hello., i just want to send data from PC to arduino through usb port., i searched the net but the result came up is through RS232 only but the latest model of computers dont have serial port anymore so i decided to use usb instead of Rs232.,is there anyone who can give me sample codes regarding this matter., im using Arduino Diecimilia ver 1.0 ., need help ., pls reply ., im running out of time ., I only had 1 month to do the project.,

Possibly the simplest solution then is to install a serial port (RS232) on your PC

Otherwise check if the supplier has provided an API or ActiveX control than you can use to talk to the device