Linux Terminal Emulation Graphics capabilities
The most important part of terminal emulation is how it displays information on the monitor. When you hear the phrase ‘‘text mode,’’ the last thing you’d think to worry about is graphics. However, even the most rudimentary dumb terminals supported some method of screen manipulation.
Character sets
All terminals must display characters on the screen (otherwise, text mode would be pretty useless). The trick is in what characters to display, and what codes the Linux system needs to send to display them. A character set is a set of binary commands that the Linux system sends to a monitor to display characters. There are several character sets that are supported by various terminal emulation packages:
• ASCII The American Standard Code for Information Interchange. This character set contains the English characters stored using a 7-bit code, and consists of 128 English letters (both upper and lower case), numbers, and special symbols. This character set was adopted by the American National Standards Institute (ANSI) as US-ASCII. You will often see it referred to in terminal emulators as the ANSI character set.
• ISO-8859-1
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