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| Part Number | 5490 |
| Description | Decade and Binary Counters |
| Info | DM5490 DM7490A DM7493A Decade and Binary Counters . |
| Manufacture | National Semiconductor |
| for PC | Download 5490 Datasheet |
| Part Number | 5490A |
| Description | DECADE COUNTER |
| Info | 54/7490A 54LS/74LS90 DECADE COUNTER 90 CONNECTION. |
| Manufacture | ETC |
| for PC | Download 5490A Datasheet |