Hi all, 8051 micro is very new to me. Does anybody in this forum kind enough to help me to create a routine to perform A/D and D/A so that it can be interfaced to a serial A/D or D/A converters using SPI protocol? or may be somebody can instruct me to the right site on the internet? The project I am working on requires that a standard 8051 micro to interface with the MAX187 ADC. Thanks in advance Jimmy Sayavong jsayavong@perkinselectronics.com