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| | Binary-coded decimal - Wikipedia, the free encyclopedia |
 | | Binary-coded decimal (BCD) is, after character encodings, the most common way of encoding decimal digits in computing and in electronic systems. | | | In the Decimal Architecture IBM 7070, IBM 7072, and IBM 7074 alphamerics were encoded using digit pairs (using two-out-of-five code in the digits, not BCD) of the 10-digit word, with the "zone" in the left digit and the "digit" in the right digit. | | | 9 (1001) + 6 (0110) = 15 (1111) in binary. |
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http://en.wikipedia.org/wiki/Binary-coded_decimal
(1233 words)
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| | BCD - Binary-Coded Decimal |
| | Binary Coded Decimal is a binary numbering system in which the decimal digits from 0 to 9 are represented by a four bit binary number. | | | Positional notation in which the individual decimal digits expressing a number in decimal notation are each represented by a binary numeral, eg., the number twenty-three is represented by 0010, 0011 in the 8-4-2-1 type of binary coded decimal notation and by 10111 in binary notation. | | | A coding system in which each decimal digit from 0 to 9 is represented by a 4-digit binary number. |
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http://www.auditmypc.com/acronym/BCD.asp
(507 words)
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| | High-Tech Dictionary Definition |
| | (BCD).A binary-coded notation in which each of the decimal digits is expressed as a binary numeral; for example, in binary-coded decimal notation 12 is 0001 0010, as opposed to 1100 in pure binary. |
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http://www.computeruser.com/resources/dictionary/definition.html?lookup=918
(33 words)
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| | Number Systems |
| | One of the most widely used representations of numerical data is the binary coded decimal (BCD) form in which each integer of a decimal number is represented by a 4-bit binary number (see conversion table). | | | There are several codes which use binary numbers to code for single digits in multi-digit decimal numbers. | | | BCD usually refers to such coding in which the binary digits have their normal values, i.e., 8421. |
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http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/number3.html
(298 words)
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| | Binary Coded Decimal - BCD |
| | Short for Binary Coded Decimal, BCD is also known as packet decimal and is numbers 0 through 9 converted to four digit binary. | | | Below is a table of the decimal numbers 0 through 9 and the binary conversion. | | | However, in binary, 25 is represented as 11001. |
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http://www.computerhope.com/jargon/b/bcd.htm
(74 words)
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| | Intuitor: How to count to 1,023 on your fingers |
| | Binary Coded Decimal (BCD) is a type of numerical representation wherein each digit of a decimal number is represented by a four-digit binary number. | | | Counting in base sixteen or hexadecimal is similar to counting in binary coded decimal. | | | So by letting four fingers on each hand represent a binary encoding of a decimal digit, it is possible to count up to 99. |
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http://www.intuitor.com/counting
(506 words)
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| | Binary Clock |
| | But this is actually a binary coded decimal 9 since only values from 0 to 9 are used 0000 to 1001. | | | Binary digits have only two values (0 and 1) so a number written in binary would be something like 1001 or 0011, which represents decimal numbers 9 and 3 respectively. | | | For example, the binary number 1001 would have a decimal value of 8+0+0+1 = 9. |
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http://ourworld.compuserve.com/homepages/Bill_Bowden/clock.htm
(939 words)
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| | Binary coded decimal |
| | coded decimal dewey decimal decimal system visual basic decimal dewey decimal system binary binary conversion binary arts binary calculator binary clock binary code binary translator | | | Utilities for Programmers A couple of Tcl/Tk based utilities, one to convert numbers between decimal, hexadecimal, octal and binary forms and another to determine which bits are set in a hexadecimal value. | | | The Formation of Binary Stars Recent observational investigations of the frequency of occurrence of pre-main-sequence binary stars have reinforced earlier suspicions that binary formation is the primary branch of the star-formation process |
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http://www.serebella.com/encyclopedia/article-Binary_coded_decimal.html
(372 words)
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| | Binary-coded decimal |
| | Binary-coded decimal, or BCD, is a method of using binary digits to represent the decimal digits 0 through 9. | | | You should note in the table above that the BCD coding is the binary equivalent of the decimal digit. | | | Each decimal digit is converted to its binary equivalent. |
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http://www.tpub.com/neets/book13/53s.htm
(451 words)
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| | BCD (Binary Coded Decimal) Number System |
