Laundry washing or washing/drying machine comprising: - a wash tub, - a microphone suitable for transducing the voice of a user in electrical signals and apt to receive by the user, information regarding the items to be washed; - a control unit which is in communication with said microphone, whereby said control unit comprises: - memory means containing at least one set of washing programs and instructions for controlling the operation of said laundry washing or washing/drying machine, - data management means configured for acquiring information about the laundry items introduced into the wash tub and for selecting a washing program from said set of washing programs on the basis of said information about the laundry items, - output means (5, 6) which are in communication with the control unit, whereby the microphone is apt to receive essential information, specifying for each item to be washed and which the user introduces into the wash tub, a typology, such as bed linen, shirts and underwear, and a description of the characteristics of the items to be washed, in particular the type of fabric, the degree of soil, the color and its intensity, wherein said memory means is apt to memorize said essential information and wherein the data management means is configured for using said essential information for determining the most appropriate washing program among said set of washing programs, whereby the most appropriate washing program is chosen taking into account the singularly specified essential information of the items to be washed when they are introduced in said wash tub, and wherein the data management means is also configured for reporting to the user, by means of said output means (5, 6), the presence of at least a conflicting laundry item into the wash tub, after having determined on the basis of said essential information which conflicting laundry item is unsuitable to be washed by means of the selected washing program. - a wash tub, - a microphone suitable for transducing the voice of a user in electrical signals and apt to receive by the user, information regarding the items to be washed; - a control unit which is in communication with said microphone, whereby said control unit comprises: - memory means containing at least one set of washing programs and instructions for controlling the operation of said laundry washing or washing/drying machine, - data management means configured for acquiring information about the laundry items introduced into the wash tub and for selecting a washing program from said set of washing programs on the basis of said information about the laundry items, - output means (5, 6) which are in communication with the control unit, whereby the microphone is apt to receive essential information, specifying for each item to be washed and which the user introduces into the wash tub, a typology, such as bed linen, shirts and underwear, and a description of the characteristics of the items to be washed, in particular the type of fabric, the degree of soil, the color and its intensity, wherein said memory means is apt to memorize said essential information and wherein the data management means is configured for using said essential information for determining the most appropriate washing program among said set of washing programs, whereby the most appropriate washing program is chosen taking into account the singularly specified essential information of the items to be washed when they are introduced in said wash tub, and wherein the data management means is also configured for reporting to the user, by means of said output means (5, 6), the presence of at least a conflicting laundry item into the wash tub, after having determined on the basis of said essential information which conflicting laundry item is unsuitable to be washed by means of the selected washing program.