Don't buy a development board before you master HDL, because you won't be able to use it if you buy it. You need a development board, either Altera's cyclone IV series, or Xilinx's Spantan 6. At this stage, all you have to do is: given a specification requirement or timing diagram, you can design a circuit in HDL to implement it. The recommended textbook is Xia Lao 'Verilog Digital System Design Tutorial' (third edition). Now, you can design some digital circuits, such as traffic lights, electronic piano, DDS, etc. Two, independently complete the design of small and medium-scale digital circuits. You can write a three-stage state machine without reading the book and then you can move to the next stage. At this stage, the recommended textbook is 'Verilog Legend', 'Verilog HDL Advanced Digital Design' or 'VHDL for Logic Synthesis'. HDL is a hardware description language, highlighting the hardware as a feature, so think about HDL with the thinking of digital electricity, rather than using C or other high-level language, if you can not understand this statement, you can read 'What is hardware and what is software. After compiling the code, open the RTL diagram and see what kind of circuit is synthesized. The meaning of the code copy is to familiarize yourself with the syntax rules and compiler (the compiler here is the silicon compiler also called synthesizer, commonly used compilers are: Quartus, ISE, Vivado, Design Compiler, Synopsys VCS, iverilog, Lattice Diamond, Microsemi/ Actel's Libero, Synplify pro), and then imitate the writing, and finally write without reading the book. Next, first find this example to copy the code.

Of course, your mind can turn over, you can also choose verilog, after all, in the country verilog used more. because verilog is too much like C, it is easy to confuse, and finally you will find that you spend a lot of time to distinguish between the two languages, rather than learning how to use it. Then you can choose verilog or VHDL, C language foundation, it is recommended to choose VHDL. Not yet learned the number of electricity first learn the number of electricity. One, the first thing to get started is to master HDL (HDL = verilog + VHDL).

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