Ringo R470
Ringo R470 was a Brazilian clone of the Sinclair ZX81 by Ritas do Brasil. It has a Z80A at 3.25 MHz, 8K ROM and 16 KB RAM. It wasn't 100% compatible with the ZX81.
| Sinclair Research / Science of Cambridge |  | |
|---|---|---|
| Clones | ||
| Timex Corporation | ||
| Amstrad | ||
| Cambridge Computer | ||
| Compatible or related systems | ||
| Sinclair Research peripherals | ||
| Timex peripherals |
| |
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