Tuesday, 12 March 2013

ICT - Exercise5 : Introduction to Binary Coding


 Introduction to Binary Coding



1. What is the first character code?
A. Morse Code
B. Hollerith Code
C. American Standard Code for Information Interchange (ASCII)

2. The original ASCII used a total of ______ to represent characters (letters, numbers, and punctuation mark)
A. 7bits
B. 9bits
C. 128bits

3. Seven bits allow the computer to encode a total of how many characters?
A. 14
B. 128
C. 256

4. In what year was ASCII proposed by ANSI?
A. 1945
B. 1963
C. 1971

5. A teleprinter uses a ______ Bardout codes.
A. 3bit
B. 5bit
C. 7bit

6. What are the codes used by computers to send and receive information?
A. Binary code
B. Baudot code
C. Input and output

7. What is the character code for encoding alphanumeric data on the "punched card”?
A. Morse code
B. Holerith code
C. Baudot code

8. What is the main reason for using ASCII?
A. To process textual data
B. To achieve compatibility between various types of data processing
C. To purchase components those are compatible with their computer configurations.


9. When you press a key on a board, the electronic signal is converted into a binary form that the computer can process and stored in?
A. Memory
B. Character code
C. Computer code

10. Character codes for encoding alphanumeric data on the punched card was created by
A. Morse
B. Hollerith
C. Baudot

11. 16 bits is equivalent to ______bytes.
A. 2
B. 3
C. 8
D. 218

12. ____________ bit allows the computer to encode characters, for the numbers 09,
Uppercase and lowercase letters AZ,and a few punctuation symbols.
A. 7
B. 128
C. 156
D. 218

13. What is the ASCII code for number 1?
A. 00100001
B. 01011000
C. 01010100
D. 01000100

14. The teleprinter was invented by ________.
A. Morse
B. Bardout
C. Marconi
D. Hollerith

15. ____________ is the world’s first binary character codes for processing textual data.
A. Morse Code
B. Bardout Code
C. Hollerith Code
D. ComputerCode

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