![](/Miller/mini/sliderule.jpg) Romania 1957
| ![](/Miller/mini/abacus16.jpg) Netherlands Antilles 1966
| ![](/Miller/mini/abacus7.jpg) Cuba 1970
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![](/Miller/mini/abacus13.jpg) Democratic Republic Congo 1971
| ![](/Miller/mini/abacus9.jpg) Australia 1972
| ![](/Miller/mini/schick.jpg) Germany 1973
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![](/Miller/mini/abacus14.jpg) Colombia 1977
| ![](/Miller/mini/abacus15.jpg) Albania 1978
| ![](/Miller/mini/abacus6.jpg) Central African Empire 1979
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![](/Miller/mini/abacus1.jpg) Japan 1987
| ![](/Miller/mini/abacus11.jpg) West Germany 1987
| ![](/Miller/mini/abacus10.jpg) Ireland 1988
|
![](/Miller/mini/abacus12.jpg) Venda 1991
| ![](/Miller/mini/abacus8.jpg) Egypt 1997
| ![](/Miller/mini/abacus4.jpg) Liberia 1999
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![](/Miller/mini/computing2.jpg) Dominica 2000
| ![](/Miller/mini/abacus17.jpg) Liberia 2000
| ![](/Miller/mini/computer1.jpg) Great Britain 2000
|
![](/Miller/mini/abacus2.jpg) Macao 2001
| ![](/Miller/mini/abacus3.jpg) Macao 2001
| ![](/Miller/mini/calculate1.jpg) Germany 2002
|
![](/Miller/mini/counting1.jpg) Romania 2004
| ![](/Miller/mini/counting1a.jpg) Romania 2004
| ![](/Miller/mini/counting2.jpg) Romania 2004
|
![](/Miller/mini/counting2a.jpg) Romania 2004
| ![](/Miller/mini/counting3.jpg) Romania 2004
| ![](/Miller/mini/counting3a.jpg) Romania 2004
|
![](/Miller/mini/counting4.jpg) Romania 2004
| ![](/Miller/mini/counting4a.jpg) Romania 2004
| ![](/Miller/mini/counting5.jpg) Romania 2004
|
![](/Miller/mini/counting5a.jpg) Romania 2004
| ![](/Miller/mini/computing3.jpg) Macedonia 2004
| ![](/Miller/mini/abacus5.jpg) Israel 2005
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![](/Miller/mini/schick2.jpg) Germany 2023
|