基于线性反馈移位寄存器电路，并结合FPGA 的特有结构，一种简捷而又高效的伪随机序列产生方法-The Implementation and Research on Pseudo-Random Number Generators with FPGA

The VGA example generates a 320x240 diffusion-limited-aggregation (DLA) on Altera DE2 board. A DLA is a clump formed by sticky particles adhering to an existing structure. In this design, we start with one pixel at the center of the screen and allow