Texas Instruments TI-84 - Manual (Page 564)

Chapter 19: Communication Link 561
You cannot send memory backups between the TI-84 Plus product family and the TI-83
Plus product family.
Receiving from a TI-83 Plus Silver Edition or TI-83 Plus Receiving from a TI-83 Plus Silver Edition or TI-83 Plus Receiving from a TI-83 Plus Silver Edition or TI-83 Plus Receiving from a TI-83 Plus Silver Edition or TI-83 Plus
The TI-84 Plus product family and the TI-83 Plus product family are compatible with a
few exceptions.
Receiving from a TI-83 Receiving from a TI-83 Receiving from a TI-83 Receiving from a TI-83
You can transfer all variables and programs from a TI-83 to a TI-84 Plus if they fit in the
RAM of the TI-84 Plus. The RAM of the TI-84 Plus is slightly less than the RAM of the
TI-83.