초록 ▼

A portable hand-held machine M1 includes a keyboard M4, a display screen M5, a microprocessor, and a memory. The machine includes a receptacle M2, and a connector M6 to enable connection to at least one removable carrier M3 comprising a memory associated with a microprocessor M8. Circuits are provid

A portable hand-held machine M1 includes a keyboard M4, a display screen M5, a microprocessor, and a memory. The machine includes a receptacle M2, and a connector M6 to enable connection to at least one removable carrier M3 comprising a memory associated with a microprocessor M8. Circuits are provided for establishing a dialog between the machine M1 and the removable carrier M3.

대표청구항 ▼

A portable hand-held data processor comprising a case sized to enable the case to be hand-held, the case having thereon a keyboard for manual data entry and a display, and having a slot therein for receiving a removable carrier; first processing means including a first microprocessor and a first mem

A portable hand-held data processor comprising a case sized to enable the case to be hand-held, the case having thereon a keyboard for manual data entry and a display, and having a slot therein for receiving a removable carrier; first processing means including a first microprocessor and a first memory disposed within the case and connected to the keyboard and to the display for performing a first predetermined set of data processing operations; a removable carrier received within the slot and releasably connected electrically to the first processing means, the removable carrier comprising a card embodying therein second processing means including a second microprocessor and a second memory for performing a second predetermined set of data processing operations; and means for the bidirectional transmission of messages in bit serial form between the first and second processing means by variations of a signal on a single conductor line connecting the first processing means to the second processing means of the removable carrier received in the slot, the first and second memories embodying programs for controlling the first and second microprocessors so as to afford bidirectional communication therebetween over said single conductor line and to expand the data processing capability of the portable data processor to enable the portable data processor to perform both said first and second predetermined sets of data processing operations.