The cost of distributing content to a potentially vast global audience has collapsed as content-for example, the written word, film and video, music, numerical data, and pictures-is digitised.
Numerical unstability of FTF algorithm becomes conspicuous especially when the algorithm is implemented by the finite-word-length fixed-point arithmetic.
但是FTF算法具有众所周知的数值性能不稳定性，该问题在用有限字长定点实现时变得尤为明显。
3
In a word, the soft PLC has got the superior that hard PLC can't compare to, which representative the trend of the open numerical control system.