Questions for discussion : How is the information encoded in the computer? Give

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1. Questions for discussion : How is the information encoded in the computer? Give
2. Coding schemes describe standard coding systems for coding character data (ASCII, Unicode).
3. know and understand the purpose of the
4. Character coding schemes use binary patterns to
5. ASCII
6. Слайд 6
7. ASCII normally uses 8 bits (1 byte)
8. http://foxtools.ru/UnicodeThe symbols are represented by 16 pieces
9. There are several versions of unicode, each
10. What do you think is the encoding
11. Fixed point numbersunderstand how binary can be
12. are able to convert negative numbers from
13. Questions for discussion:How are whole decimal numbers
14. Signed binary numbers0000 0101 (positive)1111 1011 (negative)
15. Слайд 15
16. Fixed point numbers
17. TasksConvert a Negative Denary Number into Binary
18. 0000 1100 = +12 -> 1111 0100
19. Скачать презентанцию

Coding schemes describe standard coding systems for coding character data (ASCII, Unicode).

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Questions for discussion : How is the information encoded in the computer? Give

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Слайд 1Questions for discussion:

How is the information encoded in the computer?
Give

examples from life in which there are two states.
How many

bits are needed to encode traffic light status information?
Determine how many bytes the word
"Goding schemes"

Questions for discussion:How is the information encoded in the computer?Give examples from life in which there are

Слайд 2 Coding schemes
describe standard coding systems for coding character data

(ASCII, Unicode).

Слайд 3know and understand the purpose of the coding system (ASCII,

Unicode);

know and understand the advantages and disadvantages of coding systems;
Expected

results (Success criteria)

know and understand the purpose of the coding system (ASCII, Unicode);know and understand the advantages and disadvantages

Слайд 4Character coding schemes use binary patterns to represent character data

(text).

A common code in all computers ensures that information can

easily be transferred between machines.

Coding schemes

Слайд 7ASCII normally uses 8 bits (1 byte) to store each

character.

ASCII values can take many forms:
Numbers
Letters (capitals and lower case

are separate)
Punctuation (?/|\£$ etc.)
non-printing commands (enter, escape, F1)

ASCII Coding schemes

ASCII normally uses 8 bits (1 byte) to store each character.ASCII values can take many forms:NumbersLetters (capitals

Слайд 8http://foxtools.ru/Unicode
The symbols are represented by 16 pieces per line. From

the top you can see a hexadecimal number from 0

to 16. On the left are similar numbers in hexadecimal form from 0 to FFF.

By connecting the number on the left with the number on top, you can find out the symbol code.
For example: the English letter F is located on line 004, in the column 6: 004 + 6 = symbol code 0046.

Unicode

Слайд 9There are several versions of unicode, each with using a

different number of bits to store data:

Слайд 10What do you think is the encoding system used in

our computers? Why? Explain your answer

Advantages and disadvantages of coding

systems

What do you think is the encoding system used in our computers? Why? Explain your answerAdvantages and

Слайд 11Fixed point numbers
understand how binary can be used to represent

negative and fractional numbers using floating and fixed point.

$Fixed point numbersunderstand how binary can be used to represent negative and fractional numbers using floating and$

Слайд 12are able to convert negative numbers from decimal to binary

system and back;

are able to convert fractional numbers with a

fixed point from decimal to binary system and back;

Expected results (Success criteria)

$are able to convert negative numbers from decimal to binary system and back;are able to convert fractional$

Слайд 13Questions for discussion:

How are whole decimal numbers converted to a

binary number system?

How are binary numbers translated into the decimal

system?

How do you think, how can you translate negative numbers?

Questions for discussion:How are whole decimal numbers converted to a binary number system?How are binary numbers translated

Слайд 14Signed binary numbers
0000 0101 (positive)
1111 1011 (negative)

Слайд 16Fixed point numbers

Слайд 17Tasks
Convert a Negative Denary Number into Binary Twos Complement

-12

Convert the following two's complement number into denary 0001

1011

Converting from denary to binary fractions 7.5

Convert these binary fractions into denary: 0111.0100

Additional tasks
Converting from denary to binary fractions -34.5

Converting from denary to binary fractions 4.5625

Convert the following two's complement number into denary 1111 1111

Convert these binary fractions into denary: 1011.1001