How to represent a binary number in C51?

Hi, How to represent a binary number in C51? I wrote, for example, 11110000b but the C51 don't agree! Please, answer me. Thank you. Hoang Kong Kong. Ha Noi-Viet Nam.
How to represent a binary number in C51?

Hi, How to represent a binary number in C51? I wrote, for example, 11110000b but the C51 don't agree! Please, answer me. Thank you. Hoang Kong Kong. Ha Noi-Viet Nam.
how do i represent 0.1 in keil uvision4

i am writing a code to convert c->f and i need to show the value after decimal.
how do i represent 0.1 in keil uvision4

i am writing a code to convert c->f and i need to show the value after decimal.
about represent and develop method.

I have been designing embedded system for several years. yet I haven't found good books on develop method, and how to represent the system in diagram so that I can gradually break a big taks into small...