Bộ que tính tre của Trung Quốc là công cụ tính thập phân cổ nhất
Sách kỷ lục Guinness đã công nhận một bộ que tính bằng tre của Trung Quốc tồn tại từ hơn 2.300 năm nay là công cụ tính thập phân cổ xưa nhất thế giới.
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meG7nOG6rMOZ4bum4bui4bqsJT3DlMOZ4bqi4bqwL0DhurbhurBA4bqsTVXhurwkJMO94bqmQOG6teG7pE5d4bqm4bq24buL4bucPsOZ4bua4bqsIyrDk+G6rCXhu57DmeG7nOG6rMOZ4bq+XeG6rHvhu6zDmeG6rExQ4bqsTcOKTeG6rMOZ4buc4bumw5rhuqxMKuG7sMOZ4bqsVcSoKuG6rCUq4buuw5nhuqw94bq84bqsVOG7nOG7qOG7ouG6rOG7oz0qw5nhu5rhuqzGoSrhu6xN4bqi4bqwL0DhurbhurBA4bq24bqwQOG6rE1V4bq8JCTDveG6pkAzKiXhu5zhu6Q94bqm4bq24buj4bucw5Phu6ThuqzFqeG7osOTJcOZ4bq8w5or4bqwL0DhurY=
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