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F-68
k Limites de la mémoire
La calculatrice contient des zones de mémoire appelées
piles
où sont
sauvegardées temporairement des valeurs, commandes et fonctions ayant un
ordre de priorité de calcul inférieur. La
pile numérique
a 10 niveaux et la
pile de
commandes
a 24 niveaux, comme indiqué sur l’illustration suivante.
Une erreur de pile (Stack ERROR) se produit lorsque le calcul que vous effectuez
entraîne le dépassement d’une pile.
Problèmes de piles à garder en mémoire
•Dans le mode CMPLX, chaque valeur saisie utilise deux niveaux de la pile
numérique, la valeur saisie pouvant être un nombre réel ou un nombre complexe.
Cela signifie que la pile numérique n’a effectivement que cinq niveaux dans le
mode CMPLX.
Le mode MATRIX
utilise sa propre
pile de matrices
, qui s’emploie avec la pile
numérique générale. La pile de matrices a trois niveaux. Lorsque vous effectuez
un calcul comprenant une matrice, un niveau de la pile de matrices est utilisée
pour stocker le résultat. L’élévation au carré, au cube ou l’inversion d’une matrice
utilise aussi un niveau de la pile de matrices.
Le mode VECTOR utilise sa propre
pile de vecteurs
, qui s’emploie avec la pile
numérique générale. La pile de vecteurs a cinq niveaux. L’emploi de la pile de
vecteurs obéit aux mêmes règles que la pile de matrices, comme indiqué ci-
dessus.
1
2
3
45
1 2 3 4 5 6
7
Pile numérique Pile de commandes
1
2
3
4
5
2
3
4
5
4
҂
ѿ
҂
ѿ
1
2
3
4
5
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7
70


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