ok sir. I understood. Thanks for explaining. On 7/24/14, Him Prasad Gautam <drishtibac...@gmail.com> wrote: > hi, > question one:. What is difference between ascii anci > Answer: > For general concept, they both fall under the category as one group > element have different identification number but different group will > use the same number with repeating of those numbers which were already > used by another group. > Question 2: Difference between unicode UTF8 and UTF16? > Answer: > I earlier have explained that letters converted in numbers, numbers > in zero and one. The zero is taken as switch off no supply of > electricity) and one is converted as switch on supply electricity). > Finally every things is converted into how many times on the switch > and how many time off the switch. > Take a real example: > 65 is the code number of the English capital letter A. > If we convert the number 65 into one and zero (binary number) it > becomes 1000001 > Count the number of zero and one here. > There is one at first and at last and rest are zero. > The total digit is seven. > It means switch the first one, switch off the second, third, > fourth,fifth, sixth and switch on the seventh. That is capital A. > This is only background information for your question. > Then what is utf-8 and 16 etc. > This is the span of a binary number. > Take an example: > you can write one as > 1 > 01 > 001 > 0001 > 00001 > 000001 > What is the different among these numbers? > In value all they are one but in digits they are different. > 01 is two digit and 000001 is six digit. > Now go to back again. > each letter of each language of the world have an unique number called > the uni Code. > English Capital has the code 65 but my Nepali ka has 2325. > if both letters converted into zero and one (binary number); A is 7 > digit and my ka may have 12 digit and perhaps your Kannada ka may have > sixteen digit. > Now if we want write all number of equal digit say sixteen; we have to > add nine zeros in front of English A and four in front of my ka but no > thing to add in front of your ka. > In brief, it is a process of maintaining the number with same digit. > If it is smaller than the set span, zero are added in front of it but > keeping the value same. > In conclusion, The bit expresses the length of digit. > question three: what is font convert? > Answer: > Basically it is not a font convert but converting the code number of a > letter. > Remember my earlier example: > English 1, 2, 3, 4, 5, etc. > Russian 1, 2, 3, 4, 5, etc. > It is ASCII system. > In the same example I have written: > English: 1, 2, 3, 4, 5,... > Russian 100, 101, 102, 103, etc > It is Uni Code system. > > Now Font convert means converting ASCII into uni Code numbering system. > In the above example: > Converting Russian 1 into 100, 2 into 101, 3 into 102 etc. etc. > Making the ASCII code letter into uni Code letter > Hence The word Font convert is meaning less from real sense. > > On 7/24/14, Renuka Warriar Edakkunni <eren...@gmail.com> wrote: >> Superb explanation. >> >> Renuka. >> >> On 7/24/14, Siddalingeshwar Ingalagi <ingalagisi...@gmail.com> wrote: >>> hi sir, nice explaination. What is difference between ascii anci and >>> unicode UTF8 and UTF16? and what is font convert? >>> >>> On 7/23/14, Him Prasad Gautam <drishtibac...@gmail.com> wrote: >>>> Hi list, >>>> Many persons usually ask me what is unicode? >>>> Why screen reader work only in Unicode? >>>> Many VI fellows had requested me to make a system which may read >>>> non-uniCode letters which is not possible. >>>> They often complain that sited persons use non-uniCode system which >>>> they have to access. >>>> Here is a reply: >>>> >>>> Let you be clear: >>>> 1. computer only knows every thing in number, no letter, word, or >>>> order. For example, if you press enter key, computer understand it as >>>> 13. number of key. like your roll number in school. >>>> 2. It does not recognize anything except numbers. >>>> 3. Though Computer knows only the numbers; the number must be either >>>> zero or one. two, three , four is not understood by it. >>>> 4. The two, three, four, ten, hundred