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To further increase the speed of computation, this paper aims to design and implement digital circuits entirely within the domain of multi-valued logic. In a fourvalued logic circuit, each wire carries two bits at a time, each logic gate operates two bits at once, and each memory cell records two bits at one time. To make the multi-valued computation possible, this paper describes a simple fourstep process for designing multi-valued circuits to implement any multi-valued functions. The design of a fourvalued adder is provided as an example. This paper also contributes new designs for multi-valued memory and flipflops, which can be extended to be used for infinite-valued or Fuzzy logic circuits, for fully exploiting many-valued logic and fuzzy paradigm in hardware. The multi-valued circuit design methodology and the multi-valued memory provide the necessary and sufficient tools and components for designing multi-valued systems entirely within the domain of multi-valued logic. 

Automatic classification of Web pages is an effective way to organise the vast amount of information and to assist in retrieving relevant information from the Internet. Although many automatic classification systems have been proposed, most of them ignore the conflict between the fixed number of categories and the growing number of Web pages being added into the systems. They also require searching through all existing categories to make any classification. This article proposes a dynamic and hierarchical classification system that is capable of adding new categories as required, organising the Web pages into a tree structure, and classifying Web pages by searching through only one path of the tree. The proposed single-path search technique reduces the search complexity from u(n) to u(log(n)). Test results show that the system improves the accuracy of classification by 6 percent in comparison to related systems. The dynamic-category expansion technique also achieves satisfying results for adding new categories into the system as required.

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