Character sets

       

Tasks-Character Coding

1. A) What does ASCII stand for?
        American standard communication information interchange

 B) What is it used for?
      To create a more universal form of coding information mapping the same characters to certain binary numbers.

2. A) How many characters can you have with 7 bit ASCII?

    128

B) What is 8 bit ASCII known as? How many characters can you have with this?
You can have 256 characters

3. What is the ASCII denary character codes for A, C, E?
     A=65  C=67   E=69

4. How do we represent all of the characters from for e.g. Arabic / China?
    We use character set called Unicode.

5. What is meant by Parity?
    It is a technique that checks whether data has been lost or written over when it is moved from one place in storage to another or when it is transmitted between computers.

6. Write your name in ASCII (Binary)
1001010  , 1100001  ,  11001101  ,  1100101  ,  1110011

     J                  a                  m                e                   s

7. What is the letter from the ASCII code 80?   P

8. What is the difference in bit pattern from a capital A to a lower case a?
     The second most important bit determines if it is a capital or lower case.   0=A , 1=a.

9. What is Character Set?

     A set of symbols used to convey information.