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4000 series is an industry-standard family of integrated circuits.

4000 series may also refer to:

Japanese train types

• Meitetsu 4000 series electric multiple unit
• Odakyu 4000 series electric multiple unit
• Seibu 4000 series electric multiple unit
• Tokyu 4000 series electric multiple unit
• Yokohama Municipal Subway 4000 series electric multiple unit

Other uses

• Avaya ERS 4000 series, a series of Ethernet routers
• Avaya VSP 4000 series, a series of Ethernet routers
• Busan Transportation Corporation 4000 series people mover for the Busan Metro
• CTA 4000 series, a series of Chicago "El" rolling stock
• GEC 4000 series, a series of minicomputers
• HP LaserJet 4000 series, a series of printers
• International 4000 series, a series of trucks
• International 4000 series (1989), a series of trucks
• Port Authority 4000-series PCC, a series of streetcar
• Radeon HD 4000 series, a series of graphics processing unit
• Seoul Metro 4000 series, a series of Seoul Metro train.

See also

• 4000 (disambiguation)