hello,everyone!Glad to come here again!I meet a question again!I want to get help from you!first I must thank you for you warn-harted help. my question is :I want to learn programing in C,ever before I programme in ASM!I am not very clear about the definition and language regulation in Keil-C51!I want a detailed explaination document!please give me a hand！ next is:Is there any differences between the Keil C51 and Franklin C51.That's all for my question! thanks to all of you!