numération Flashcards

1
Q

base 2 -> base 10

A

forme polynomiale

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2
Q

base 10 à base 2

A

division successive sur 2

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3
Q

base 16 -> base 10

A

forme polynomiale

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4
Q

base 16 -> base 2

A

éclatement sur 4 bit

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5
Q

base 2 -> base 16

A

regroupement sur 4 bit

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6
Q

3 manieres de signer les nombres?

A

signe/ valeur absolue
complément à 1
complément à 2

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7
Q

signe/ valeur absolue?

A

si le nombre est positif on met 0 comme le MSB

sinon 1 comme MSB

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8
Q

complément à 2

A

parcourir le nombre du LSB jusqu’au premier bit “1” et inverser ce qui vient aprés

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9
Q

a-b=?

-a-b=?

A

a+CA2(b)

CA2(a)+CA2(b)

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10
Q

comment éviter le overflow

A

augmenter la taille des nombres

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