{"id":6422,"date":"2025-07-15T13:34:48","date_gmt":"2025-07-15T13:34:48","guid":{"rendered":"https:\/\/functiontranslator.com\/bitou\/"},"modified":"2021-02-26T08:02:42","modified_gmt":"2021-02-26T08:02:42","slug":"bitor","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/fr\/bitor\/","title":{"rendered":"BITOU"},"content":{"rendered":"

Dans cet article, nous allons explorer la fonction BITOU<\/strong> de Microsoft Excel et Google Sheets, qui est utilis\u00e9e pour r\u00e9aliser des op\u00e9rations de \u00ab\u00a0ou inclusif\u00a0\u00bb sur les repr\u00e9sentations binaires de deux nombres entiers. Cette fonction est particuli\u00e8rement utile pour ceux qui travaillent dans le domaine de l’informatique ou pour des analyses n\u00e9cessitant une manipulation au niveau du bit.<\/p>\n

Syntaxe et exemples<\/h2>\n

La syntaxe de la fonction BITOU est la suivante :<\/p>\n

BITOU(nombre1, nombre2)<\/code><\/pre>\n
o\u00f9 nombre1<\/code> et nombre2<\/code> d\u00e9signent les nombres sur lesquels vous souhaitez appliquer l’op\u00e9ration OR bit \u00e0 bit.<\/p>\n
Exemple :<\/p>\n\n\n\n
Formule<\/th>\nValeur<\/th>\nDescription<\/th>\n<\/tr>\n
=BITOU(12, 25)<\/code><\/td>\n29<\/td>\nL’op\u00e9ration \u00ab\u00a0ou inclusif\u00a0\u00bb entre 1100 (12 en binaire) et 11001 (25 en binaire) donne 11101, qui correspond \u00e0 29 en d\u00e9cimal.<\/td>\n<\/tr>\n<\/table>\n
Dans cet exemple, la fonction BITOU analyse les repr\u00e9sentations binaires des nombres, en alignant les bits et en appliquant un OR logique \u00e0 chaque paire de bits.<\/p>\n
Applications pratiques<\/h2>\n
Cr\u00e9ation de masques pour les syst\u00e8mes de permissions<\/h4>\n
Les syst\u00e8mes de contr\u00f4le d\u2019acc\u00e8s utilisent souvent des bits pour activer ou d\u00e9sactiver certaines permissions. Imaginons un syst\u00e8me o\u00f9 :<\/p>\n
    \n
  • Bit 1 contr\u00f4le l’acc\u00e8s en lecture<\/li>\n
  • Bit 2 contr\u00f4le l’acc\u00e8s en \u00e9criture<\/li>\n
  • Bit 3 contr\u00f4le l’acc\u00e8s \u00e0 la suppression<\/li>\n<\/ul>\n
    Pour cr\u00e9er un masque de permission autorisant l’acc\u00e8s en lecture (bit 1) et en suppression (bit 3), mais interdisant l’acc\u00e8s en \u00e9criture, on utiliserait :<\/p>\n
    =BITOU(1, 4) # en binaire, 1 est 001 et 4 est 100. Le r\u00e9sultat est 101, soit le nombre 5 en d\u00e9cimal.<\/code><\/pre>\n
    Les permissions r\u00e9sultantes autorisent la lecture et la suppression, mais excluent l’\u00e9criture.<\/p>\n
    Interop\u00e9rabilit\u00e9 avec des logiciels qui manipulent les donn\u00e9es au niveau du bit<\/h4>\n
    Consid\u00e9rons un sc\u00e9nario de communication o\u00f9 des paquets de donn\u00e9es sont re\u00e7us avec des indicateurs sous forme de bits. Vous pourriez avoir besoin de combiner ces indicateurs provenant de diff\u00e9rentes sources afin de d\u00e9terminer l’\u00e9tat global du syst\u00e8me.<\/p>\n
    Supposons la r\u00e9ception d’un paquet avec le bit d’\u00e9tat principal \u00e0 00001010 (10 en d\u00e9cimal) et un autre paquet avec le bit d’\u00e9tat secondaire \u00e0 00000101 (5 en d\u00e9cimal). Pour obtenir l’indication globale, vous pouvez utiliser :<\/p>\n
    =BITOU(10, 5) # Le r\u00e9sultat est 00001111, soit 15 en d\u00e9cimal.<\/code><\/pre>\n
    Cette op\u00e9ration vous donne un aper\u00e7u combin\u00e9 des indicateurs des deux paquets, illustrant ainsi la flexibilit\u00e9 de la fonction BITOU pour g\u00e9rer et manipuler des donn\u00e9es au niveau des bits dans diverses applications techniques et informatiques.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Renvoie un OU binaire de 2 nombres<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[316],"tags":[],"class_list":["post-6422","post","type-post","status-publish","format-standard","hentry","category-ingenierie"],"acf":[],"yoast_head":"\nFonction BITOR (BITOU) dans Excel : comment \u00e7a marche, exemples et syntaxe<\/title>\n<meta name=\"description\" content=\"Pr\u00e9sentation de la fonction BITOR (BITOU) d\u2019Excel et Google Sheets. 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