Magnetic bubble memory device.

摘要

Disclosed is a cassette type magnetic bubble memory device which is dismountably attached to a main apparatus (28) comprising a bubble driving circuit, a bubble writing circuit and a bubble reading circuit and which comprises a case and, contained therein, a magnetic bubble memory element including at least a bubble chip, a coil for producing a revolving magnetic field and a magnet for producing a bias magnetic field. A writing-inhibiting member (4) is mounted on the surface of the case to hold the state of inhibition of the writing operation in the magnetic bubble memory element. This writing-inhibiting member (4) is arranged so that the state of inhibition of the writing operation and the state of allowance of the writing operation can be switched by a manual operation.