Does anyone know of a reasonably priced , portable device that covers

oscillioscope
multimeater
uart/i2c/serial analizer/usb interface

?

 

You might want to be a tad more specific. What is "reasonably priced" mean? Many people would consider $2000 a great price and others would consider $500 unacceptable. What features do you need in a scope? A two channel 20MHz scope is one thing, a four channel 500MHz scope is quite another.

Get the idea?