Accessing Extended ASCII character set

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Accessing the extended ASCII character set can be done using specific keystrokes on both DOS and Windows systems. In DOS and Windows, holding down the <Alt> key while typing the decimal number on the keypad allows users to input characters, such as <Alt>0241 for ñ. On Mac, the Option key combined with other keys enables access to various characters, like Option + Shift + a for a special character. Additionally, users can utilize the character map in Windows or copy and paste characters from ASCII websites. These methods provide straightforward ways to access and use extended ASCII characters across different platforms.
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For those who are interested in accessing extended ASCII character set.

In DOS:
Hold down the <Alt> key while typing the decimal number on the keyboard keypad. (Example: <Alt>178)

In Windows for a DOS character:
Hold down <Alt> while typing the decimal on the keyboard keypad. (Example: <Alt>230)

In Windows for a WIN character:
Hold down <Alt> while typing "0" then the decimal number on the keyboard keypad. (Example: <Alt>0140)

To get ñ

1) activate Num Lock

2) hold down Alt key

3) on number key-pad (usually below Num Lock), type 0241 (while holding down Alt key) and

4) then release Alt key.

so "Alt+0241" gets ñ

See - http://www.evergreen.edu/biophysics/technotes/program/ascii_ext-pc.htm - for Extended ASCII set in Windows/DOS
 
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Extended ASCII set on MAC

For those who are interested in accessing extended ASCII character set on a MAC.

Keystroke Abbreviations:
<op> Option key
<sh> Shift key
<sp> Space bar

Keystroke Examples:
<op><sh>a Hold down the Option, Shift and "a" keys simultaneously, then release the keys.
<op>c Hold down the Option and "c" keys simultaneously, then release.
<op>e E Hold down the Option and "e" keys simultaneously, release, then type a capital "E".

See - http://www.evergreen.edu/biophysics/technotes/program/ascii_ext-mac.htm - for extended ASCII set.
 
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Under windows you can also use the character map under start->accessories to access the extended ascii characters.
 
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