Abstract-Human-Computer Speech is gaining momentum as a technique of computer interaction. There has been a recent upsurge in speech based search engines and assistants such as Siri, Google Chrome and Cortana. Natural Language Processing (NLP) techniques such as NLTK for Python can be applied to analyse speech, and intelligent responses can be found by designing an engine to provide appropriate human like responses. This type of programme is called a Chatbot, which is the focus of this study. This paper presents a survey on the techniques used to design Chatbots and a comparison is made between different design techniques from nine carefully selected papers according to the main methods adopted. These papers are representative of the significant improvements in Chatbots in the last decade. The paper discusses the similarities and differences in the techniques and examines in particular the Loebner prizewinning Chatbots.

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Microprocessor simulation is one of the recent applications of computer design. It is used for emulating the microprocessors for some purposes such as; learning microprocessor structure and assembly language in laboratories in universities. In this research simulation for the microprocessor Intel 80386 was suggested, designed and implemented. Implementation was verified for some data transfer instructions like MOV instructions in deferent addressing modes. The designed simulation program was implemented using Visual Basic programming. Examples were tested successfully for some MOV instructions.

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