The 1991 ACM Computing Classification Systemhttps://vocabularyserver.com/acm/91/Computer Applicationshttps://vocabularyserver.com/acm/91/?tema=1051Computing Methodologieshttps://vocabularyserver.com/acm/91/?tema=779Information Systemshttps://vocabularyserver.com/acm/91/?tema=669Mathematics of Computinghttps://vocabularyserver.com/acm/91/?tema=566Theory of Computationhttps://vocabularyserver.com/acm/91/?tema=479Datahttps://vocabularyserver.com/acm/91/?tema=451Softwarehttps://vocabularyserver.com/acm/91/?tema=264Computer Systems Organizationhttps://vocabularyserver.com/acm/91/?tema=178Hardwarehttps://vocabularyserver.com/acm/91/?tema=9General Literaturehttps://vocabularyserver.com/acm/91/?tema=1Computing Milieuxhttps://vocabularyserver.com/acm/91/?tema=1097User Interfaceshttps://vocabularyserver.com/acm/91/?tema=762Systems and Information Theoryhttps://vocabularyserver.com/acm/91/?tema=673SIMULATION AND MODELINGhttps://vocabularyserver.com/acm/91/?tema=1010Security and Protectionhttps://vocabularyserver.com/acm/91/?tema=1173TEXT PROCESSINGhttps://vocabularyserver.com/acm/91/?tema=1035INFORMATION INTERFACES AND PRESENTATIONhttps://vocabularyserver.com/acm/91/?tema=753Implementationhttps://vocabularyserver.com/acm/91/?tema=1006Hardware Architecturehttps://vocabularyserver.com/acm/91/?tema=875Graphics Systemshttps://vocabularyserver.com/acm/91/?tema=884Compression (Coding)https://vocabularyserver.com/acm/91/?tema=941Combinatoricshttps://vocabularyserver.com/acm/91/?tema=643Graph Theoryhttps://vocabularyserver.com/acm/91/?tema=649conglomeradohttps://vocabularyserver.com/acm/91/?tema=1220Formal Languageshttps://vocabularyserver.com/acm/91/?tema=558Grammars and Other Rewriting Systemshttps://vocabularyserver.com/acm/91/?tema=552Mathematical Logichttps://vocabularyserver.com/acm/91/?tema=543Studies of Program Constructshttps://vocabularyserver.com/acm/91/?tema=535Semantics of Programming Languageshttps://vocabularyserver.com/acm/91/?tema=531Specifying and Verifying and Reasoning about Programshttps://vocabularyserver.com/acm/91/?tema=524