The orthography of this script reflects the pronunciation of the language.[14] Unlike the Latin alphabet, the script has no concept of letter case.[15] It is written from left to right, has a strong preference for symmetrical rounded shapes within squared outlines, and is recognisable by a horizontal line, known as a शररेख śirorekhā, that runs along the top of full letters.[9] In a cursory look, the Devanāgarī script appears different from other Indic scripts, such as Bengali-Assamese or Gurmukhi, but a closer examination reveals they are very similar except for angles and structural emphasis.[9]
Among the languages using it as a primary or secondary script are Marathi, Pāḷi, Sanskrit,[16] Hindi,[17] Boro, Nepali, Sherpa, Prakrit, Apabhramsha, Awadhi, Bhojpuri, Braj Bhasha,[18] Chhattisgarhi, Haryanvi, Magahi, Nagpuri, Rajasthani, Khandeshi, Bhili, Dogri, Kashmiri, Maithili, Konkani, Sindhi, Nepal Bhasa, Mundari, Angika, Bajjika and Santali.[14] The Devanāgarī script is closely related to the Nandināgarī script commonly found in numerous ancient manuscripts of South India,[19][20] and it is distantly related to a number of southeast Asian scripts.[14]
Devanāgarī is part of the Brahmic family of scripts of India, Nepal, Tibet, and Southeast Asia.[23][24] It is a descendant of the 3rd century BCE Brāhmī script, which evolved into the Nagari script which in turn gave birth to Devanāgarī and Nandināgarī. Devanāgarī has been widely adopted across India and Nepal to write Sanskrit, Marathi, Hindi, Central Indo-Aryan languages, Konkani, Boro, and various Nepalese languages.
Some of the earliest epigraphic evidence attesting to the developing Sanskrit Nāgarī script in ancient India is from the 1st to 4th century CE inscriptions discovered in Gujarat.[10] Variants of script called nāgarī, recognisably close to Devanāgarī, are first attested from the 1st century CE Rudradaman inscriptions in Sanskrit, while the modern standardised form of Devanāgarī was in use by about 1000 CE.[11][25] Medieval inscriptions suggest widespread diffusion of Nāgarī-related scripts, with biscripts presenting local script along with the adoption of Nāgarī scripts. For example, the mid 8th-century Pattadakal pillar in Karnataka has text in both Siddha Matrika script, and an early Telugu-Kannada script; while, the Kangra Jawalamukhi inscription in Himachal Pradesh is written in both Sharada and Devanāgarī scripts.[26]
The Nāgarī script was in regular use by the 7th century CE, and it was fully developed by about the end of first millennium.[8][11] The use of Sanskrit in Nāgarī script in medieval India is attested by numerous pillar and cave-temple inscriptions, including the 11th-century Udayagiri inscriptions in Madhya Pradesh,[27] and an inscribed brick found in Uttar Pradesh, dated to be from 1217 CE, which is now held at the British Museum.[28] The script's prototypes and related versions have been discovered with ancient relics outside India, in places such as Sri Lanka, Myanmar and Indonesia. In East Asia, the Siddhaṃ matrika script (considered as the closest precursor to Nāgarī) was in use by Buddhists.[16][29] Nāgarī has been the primus inter pares of the Indic scripts.[16] It has long been used traditionally by religiously educated people in South Asia to record and transmit information, existing throughout the land in parallel with a wide variety of local scripts (such as Moḍī, Kaithi, and Mahajani) used for administration, commerce, and other daily uses.
Sharada remained in parallel use in Kashmir. An early version of Devanāgarī is visible in the Kutila inscription of Bareilly dated to VS 1049 (992 CE), which demonstrates the emergence of the horizontal bar to group letters belonging to a word.[1] One of the oldest surviving Sanskrit texts from the early post-Maurya period consists of 1,413 Nāgarī pages of a commentary by Patanjali, with a composition date of about 150 BCE, the surviving copy transcribed about 14th century CE.[30]
In the 7th century, under the rule of Songtsen Gampo of the Tibetan Empire, Thonmi Sambhota was sent to Nepal to open marriage negotiations with a Nepali princess and to find a writing system suitable for the Tibetan language. He then invented the Tibetan script based on the Nāgarī used in Kashmir. He added 6 new characters for sounds that did not exist in Sanskrit.[32]
Other scripts closely related to Nāgarī (such as Siddhaṃ) were introduced throughout East and Southeast Asia from the 7th to the 10th centuries CE: notably in Indonesia, Vietnam, and Japan.[33][34]
Most of the Southeast Asian scripts have roots in Dravidian scripts, but a few found in south-central regions of Java and isolated parts of southeast Asia resemble Devanāgarī or its prototypes. The Kawi script in particular is similar to the Devanāgarī in many respects, though the morphology of the script has local changes. The earliest inscriptions in the Devanāgarī-like scripts are from around the 10th century CE, with many more between the 11th and 14th centuries.[35][36]
The letter order of Devanāgarī, like nearly all Brāhmic scripts, is based on phonetic principles that consider both the manner and place of articulation of the consonants and vowels they represent. This arrangement is usually referred to as the varṇamālā ("garland of letters").[41] The format of Devanāgarī for Sanskrit serves as the prototype for its application, with minor variations or additions, to other languages.[42]
The table below shows the consonant letters (in combination with inherent vowel a) and their arrangement. To the right of the Devanāgarī letter it shows the Latin script transliteration using International Alphabet of Sanskrit Transliteration,[52] and the phonetic value (IPA) in Hindi.[53][54]
Table: Consonants with vowel diacritics. Vowels in their independent form on the top and in their corresponding dependent form (vowel sign) combined with the consonant 'k' on the bottom. 'ka' is without any added vowel sign, where the vowel 'a' is inherent.
