HELP!!!! can anyone assist me on doin this!!!!

hello!!! im having a project that requires me to interface DTMF(MT8889C) with 8051 Micro-controller using uVision(.a51). Please anyone that have the codes or could teach how-to on the above application...
HELP!!!! can anyone assist me on doin this!!!!

hello!!! im having a project that requires me to interface DTMF(MT8889C) with 8051 Micro-controller using uVision(.a51). Please anyone that have the codes or could teach how-to on the above application...
how to read and wirte directly harddisk address?

i am going to devlope a software with a pos because i didn't get the machine now . i want to realize the programe on pc. first i want to simulate ram on pc harddisk , and write & read harddisk...
how to read and wirte directly harddisk address?

i am going to devlope a software with a pos because i didn't get the machine now . i want to realize the programe on pc. first i want to simulate ram on pc harddisk , and write & read harddisk...
Can anyone explaine this logic?

while (1) { USARTdrv->Receive(&cmd, 1); /* Get byte from UART */ osSignalWait(0x01, osWaitForever); if (cmd == 13) /* CR, send greeting */ { USARTdrv->Send("\nHello World!", 12); osSignalWait...