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Arnel Lampios

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Jul 7, 2012, 6:37:13 AM7/7/12
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1.Binary Number System


Definition - What does Binary Number System mean?

The binary number system is a numbering system that represents numeric values using two unique digits (0 and 1). Mosting computing devices use binary numbering to represent electronic circuit voltage state, (i.e., on/off switch), which considers 0 voltage input as off and 1 input as on.

This is also known as the base-2 number system, or the binary numbering system.

Techopedia explains Binary Number System

Microcontrollers only use binary logic in computing. Compare this to the decimal numbering system, which is comprised of 10 unique digits (0-9). For example, a user input of 345 (in decimals) is 101011001 in binary form.


2.decimal number system


Part of the Computing fundamentals glossary:
Decimal is a term that describes the base-10 number system, probably the most commonly used number system. The decimal number system consists of ten single- digit numbers: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. The number after 9 is 10. The number after 19 is 20 and so forth. Additional powers of 10 require the addition of another positional digit.
In computing, the binary , octal , or hexadecimal number system may be used instead of the decimal system. All these schemes have a number of digits that is a power of 2. This is an advantage in systems that use high and low digital states.


Definition

3.octal number system


Part of the Computing fundamentals glossary:
Octal (pronounced AHK-tuhl , from Latin octo or "eight") is a term that describes a base-8 number system. An octal number system consists of eight single-digit numbers: 0, 1, 2, 3, 4, 5, 6, and 7. The number after 7 is 10. The number after 17 is 20 and so forth.

Know-IT-All

In computer programming, the octal equivalent of a binary number is sometimes used to represent it because it is shorter.

4.hexadecimal number system


Hexadecimal describes a base-16 number system. That is, it describes a numbering system containing 16 sequential numbers as base units (including 0) before adding a new position for the next number. (Note that we're using "16" here as a decimal number to explain a number that would be "10" in hexadecimal.) The hexadecimal numbers are 0-9 and then use the letters A-F. We show the equivalence of binary, decimal, and hexadecimal numbers in the table below.
Hexadecimal is a convenient way to express binary numbers in modern computers in which a byte is almost always defined as containing eight binary digits. When showing the contents of computer storage (for example, when getting a core dump of storage in order to debug a new computer program or when expressing a string of text characters or a string of binary values in coding a program or HTML page), one hexadecimal digit can represent the arrangement of four binary digits. Two hexadecimal digits can represent eight binary digits, or a byte.




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