Support/peripheral/other chips - 4004 family

4001	256 x 8 mask programmable ROM
Package:	16-pin DIP
Manufacturers:	Intel
Intel	C4001, P4001
4002	320-bit RAM and 4-bit output port
Package:	16-pin DIP
Manufacturers:	Intel
Intel	C4002-1, C4002-2, D4002-1, D4002-2, P4002-1, P4002-2
4003	10-bit shift register/output expander
Package:	16-pin DIP
Manufacturers:	Intel
Intel	C4003, P4003
4008	Memory interface chip
Comment:	Interfaces 4004 or 4040 microprocessor to PROM, ROM and RAM chips used for program memory.
Package:	24-pin DIP
Manufacturers:	Intel
Intel	C4008, D4008, P4008
4009	I/O interface chip
Package:	24-pin DIP
Manufacturers:	Intel
Intel	C4009, D4009, P4009