What is digital special effects for film and television?

Digital film and television special effects in the film and television drama, by the artificial creation of the elephant and illusion, are called digital film and television special effects, also known as special effects. The appearance of digital film and television special effects, so that the film and television drama shooting has become more simple, but also allows the actors to avoid being in a dangerous situation, the effect looks more exciting, so in today's film and television drama, to find a film and television without digital special effects is very difficult, most of the film and television works are a large number of applications of digital film and television special effects design.