This thesis presents the results of multiparadigm hardware description language design. At the beginning, the basics terms from the area of modelling and simulation are introduced, with emphasis on hardware modelling and simulation. The survey of the programming paradigms is given together with their main characteristics. Hardware description languages (HDL) and their features are described. The differences between HDLs and general purpose programming languages are stressed. The main HDLs in practical use are described. HDLs based on nonimperative paradigms are also described. Possible benefits of a multiparadigm approach in hardware modelling are estimated. The most important characteristics of programming languages, and the basic principles of programming language design are given. The main decisions concerning the features and possibilities of the new language are made. Ideas and concepts of the new language (named TL) are described. TL is multiparadigm language that incorporates imperative, object oriented, and functional paradigms. It also comprises all the necessary abilities for hardware description. The main language features of TL are presented in details. Notions that are usually separate in another programming languages are abstracted and unified into a single notion of TL-object. In that way the problem of accumulation of notions from different paradigms is avoided. Various conventional features are reinterpreted from the aspect of TL-objects. Several hardware descriptions are made by using TL. These models are compared with the adequate models written in the existing HDLs. The features, advantages, and disadvantages of TL are critically analysed and the possible directions for further improvements and research are given.