Questions tagged [ascii]

American Standard Code for Information Interchange is a character-encoding scheme based on the ordering of the English alphabet. ASCII codes represent text in computers and devices that use text. It includes definitions for 128 characters - 94 printable and 33 non-printable.

ASCII (American Standard Code for Information Interchange) is a character encoding of eight bits based on the English alphabet. ASCII codes represent text in computers, communications equipment, among other devices that work with text. Developed since 1960, most of the modern character encodings have inherited as a base.

The code defines 256 characters, completely filling the eight bits available. Of these, 33 are not printable, such as control characters not currently usable for text editing, but widely used in communication devices, which affect the processing of the text. Except for the space character, the rest is composed of printable characters.

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Is it possible to create a QR code using text?

QR codes I have seen are mostly image files. But can you create QR codes using plain text? For example ASCII and UTF-8 have black boxes as characters. Can I use those together with spaces to create a QR code?
MCK
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Show hexadecimal/ASCII codes on Notepad++ 6.3

Is there a way to show the hexadecimal/ASCII for all text showing in the editor? I use Windows XP and Notepad++ 6.3
mpajoh
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What is the '¤' character?

Lately I've started wondering about the ¤ character which is shift+4 on my Norwegian keyboard (it's also present on several others, including the U.S. International keyboard layout). I've never seen a use for it, yet for some reason someone decided…
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What are the differences between Linux and Windows .txt files (Unicode encoding)?

I am only using the 128 character set defined in the original ANSI standard. But as a whole how are the files implemented differently. I am not concerned with the display, i.e. if a tab is displayed with 6 or 8 characters but the actual internal…
user73919
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How can I type non-printable ASCII characters in Mac OS X Terminal?

To communicate with a serial-type device over a Telnet socket, I need to type the null character (ASCII 0) and all other non-printable ASCII characters. On Windows, you hold Alt and type the ASCII code. How do I do this on Mac OS X?
davidcann
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ASCII Code for the TAB Character? (Want to be able to input tabs into a web page textbox)

As I'm sure that pretty much everyone on here is aware the "Tab" key when used on a webpage simply jumps to the next element on the page; whether is be a checkbox, radio selector, button, another textbox, a link, etc. What I am hoping to do is…
Sootah
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What character encodings were used before 1963?

It is said that the first character encodings, ASCII and EBCDIC, appeared in 1963. My question: What character encodings preceded them? Did computer process characters before 1963? In particular, compilers for first high-level programming languages…
DrStrangeLove
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How can I identify non-ASCII characters from the shell?

Is there a simple way to print all non-ASCII characters and the line numbers on which they occur in a file using a command line utility such as grep, awk, perl, etc? I want to change the encoding of a text file from UTF-8 to ASCII, but before doing…
user001
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How to type smiley face ASCII☺?

How to type smiley face ASCII ☺ ? P.S I copy pasted ☺ from a site. ☺
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What do the first 32 characters of the ascii table do?

The first 32 characters of the ASCII table (0x00 - 0x1F) are all of the non-printable characters (with the exception of 'DEL' which comes at the end of the table). What are these used for, other than borking your terminal when you cat a binary…
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Why does [ALT+224] return Ó instead of alpha?

I'm on WIN 7. I found that windows is using ANSI, not ASCII. So when I type ALT + 224 i get Ó, instead of α. To get α I have to manually copy it from the windows character map every time I want to use it. As you can imagine, this gets very tedious…
irikkkkk
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Why are there separate fixed-width characters for 0-9 in Japanese, compared to the typical 0-9?

Japanese (日本語) -0123456789 Typical ASCII for everywhere else - 0 1 2 3 4 5 6 7 8 9 Why was there a need to create a separate character set for the same numerals?
Zaenille
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How to turn off ALT + numeric keypad ASCII symbol insertion?

I prefer to use the cursor keys on the numeric keypad with Num Lock turned off. This is fine most of the time but in Eclipse it's causing problems with some of the shortcuts, e.g. Alt+Up/Down to move lines around and Alt+Left to navigate backwards…
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Convert tab separated values to ASCII table

What is the most efficient way to convert tab separated data such as this: a b c d cat NULL NULL NULL NULL NULL NULL NULL NULL d d NULL NULL c NULL c NULL NULL c d c; d NULL b NULL NULL …
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"file" command yields "ASCII text, with no line terminators", unless I first edit the file in vim

I am experimenting a strange behaviour which I don't know how to solve. I will explain the scenario: From a Python script I'm getting a json from a simple application hosted on parse. Once I get the text, I get a sentence from it and save it to a…
cor
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