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1??ü′ê￡o×??ˉê????ú￡?ó2?t?èê?ó???VHDL￡? Quarts II￡?FPGA

ABSTRACT
This article is to achieve its basic functions,the automat system on the basis of the VHDL design using Altera's development software Quarts II. Digital circuit design and simulation in the software platform on some of the features of the VHDL (Very High Speed Integrated Circuit the Hardware Description Language) language and grammatical structures, the basic principles of the automat system, system composition and main functions and analyzed and discussed the development of the automat system process using VHDL language. This design methods core circuit hardware design using the VHDL hardware description language programming program, compile and circuit simulation in the Quartus II software platform, the last generated target file downloaded to the bench inside the FPGA chip to simulate the system, validate the design in the experimental stage.
The article first outlines the meaning of the automat system and development as well as the characteristics of the VHDL language, then the vending machine design, design ideas, and gives the block diagram of the overall design, analysis and design to write the VHDL source codethe code in the Quartus II software platform compilation simulation waveforms in line with the design requirements. The vending machine system has the final selection of merchandise, coin processing, purchase withdrawn, the main function of the abnormal coin, the entire system development reflects the usefulness of VHDL design digital control systems used in the Quartus II software platform.

Keywords: the automat system, the hardware description languageVHDL, Quarts II, the FPGA
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