or billion etc is converted into >>>> a different number that contain zero and one which called binary. >>>> 6. The binary number which contains only zero and one is taken as >>>> follows: >>>> zero means(switch off (no electric supply). >>>> 1 meansswitch on ( electric supply.). >>>> 7. That means computer does switch on and off only, it does not do any >>>> thing more. >>>> 8. The processor speed expressed in hertz means how many times can it >>>> do the switch on and off in one second. >>>> 9. A human being takes few second to on or off a switch, computer does >>>> the same work many billions times in one second. >>>> Now, perhaps you may have understood: >>>> 1. Computer does not recognize any letters. >>>> 2. Instead a letter name like a, b, c, a number of that letter must be >>>> given to it. Like you are called by your roll number by a teacher, or >>>> an immigrant officer called you by your passport number or some one >>>> refered you by your id number but not by your name. >>>> 3. Hope you conclude that in computer letters are dealt in numbers >>>> only but not by their name. >>>> Now the first question begins: >>>> How the letters are given numbers? >>>> What number is given for English alphabet a or for b or for c or for >>>> z or for ka/kha of Hindi, or for alif/bay of urdu? >>>> The numbering system of all letter of all languages of the world is >>>> called unicode. >>>> For example: >>>> Government decided to allocate a id number to all of Indian citizen. >>>> Now the id number can be given in either way: >>>> First method: >>>> Bengal: 1, 2, 3, 4, 5 .... >>>> Orissa: 1, 2, 3, 4, 5, .... >>>> Gujarat:1, 2, 3, 4,5, >>>> Kerala: 1, 2, 3, 4, 5.... >>>> In this method, the id number within a state is not repeated but the >>>> same id number holder is found in another state. >>>> Second method: >>>> Do not repeat the id number in each state. Allocate an unique number >>>> for an Indian citizen. >>>> Now come to the letter numbering system: >>>> This is an example: >>>> English letter: 1, 2, 3, 4, 5, >>>> Russian letter: 1, 2, 3, 4, 5 >>>> Hindi letter: 1, 2, 3, 4, 5, .... >>>> Punjabi letter: 1, 2, 3, 4, 5, ... >>>> Chinese letter: 1, 2, 3, 4, 5 >>>> This method of giving the number is called ASCII system. >>>> Where the letter number is repeated. >>>> Second way: >>>> English lettter: 1, 2, 3, 4, 5, ... upto 99 >>>> Russian letter: 100, 101, 102, 103, 104...upto 199 >>>> Hindi letter: 200, 201, 202, 203, 204... up to 299 >>>> Punjabi letter: 300, 301, 302, 303, ... up to 399. >>>> Chinese letter: 400, 401, 402, 403, 404 >>>> In this method, the letter numbers is not repeated! in different >>>> language. >>>> This is the Unicode system of coding. >>>> Now the final reply: >>>> It is already cleared that computer recognizes a letter by its code >>>> number; if the Unicode system is followed, it recognizes the exact >>>> letter because there is no repeating of the letter code number. >>>> If the letters coded in ASCII encoding, the repeat of number takes >>>> places and computer does not recognizes which language or letter it >>>> belongs. >>>> Take an example: >>>> if you went to a school and asked the headmaster about the performance >>>> of your kid having roll number ten; Can the headmaster exactly judge >>>> which is the student? >>>> Definitely not, because there are many students having roll number ten. >>>> If the school have a roll number system as in unicode; he can >>>> immediately know who is the kid because in Unicode there will be only >>>> one student having roll number ten in the school. >>>> Same case happens to screen reader to recognize the exact letter. >>>> That is why It recognizes if in Unicode but does not if in ASCII code. >>>> >>>> Him Prasad Gautam >>>> Kathmandu, Nepal >>>> >>>> >>>> >>>> Register at the dedicated AccessIndia list for discussing accessibility >>>> of >>>> mobile phones / Tabs on: >>>> http://mail.accessindia.org.in/mailman/listinfo/mobile.accessindia_accessindia.org.in >>>> >>>> >>>> Search for old postings at: >>>> http://www.mail-archive.com/accessindia@accessindia.org.in/ >>>> >>>> To unsubscribe send a message to >>>> accessindia-requ...