As mentioned, successive consonants lacking a vowel in between them may physically join as a conjunct consonant or ligature. When Devanāgarī is used for writing languages other than Sanskrit, conjuncts are used mostly with Sanskrit words and loan words. Native words typically use the basic consonant and native speakers know to suppress the vowel when it is conventional to do so. For example, the native Hindi word karnā is written करन (ka-ra-nā).[59] The government of these clusters ranges from widely to narrowly applicable rules, with special exceptions within. While standardised for the most part, there are certain variations in clustering, of which the Unicode used on this page is just one scheme. The following are a number of rules:
The end of a sentence or half-verse may be marked with the "" symbol (called a daṇḍa, meaning "bar", or called a pūrṇa virām, meaning "full stop/pause"). The end of a full verse may be marked with a double-daṇḍa, a "" symbol. A comma (called an alpa virām, meaning "short stop/pause") is used to denote a natural pause in speech.[61][62] Punctuation marks of Western origin, such as the colon, semicolon, exclamation mark, dash, and question mark have been in use in Devanāgarī script since at least the 1900s,[citation needed] matching their use in European languages.[63]
A variety of Unicode fonts are in use for Devanāgarī. These include Akshar,[64] Annapurna,[65] Arial,[66] CDAC-Gist Surekh,[67] CDAC-Gist Yogesh,[68] Chandas,[69] Gargi,[70] Gurumaa,[71] Jaipur,[72] Jana,[73] Kalimati,[74] Kanjirowa,[75] Lohit Devanagari, Mangal,[76] Kokila,[77] ,Preeti,[78] Raghu,[79] Sanskrit2003,[80] Santipur OT,[81] Siddhanta, and Thyaka.[82]
Uttara [companion to Chandas] is the best in terms of ligatures but, because it is designed for Vedic as well, requires so much vertical space that it is not well suited for the "user interface font" (though an excellent choice for the "original field" font). Santipur OT is a beautiful font reflecting a very early [medieval era] typesetting style for Devanagari. Sanskrit 2003[83] is a good all-around font and has more ligatures than most fonts, though students will probably find the spacing of the CDAC-Gist Surekh[67] font makes for quicker comprehension and reading.
A standard transliteration convention was codified in the ISO 15919 standard of 2001. It uses diacritics to map the much larger set of Brāhmic graphemes to the Latin script. The Devanāgarī-specific portion is nearly identical to the academic standard for Sanskrit, IAST.[88]
The International Alphabet of Sanskrit Transliteration (IAST) is the academic standard for the romanisation of Sanskrit. IAST is the de facto standard used in printed publications, like books, magazines, and electronic texts with Unicode fonts. It is based on a standard established by the Congress of Orientalists at Athens in 1912. The ISO 15919 standard of 2001 codified the transliteration convention to include an expanded standard for sister scripts of Devanāgarī.[88]
Compared to IAST, Harvard-Kyoto looks much simpler. It does not contain all the diacritic marks that IAST contains. It was designed to simplify the task of putting large amount of Sanskrit textual material into machine readable form, and the inventors stated that it reduces the effort needed in transliteration of Sanskrit texts on the keyboard.[89] This makes typing in Harvard-Kyoto much easier than IAST. Harvard-Kyoto uses capital letters that can be difficult to read in the middle of words.
ITRANS is a lossless transliteration scheme of Devanāgarī into ASCII that is widely used on Usenet. It is an extension of the Harvard-Kyoto scheme. In ITRANS, the word devanāgarī is written "devanaagarii" or "devanAgarI". ITRANS is associated with an application of the same name that enables typesetting in Indic scripts. The user inputs in Roman letters and the ITRANS pre-processor translates the Roman letters into Devanāgarī (or other Indic languages). The latest version of ITRANS is version 5.30 released in July 2001. It is similar to Velthuis system and was created by Avinash Chopde to help print various Indic scripts with personal computers.[89]
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