基于EPM7128的数字合成信号发生器（DDS）设计。通过对EPM7128编程，组合出地址累加器、数据锁存器、256*8位ROM空间。外接DA可实现正弦波输出功能-EPM7128-based signal generator for digital synthesis (DDS) design. EPM7128 through programming, the combination of address accumulator, data latches, 256* 8 ROM space.