bits patterns between matlab and other device

Sir,mr walter ,im very grateful for you for your explain to my questions specially for my question " effect of using usb to rs232 on transfer data". I use laptop and I use its usb to out data transferred from computer and I use usb to rs232 adapter to connect with my 8051 kit .when I send data from matlab using below instruction Fwrite(s,dec2bin(1),'uint8') I receive in my 8051 11111000 this displayed on led. I want ask you is this occur because I use usb to rs232 adapter in other word if I use rs232 directly from desktop computer (pc) may I receive 00000001 as I send from matlab? Thanks in advance for your help,suggestions,idea

[Image Analyst]

If this is a followup comment to some other discussion you are having with Walter, you should continue it there, unless this is a completely new and different question.

[Walter Roberson]

duplicates http://www.mathworks.co.uk/matlabcentral/answers/70091-effect-of-using-usb-to-rs232-on-transfer-data