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[كوكو شانيل]

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ويسعدك ياارب =)

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إجابة أول سؤال :

1. A number system shows how a number can be represented using distinct symbols.

2. In a positional number system, the position of a symbol determines the value it

represents. In a nonpositional number system each symbol has a value but the position

of a symbol normally has no relation to its value; the value of each symbol is

fixed.

3. The base (or radix) is the total number of symbols used in a positional number system.

4. The decimal system is a positional number system that uses ten symbols to represent

a number. The word decimal is derived from the Latin root decem (ten) or decimalis

(related to ten). In the decimal system, the base is 10.

5. The binary system is a positional number system that uses two symbols (0 and 1)

to represent a number. The word binary is derived from the Latin root bini (two by

two) or binarius (related to two). In the binary system, the base is 2.

6. The octal system is a positional number system that uses eight symbols to represent

a number. The word octal is derived from the Latin root octo (eight) or octalis

(related to eight). In the octal system, the base is 8.

7. The hexadecimal system is a positional number system with sixteen symbols. The

word hexadecimal is derived from the Greek root hex (six) and the Latin root

decem (ten). To be consistent with decimal and binary, it should have been called

sexadecimal, from Latin roots sex and decem. In the hexadecimal system, the base

is 16.

8. Conversion is easy because there is a direct relationship between the two systems (see

the answer to question 9).

9. Four bits in binary is one hexadecimal digit.

10. Three bits in binary is one octal digit.

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إجابة السؤال التاني :



* : دي أعملوها علامة ضرب مو ستار زي ما أنا عاملة .



( 1 * 2 أس سالب ثلاثة + 1 * 2 أس سالب اثنين + 0 * 2 أس سالب واحد + 0 * 2 أس صفر + 0 * 2 أس واحد + 1 * 2 أس اثنين + 1 * 2 أس ثلاثة + 0 * 2 أس أربعة + 1 * 2 أس خمسة )



= ( 1 على 8 + 1على 4 + 0 + 0 + 0 + 4 + 8 + 0 + 23 )



= 44.375 " أتأكدوا من الناتج لأني حليتو بدون آلة فما أعرف صح ولا .. ض1 "

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إجابة السؤال الثالث :



( 1 * 16 أس سالب اثنين + 14 * 16 أس سالب واحد + 14 * 16 أس صفر + 5 * 16 أس واحد + 3 * 16 أس اثنين )



= 862.90625 " كمان أتأكدوا من الناتج "

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إجابة السؤال الرابع :



( 3 * 8 أس سالب اثنين + 6 * 8 أس سالب واحد + 2 * 8 أس صفر + 1 * 8 أس واحد + 3 * 8 أس اثنين + 5 * 8 أس ثلاثة )



= 2762.79688


هذـآ والله أعلم ،،



بالتوفييق ^^