Iran System encoding standard was an 8-bit character encoding

Character encoding

A character encoding system consists of a code that pairs each character from a given repertoire with something else, such as a sequence of natural numbers, octets or electrical pulses, in order to facilitate the transmission of data through telecommunication networks or storage of text in...

 scheme and was created by Iran System corporation for Persian language

Persian language

Persian is an Iranian language within the Indo-Iranian branch of the Indo-European languages. It is primarily spoken in Iran, Afghanistan, Tajikistan and countries which historically came under Persian influence...

 support. This standard was in use in Iran

Iran

Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

 in DOS

DOS

DOS, short for "Disk Operating System", is an acronym for several closely related operating systems that dominated the IBM PC compatible market between 1981 and 1995, or until about 2000 if one includes the partially DOS-based Microsoft Windows versions 95, 98, and Millennium Edition.Related...

-based programs and after introduction of Microsoft codepage 1256

Windows-1256

Windows-1256 is a code page used to write Arabic under Microsoft Windows.  This code page is not compatible with ISO 8859-6 and MacArabic encodings....

 this standard became obsolete. However some windows and DOS programs using this encoding are still in use and some windows fonts with this encoding exist. Now most programs use codepage 1256 or Unicode

Unicode

Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...

.

Code page layout

Only the upper half (128–255) of the table is shown, the lower half (0–127) being plain ASCII

ASCII

The 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, communications equipment, and other devices that use text...

. This character set encodes certain presentation forms separately.

	.0	.1	.2	.3	.4	.5	.6	.7	.8	.9	.A	.B	.C	.D	.E	.F
															*
			*	**	*	**	*	**	*	**	*	**	*	**	*	**
	*	**
		*	**	*	**	*	**	*	**	*	**	*	**	*	**	*
	**	*	*	**	*	**	*	**		*					**
	.0	.1	.2	.3	.4	.5	.6	.7	.8	.9	.A	.B	.C	.D	.E	.F

*The code point given is for the isolated form, the final form is also encoded.

**The code point given is for the initial form, the medial form is also encoded.

• Iran system charmap.png