Saturday, February 13
Number Systems, Base Conversions, and Computer Data Representation
Decimal and Binary Numbers
When we write decimal (base 10) numbers, we use a positional notation system. Each digit is multiplied by an appropriate power of 10 depending on its position in the number:
For example:
843 = 8 x 1022 + 4 x 1011 + 3 x 1000
= 8 x 100 + 4 x 10 + 3 x 1
= 800 + 40 + 3
For whole numbers, the rightmost digit position is the one’s position (100o = 1). The numeral in that position indicates how many ones are present in the number. The next position to the left is ten’s, then hundred’s, thousand’s, and so on. Each digit position has a weight that is ten times the weight of the position to its right.
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When we write decimal (base 10) numbers, we use a positional notation system. Each digit is multiplied by an appropriate power of 10 depending on its position in the number:
For example:
843 = 8 x 1022 + 4 x 1011 + 3 x 1000
= 8 x 100 + 4 x 10 + 3 x 1
= 800 + 40 + 3
For whole numbers, the rightmost digit position is the one’s position (100o = 1). The numeral in that position indicates how many ones are present in the number. The next position to the left is ten’s, then hundred’s, thousand’s, and so on. Each digit position has a weight that is ten times the weight of the position to its right.
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Ho to Convert text to binary?
Ho to Convert text to binary?
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Example 1 I give My name called "Robel "
How Computer Understand My Name (Robel)??????
Solution
My Name "Robel" = "01010010, 01101111, 01100010, 01100101, 01101100" In Binary
> R = "01010010"
> o = "01101111"
> b = "01100010"
> e = "01100101"
> l = "01101100"
Understand? Please Comment it
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Example 1 I give My name called "Robel "
How Computer Understand My Name (Robel)??????
Solution
My Name "Robel" = "01010010, 01101111, 01100010, 01100101, 01101100" In Binary
> R = "01010010"
> o = "01101111"
> b = "01100010"
> e = "01100101"
> l = "01101100"
Understand? Please Comment it
Click Me for Check
computer science program national level harmonized ...
NATIONAL LEVEL HARMONIZED MODULAR. CURRICULUM ... COMPUTER SCIENCE PROGRAM CURRICULUM, July 2013. ` Imprint. Addis Ababa, Ethiopia.
NATIONAL LEVEL HARMONIZED MODULAR. CURRICULUM ... COMPUTER SCIENCE PROGRAM CURRICULUM, July 2013. ` Imprint. Addis Ababa, Ethiopia.
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COMPUTER SCIENCE CURRICULUM FOR SCHOOL
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Structure and focus: This curriculum is modelled directly on the UK National Curriculum Programmes of Study3 , in the hope that it may thereby have a familiar “shape”:
Section 1: Importance of Computer Science at school.
Section 2: Key Concepts that arise repeatedly in Computer Science.
Section 3: Key Processes that pupils should be able to carry out.
Section 4: Range and Content of what pupils should know.
Section 5: Level descriptions of Computer Science attainment.
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Structure and focus: This curriculum is modelled directly on the UK National Curriculum Programmes of Study3 , in the hope that it may thereby have a familiar “shape”:
Section 1: Importance of Computer Science at school.
Section 2: Key Concepts that arise repeatedly in Computer Science.
Section 3: Key Processes that pupils should be able to carry out.
Section 4: Range and Content of what pupils should know.
Section 5: Level descriptions of Computer Science attainment.
Read More by click
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