixed Media etc. in Publishing, Distribution and Library Practices (en cours de construction)

53. Answers And Explanations -- Number Systems With Different Kinds Of Numbers number systems with Different Kinds of Numbers. In mathematics, the phrase numbersystem refers to any collection of objects that has the following properties http://www.math.toronto.edu/mathnet/answers/numbersystems.html

Navigation Panel: (These buttons explained below Answers and Explanations Number Systems with Different Kinds of Numbers In mathematics, the phrase number system refers to any collection of objects that has the following properties: there is a rule for how to add two objects together, there is a rule for how to multiply two objects together, the rules for addition and multiplication satisfy the familiar properties of arithmetic, such as commutativity (order doesn't matter), associativity (in a sum of three of more terms, it doesn't matter which two you add first, and likewise for products), and distributivity a b c ab ac ), and all objects have corresponding negatives (from which we can define subtraction as the addition of one object to the negative of another), and some objects have reciprocals (from which we can define division as the multiplication of one object by the reciprocal of another). The properties of subtraction and division follow automatically from the corresponding properties of addition and multiplication, so we need not mention them explicitly. In some cases we might consider two objects in the collection to be equal even if they are not the same object; for instance, the fractions 1/2 and 2/4 are equal, even though they are different pairs of numbers. When this is the case, we also need, in addition to the properties above, a precise definition of when two objects are equal.

54. Answers And Explanations -- Number System Context: Why Infinity Doesn't Exist below) Answers and Explanations. More Information on Why Infinity Does Not Exist in the Context of Any number system. This page http://www.math.toronto.edu/mathnet/answers/infnotnumber.html

Navigation Panel: (These buttons explained below Answers and Explanations More Information on Why "Infinity" Does Not Exist in the Context of Any Number System This page provides supplementary information to the page of explanations on the question "does infinity exist?". No "infinity" concept exists in the context of any number system, if by number system one means a collection of concepts that have operations like addition and multiplication the way familiar numbers do, operations which obey the usual properties of arithmetic. One way to see this is to think, what would infinity minus 1 be? It couldn't be a finite number, since no finite number plus 1 equals infinity. So it must be infinite, and this would mean From this one can immediately see that the rules of arithmetic must be violated, since if they held one could subtract infinity from both sides to conclude that -1 = 0, which isn't true. Therefore, there is no number system which possesses the usual rules of arithmetic and in which infinity exists. In other words, Infinity does not exist, if by "exist" one means in the context of a number system

55. 14185 Chapter 1 number systems. Types Carry And Borrow Principles; Carry AndBorrow Principles Continued; The Binary number system; Positional http://www.tpub.com/content/neets/14185/

Click Here to Order this information in Print Click Here to Order this information on CD-ROM ... Click here to make tpub.com your Home Page Page Title: 14185 Back Up Next tpub.com Updates ... Home Information Categories Administration Advancement Aerographer Automotive ... Support Integrated Publishing

56. A Guide For The California Articulation Number System A Guide for the California Articulation number system. Revised 1995. The CaliforniaArticulation number system was officially started on July 1, 1985. http://www.curriculum.cc.ca.us/Curriculum/Resources/CAN_Guide.htm

A Guide for the California Articulation Number System Revised 1995 Contents What is Course Articulation? What is the California Articulation Number System? What Are the Criteria to Qualify a Course for the California Articulation Number System? How Does the California Articulation Number System Work? ... Appendices Introduction Every year, more than 50,000 community college students transfer to the California State University and the University of California. It is common for many of the 106 community colleges to have students transfer to all of the public four-year universities. A glance at campus catalogs, course numbering schemes, academic policies, and the processes involved in determining course comparability for major preparation or comparability of courses in support of another major will illustrate the potential for confusion and misinterpretation. The need for quality course articulation and a course numbering system to not only simplify the process, but to provide accurate academic preparation information in a consistent and orderly manner, is very obvious. Promote the transfer of community college students to four-year postsecondary institutions by simplifying the identification of transferable courses and the specific disciplines and programs to which those courses are transferable.

