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..
