Introduction - If you have any usage issues, please Google them yourself
As the microelectronics and the rapid development of computer science, to the EDA (electronic design automation) industry, has brought great changes. Especially the beginning of the 20th century, 90 years, the electronic system has moved from the circuit board-level systems integration to develop into, including ASIC, FPGA/CPLD and embedded systems a variety of modes. Can be said that EDA industry, electronic information products has become a pillar industry. EDA has been able to flourish, one of the key factors is the use of a hardware description language (HDL) description of the electronic circuitry. On the FPGA and CPLD development, the more popular HDL mainly Verilog HDL, VHDL, ABEL-HDL, and AHDL etc., in which VHDL and Verilog HDL because of the direction for the development of standardization eventually become IEEE standard.