@accessindia.org.in >>>> with the subject unsubscribe. >>>> >>>> To change your subscription to digest mode or make any other changes, >>>> please >>>> visit the list home page at >>>> http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in >>>> >>>> >>>> Disclaimer: >>>> 1. Contents of the mails, factual, or otherwise, reflect the thinking >>>> of >>>> the >>>> person sending the mail and AI in no way relates itself to its >>>> veracity; >>>> >>>> 2. AI cannot be held liable for any commission/omission based on the >>>> mails >>>> sent through this mailing list.. >>>> >>> >>> >>> >>> Register at the dedicated AccessIndia list for discussing accessibility >>> of >>> mobile phones / Tabs on: >>> http://mail.accessindia.org.in/mailman/listinfo/mobile.accessindia_accessindia.org.in >>> >>> >>> Search for old postings at: >>> http://www.mail-archive.com/accessindia@accessindia.org.in/ >>> >>> To unsubscribe send a message to >>> accessindia-requ...@accessindia.org.in >>> with the subject unsubscribe. >>> >>> To change your subscription to digest mode or make any other changes, >>> please >>> visit the list home page at >>> http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in >>> >>> >>> Disclaimer: >>> 1. Contents of the mails, factual, or otherwise, reflect the thinking of >>> the >>> person sending the mail and AI in no way relates itself to its veracity; >>> >>> 2. AI cannot be held liable for any commission/omission based on the >>> mails >>> sent through this mailing list.. >>> >> >> >> >> Register at the dedicated AccessIndia list for discussing accessibility >> of >> mobile phones / Tabs on: >> http://mail.accessindia.org.in/mailman/listinfo/mobile.accessindia_accessindia.org.in >> >> >> Search for old postings at: >> http://www.mail-archive.com/accessindia@accessindia.org.in/ >> >> To unsubscribe send a message to >> accessindia-requ...@accessindia.org.in >> with the subject unsubscribe. >> >> To change your subscription to digest mode or make any other changes, >> please >> visit the list home page at >> http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in >> >> >> Disclaimer: >> 1. Contents of the mails, factual, or otherwise, reflect the thinking of >> the >> person sending the mail and AI in no way relates itself to its veracity; >> >> 2. AI cannot be held liable for any commission/omission based on the >> mails >> sent through this mailing list.. >> > > > -- > Him Prasad Gautam > Kathmandu, Nepal > > > > Register at the dedicated AccessIndia list for discussing accessibility of > mobile phones / Tabs on: > http://mail.accessindia.org.in/mailman/listinfo/mobile.accessindia_accessindia.org.in > > > Search for old postings at: > http://www.mail-archive.com/accessindia@accessindia.org.in/ > > To unsubscribe send a message to > accessindia-requ...@accessindia.org.in > with the subject unsubscribe. > > To change your subscription to digest mode or make any other changes, please > visit the list home page at > http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in > > > Disclaimer: > 1. Contents of the mails, factual, or otherwise, reflect the thinking of the > person sending the mail and AI in no way relates itself to its veracity; > > 2. AI cannot be held liable for any commission/omission based on the mails > sent through this mailing list.. >
Register at the dedicated AccessIndia list for discussing accessibility of mobile phones / Tabs on: http://mail.accessindia.org.in/mailman/listinfo/mobile.accessindia_accessindia.org.in Search for old postings at: http://www.mail-archive.com/accessindia@accessindia.org.in/ To unsubscribe send a message to accessindia-requ...@accessindia.org.in with the subject unsubscribe. To change your subscription to digest mode or make any other changes, please visit the list home page at http://accessindia.org.in/mailman/listinfo/accessindia_accessindia.org.in Disclaimer: 1. Contents of the mails, factual, or otherwise, reflect the thinking of the person sending the mail and AI in no way relates itself to its veracity; 2. AI cannot be held liable for any commission/omission based on the mails sent through this mailing list..
