Fidel GonzÃlez Aguilar <fidelg@xxxxxxxxxxxxxx> writes: > I started to programing on my Debian with a acquire card made by > myself, but I couldn't find an instruction to "wait on line" just > nanoseconds like the old "delay(nanoseconds)" Did u rememember it? that > was used in Dos-tc programing. > Could u recomend book for "hardware programing for aqcuire data"? The mailing list gcc-help is for questions about how to use gcc. It is not for questions about the C language, or about library functions, or about operating systems, or about hardware programming. Please ask such questions elsewhere. Thanks. On GNU/Linux you may be looking for the nanosleep() function. Ian