Digital code lock design using VHDL with top-down method
Zhou Yuan · Journal of Beijing University of Chemical Technology · 2000
VHDL is very suitable to the design of programmable logic devices. It is difficult to design large capacity CPLD and FPGA with the description method of Boolean equations or of gates. VHDL can provide high level language structure, describe large scale circuit conveniently and complete design rapidly. It supports the creation of library of components to store the components that are used repeatedly. It is a standard language. Its design description can be supported by different tools and implemented by different devices. This paper introduces the VHDL top down design method including scheme determination, hierarchy division, and VHDL application taking a digital code lock design for example.