| | This system is called Binary Coded Decimal or BCD which also occupies a nibble. | | | You merely assign each digit of the decimal number to a byte and convert 0 through 9 to 0000 0000 through 0000 1001, but you cannot perform the repeated division by 2 as you did to convert decimal to binary. | | | BCD is still a weighted position number system so you may perform mathematics, but we must use special techniques in order to obtain a correct answer. |
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http://www.danbbs.dk/~erikoest/bcd.htm
(1134 words)
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| | Fast binary coded decimal incrementing circuit - Patent 4256954 |
| | Sampling means are coupled to the shift register at a point whereby the most significant bit of a binary coded decimal digit is outputted therefrom when the least significant bit of the same binary coded decimal digit is being outputted from the output of the memory. | | | (i) the binary coded decimal digit being outputted from said memory is equivalent to a decimal nine, and | | | An incrementing and binary coded decimal corrector circuit for incrementing and for automatically binary coded decimal correcting in response to a control signal a number stored as a series of bits representing a plurality of binary coded decimal digits in a memory having an output, said circuit comprising: |
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http://www.freepatentsonline.com/4256954.html
(5522 words)
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| | The SNIPPETS C collection - file: BCDD.DOC |
| | Binary coded decimal values are typically data downloaded from a mainframe type computer. | | | SYNOPSIS: #include "toolbox.h" int double_to_bcd(double arg, char *buf, unsigned len, unsigned digits); DESCRIPTION: The double_to_bcd() function converts a numeric value of type double to a signed binary coded decimal format used by IBM mainframe computers. | | | The resulting binary coded decimal value is adjusted according to the position, if any, of the decimal point. |
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http://c.snippets.org/snip_lister.php?fname=bcdd.doc
(295 words)
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| | EBCDIC - Wikipedia, the free encyclopedia |
| | EBCDIC (Extended Binary Coded Decimal Interchange Code) is an 8-bit character encoding (code page) used on IBM mainframe operating systems, like z/OS, OS/390, VM and VSE, as well as IBM minicomputer operating systems like OS/400 and i5/OS. | | | It descended from punched cards and the corresponding six bit binary-coded decimal code that most of IBM's computer peripherals of the late 1950s and early 1960s used. | | | EBCDIC was devised in 1963 and 1964 by IBM and was announced with the release of the IBM System/360 line of mainframe computers. |
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http://en.wikipedia.org/wiki/EBCDIC
(813 words)
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| | 17.6 Binary Coded Decimal Fixed Point Types |
| | The name of any data type stored and manipulated in decimal digits at the binary level is binary coded decimal or BCD for short. | | | The code for arithmetic operations will now be considerably more complicated, because the decimal place has to be taken into consideration each time, and each operand can have it in a different place. | | | Many computers allow for a switch to be set to tell the nibbles to do their carry in a decimal fashion rather than a hexadecimal fashion. |
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http://www.csc.twu.ca/rsbook/Ch17/Ch17.6.html
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| | BCD Instructions in Assembly Language |
| | Binary coded decimal (BCD) is a method for implementing lossless decimal arithmetic (including decimal fractions) on a binary computer. | | | Decimal digits (0-9) can be encoded in a nibble (half a byte), with some left over bit patterns (hexadecimal A-F). | | | Instead of having separate BCD instructions, the normal binary addition and subtraction instructions are used, then hardware instructions are used to adjust the results to correct BCD results. |
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http://www.osdata.com/topic/language/asm/bcdarith.htm
(998 words)
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| | Definition: binary-coded decimal notation |
| | binary-coded decimal (BCD) notation: A binary notation in which each of the decimal digits is represented by a binary numeral. |
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http://www.atis.org/tg2k/_binary-coded_decimal_notation.html
(57 words)
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| | Binary Coded Decimal Numbers |
| | One system for encoding decimal numbers in a form that allows them to be stored on a computer is called binary coded decimal (BCD). | | | For example, the decimal fraction 0.6 cannot be stored exactly in straight binary because it is a repeating binary fraction, but it could be stored exactly in BCD. | | | Also, there is no roundoff error in BCD coding as there sometimes is in straight binary. |
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http://www.mathsci.appstate.edu/~dap/classes/1100/sect1_2.html
(240 words)
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| | binary-coded decimal Abbreviated BCD simple sysem for |