57. The California Articulation Number System: Toward Increased Faculty Participatio The California Articulation number system (CAN) Toward Increased Faculty Participation. CPECconducted a nationwide study of course numbering systems. http://www.curriculum.cc.ca.us/Curriculum/DevelopCurOutline/CANSystem_FacPartici

The California Articulation Number System (CAN): Toward Increased Faculty Participation Educational Policy Committee 1997 - 98 Janis Perry, Chair - Santa Ana College - Counseling John Nixon - Santa Ana College - CIO Representative Linda Collins - Los Medanos College - Sociology/Humanities Lin Marelick - Mission College - Graphic Design Richard Rose - Santa Rosa College - Counseling Chris Storer - DeAnza College - Philosophy Kathy Sproles - Hartnell College - English/Basic Skills David Wilkerson - Santa Barbara College - Student Senate Rep. Ian Walton - Mission College - Mathematics Educational Policy Committee 1996 - 97 Regina Stanback-Stroud, Chair(Fall) - Santa Ana College - Health Science Janis Perry, Chair (Spring) - Santa Ana College - Counseling Dona Boatwright - College of Marin - CIO Representative Linda Collins - Los Medanos College - Sociology/Humanities Richard Rose - Santa Rosa College - Counseling Marina Valenzuela-Smith - Antelope Valley College - Foreign Language Ian Walton - Mission College - Mathematics Abstract This paper responds to plenary session resolutions directing the Academic Senate Executive Committee to prepare a background paper regarding faculty participation, evaluation and funding of the California Articulation Number (CAN) system.

58. MS ID Number System Could Track All Windows Users | The Register MS ID number system could track all Windows users. By John Lettice.Published Sunday 7th March 1999 1617 GMT. Earlier this year the http://www.theregister.co.uk/1999/03/07/ms_id_number_system_could/

Skip to content International Edition Jobs Shop ... Luxury Watches SetUpDropMenu('StoreMenuItem', 'StoreMenu'); Biting the hand that feeds IT Enterprise Software Personal Mobile ... Business Business: Financial News Small Biz Employment Channel Search SetPromptText('q', 'Search'); Tools/Services The Register Mobile Desktop News Panel Newsletter Reader Studies ... Business MS ID number system could track all Windows users By John Lettice Published Sunday 7th March 1999 16:17 GMT Earlier this year the built-in serial numbers in Intel's Pentium III caused a privacy storm. But now a software company has revealed that Microsoft has been running a rather more effective identification system since the launch of Windows 98. So Redmond knows a lot more about you than you might have thought. The point about the Intel system is that it could You're good, You're very good - Jobsite, The best people for the job Browse The Register's IT training library Promote your Events and Training courses for free! Luxury Watches from The Reg Related Products Mobile, Wireless, PDA

59. Delta Electronics EMI Filters Part Number System New Product Release, Online Catalogue, Part number system. Part number system.MODELS OTHER THAN POWER ENTRY MODULE TYPES AND PC BOARD MOUNTING TYPES. http://www.delta.com.tw/products/emi/partno.htm

Search : Home Contact Us Site Map Product Finder : product in alphabetic order . AC Motor Drive . Adapter,Charger . Ballast . Chip Inductor . DC/DC Converters,Voltage Regulator Module . Brushless DC Motors / Stepping Motors . EMI Filter . Fiber Optical Transceiver . Front Projectors . Hi-Resolution Color Monitors . Human Machine Interface . Inverter . Inductor and Transformer . LCD TV . Optical Incremental Encoder . PDP TV . Programmable Logic Controller . Rear Projection Display . RS-485/RS-422 Communication modules . Switching Power Supplies . Telecom Power . Temperature Controllers . Thermal Management Products . UPS . Voltage Controlled Oscillator (VCO), VCTCXO, Power Amplifier Module

60. The Number System The number system. This page contains concise explanations of commonly used typesof numbers. Natural Numbers. Natural numbers are the numbers 1, 2, 3, . http://www.math.utah.edu/~alfeld/math/numbers.html

Understanding Mathematics by Peter Alfeld, Department of Mathematics, University of Utah The Number System This page contains concise explanations of commonly used types of numbers. Natural Numbers Natural numbers are the numbers 1, 2, 3, ... . Integers All natural numbers are integers, but also 0, -1, -2, ... . Rational numbers Rational numbers are fractions p/q where q is non-zero and p and q are both integer. For example, all integers are rational (pick q =1). Other examples of rational numbers are Real numbers Without getting technical, real numbers are all numbers that can be written as a possibly never repeating decimal fraction. For example, all rational numbers are real. Their decimal representations do repeat. Decimal fractions whose representation do not repeat are irrational.

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