VISA

hello, to acquire dataa via usb ,my problem is how  i recieve 3 dataa its not only 1 ,for example i wantt to recieve current voltage andd temperature ,how  i recieve these 3 dataa,howcan i recieve it alll or i must do a dalay between them,andd howcan i savee my dataa ,i wantt to convert it from digital to analog ,howcan i recieve these 3 dataa andd display it without lost it andd thanks