| | A simple sysem for converting decimal numbers into binary form, where each decimal digit is converted into binary and then stored as a single character. | | | In binary numbers, the largest value that can be stored in a single 8-bit byte is 255, and this obiously represents a severe limitation to storing larger numbers. | | | In BCD, each decimal digit occupies a byte, so three bytes are needed for a three-digit decimal number. |
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http://www.ssiltd.co.uk/glossary/details.asp?item=713
(370 words)
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| | Binary Coded Decimal |
| | In the case of pure binary considerable manipulation is required to convert the number to and from decimal. | | | As the maximum decimal digit that can occur is 9, the largest code that is used in four bits is 1001. | | | The advantage of BCD can be seen when you consider input or output of decimal numbers as used on, say, a pocket calculator. |
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http://www.colchsfc.ac.uk/computing/computingnotes/numberrep/bcd.html
(566 words)
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| | More mind-boggling math: Adding and subtracting unsigned BCD - 9/21/2005 - EDN |
| | Remembering that each BCD digit can only support values of 0000 to 1001 in binary (0 to 9 in decimal), this means a result greater than 9 will cause a carry-out. | | | This is a perfectly legitimate value for a binary addition, but if we are wishing to perform a BCD operation, we would expect to see a result of 2 (that's 0010 in binary) with a carry-out of 1 from the first nybble. | | | The way we obtain the ones complement of a binary value is to subtract it from a value of all 1s. |
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http://www.edn.com/article/CA6258681.html?industryid=42873
(1234 words)
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| | binary coded decimal |
| | A simple system for converting decimal numbers into binary form, in which each decimal digit is converted into binary and then stored as a single character. |
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http://www.coffeycountyks.org/Terms/2461HTML-262.html
(26 words)
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| | Packed Binary Coded Decimal Simulation |
| | This model demonstrates Packed Binary Coded Decimal character coding. | | | Each decimal digit is converted separately to binary, and stored in one nibble. | | | Instead of converting each decimal digit to binary every time we process a digit, the different characters and bit patterns are stored in lists once. |
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http://www.frontiernet.net/~prof_tcarr/BCD/BDC.html
(599 words)
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| | 5103 |
| | A code in which a string of four binary digits (bits) represents a decimal number. | | | A byte can be used to represent 00-99 decimal | | | For example, incrementing 9 (0000 1001) would result in 10 (0001 0000). |
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http://www.homoexcelsior.com/omega.db/datum/computer_science/binary_coded_decimal/5103
(75 words)
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| | Binary Coded Decimal (BCD) Helper Functions |
| | Binary Coded Decimal (BCD) helper functions provide assistance in working with BCD numbers. | | | Two functions are provided: one to convert to a BCD value to a string and vice versa. | | | The number of octets in the resulting BCD value. |
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http://www.obj-sys.com/v55doc/SRC/group__bcdHelper.shtml
(154 words)
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| | binary-coded decimal system |
| | a numerical system in which each decimal digit is represented by a unique collection of binary digits, not necessarily the same as those used in binary notation. |
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http://www.infoplease.com/dictionary/binary-coded+decimal+system
(44 words)
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| | Add Binary Coded Decimal (w/extend) |
| | The addition is performed using binary coded decimal arithmetic. | | | NAME ABCD -- Add binary coded decimal SYNOPSIS ABCD Dy,Dx ABCD -(Ay),-(Ax) Size = (Byte) FUNCTION Adds the source operand to the destination operand along with the extend bit, and stores the result in the destination location. | | | Data register to data register: The operands are contained in the data registers specified in the instruction. |
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http://www.eecg.toronto.edu/~ece253/68KHTML/abcd.html
(217 words)
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| | Converting a binary coded decimal value to hexadecimal |
| | Converting a binary coded decimal value to hexadecimal | | | Of course, a 32-bit binary cannot hold the full range of values that you can get from 12 decimal digits. | | | The following code will convert the array of BCD digits in variable bcd to a 32-bit binary value in hex. |
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http://www.keil.com/discuss/docs/thread1476.htm
(288 words)
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| | Extended Binary Coded Decimal Interchange Code from FOLDOC |
| | Extended Binary Coded Decimal Interchange Code from FOLDOC | | | the EBCDIC code for "A" is hexadecimal "C1". | | | IBM adapted EBCDIC from punched card code early in the 1960s and promulgated it as a customer control tactic (see connector conspiracy). |
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http://www.instantweb.com/foldoc/foldoc.cgi?query=EBCDIC
(318 words)
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