利用硬件描述语言VHDL实现PSK信号相对码和绝对码的转换-Two VHDL programs to realize the PSK signals conversion between absolute and relative code

用VHDL设计了一个频率计，给出了各模块的详细源码，并给出了注解，对初学者及课程设计有帮助。-VHD designed with a frequency counter, gives the details of each module source code, and gives notes on programs designed for beginners and helpful.

antidad_a EQU s0 talto EQU s1 Rename register sX with <name> tbajo EQU s2 indicador EQU s3 cantidad_b EQU S4 Define constant <name>, assign value name ROM output file generated by pBlazIDE assembler VHDL "ROM_form.vhd", "ser