e-book Software support, encoding binary numbers

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A binary-to-text encoding is encoding of data in plain text. More precisely, it is an encoding of Please help improve it or discuss these issues on the talk page. Many computer programs came to rely on this distinction between seven-bit text and number of bits in the input and the number of bits in the encoded output.‎Description · ‎Encoding plain text · ‎Encoding standards.
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If you were to look at the file as a computer looks at it, you would find that each byte contains not a letter but a number -- the number is the ASCII code corresponding to the character see below. So on disk, the numbers for the file look like this:.

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The first 32 values 0 through 31 are codes for things like carriage return and line feed. The space character is the 33rd value, followed by punctuation, digits, uppercase characters and lowercase characters. To see all values, check out Unicode. How to Uninstall Programs in Windows. How does JavaScript work and how can I build simple calculators with it?

The circuits in a computer's processor are made up of billions of transistors.


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A transistor is a tiny switch that is activated by the electronic signals it receives. The digits 1 and 0 used in binary reflect the on and off states of a transistor.

Computer programs are sets of instructions. Each instruction is translated into machine code - simple binary codes that activate the CPU. Programmers write computer code and this is converted by a translator into binary instructions that the processor can execute. All software , music, documents, and any other information that is processed by a computer, is also stored using binary.

Everything on a computer is represented as streams of binary numbers.

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These encodings are necessary for transmission of data when the channel does not allow binary data such as email or NNTP or is not 8-bit clean. The ASCII text-encoding standard uses unique values 0— to represent the alphabetic, numeric, and punctuation characters commonly used in English , plus a selection of control codes which do not represent printable characters.

In contrast, most computers store data in memory organized in eight-bit bytes. Files that contain machine-executable code and non-textual data typically contain all possible eight-bit byte values. Many computer programs came to rely on this distinction between seven-bit text and eight-bit binary data, and would not function properly if non-ASCII characters appeared in data that was expected to include only ASCII text.

For example, if the value of the eighth bit is not preserved, the program might interpret a byte value above as a flag telling it to perform some function. It is often desirable, however, to be able to send non-textual data through text-based systems, such as when one might attach an image file to an e-mail message.

Binary Numbers and Base Systems as Fast as Possible

To accomplish this, the data is encoded in some way, such that eight-bit data is encoded into seven-bit ASCII characters generally using only alphanumeric and punctuation characters—the ASCII printable characters. Upon safe arrival at its destination, it is then decoded back to its eight-bit form.

How does a computer convert text into binary or 0's and 1's?

This process is referred to as binary to text encoding. Binary-to-text encoding methods are also used as a mechanism for encoding plain text. For example:. By using a binary-to-text encoding on messages that are already plain text, then decoding on the other end, one can make such systems appear to be completely transparent. The table below compares the most used forms of binary-to-text encodings.

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The efficiency listed is the ratio between number of bits in the input and the number of bits in the encoded output. A series of small English words is easier for humans to read, remember, and type in than decimal or other binary-to-text encoding systems. Some of these encoding quoted-printable and percent encoding are based on a set of allowed characters and a single escape character.