[TABLECONTEXT] : ibm_model_number : 8573-031 | 8573-031 : year : 1989 | 8573-031 : name : P70 386 | 8573-031 : case : portable | [TABLECONTEXT] : [title] : IBM Personal System/2
In 1989, IBM introduced its first portable personal system, under the name P70 386.