Flexible computer and connecting method for externally arranged main external memory

The invention relates to a soft computer which comprises a case (1), a master external memory (5) arranged outside the case, a precision finishing guiding orientation device (8), wherein the master external memory (5) can be nicely limited outside the guiding orientation device (8); it also comprises a connecting device (6) which comprises two parts (61) (62), wherein it doesní»t generate mechanical impact force or little impact force when the two parts interconnected with each other or cut-off; one part (61) of the connecting device (62) is fixed on one end of the master external memory (5) with good electric connection; the other part (62) is fixed on the end of the guiding orientation device (8) and ití»s connecting device is connected with the computer by cable.