what is 16 bit programming?

[funfuny]

can someone explain me what is 16bit programming. I program with the most basic assembler, what is the diffrence and when can I get help in this assembler?

[Farabi]

16-bit programming is an old way of programming. It registers can only hold a value at maximum 65535 (0xFFFF). On memory segmentation 16-bit programming can only use  memory at maximum 1 MB, also that memory is not protected so everyone can see that memory freely.