This was the genesis of modular arithmetic, a critical concept now ubiquitously used in computer science and cryptography.
这就是模算术的起源,模算术是现在计算机科学和密码学中普遍使用的一个关键概念。
英语百科
Modular arithmetic
In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" upon reaching a certain value—the modulus (plural moduli). The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones Arithmeticae, published in 1801.