This paper develops iterative formula of sine and cosine function in document[40], and presents new pixel-level algorithms forgenerating Archimedes and involute curves which are widely used in engineering.

• 本文推广了文献[40]中正弦、余弦函数的递推公式，对工程绘图中常用的阿基米德曲线和渐开线设计了新的逐点生成算法。