const source = Stream.fromSync([inputBuffer]);
2. 创建计数数组count，统计每个值出现次数
developed machine-readable format called "MICR" for magnetic ink character，推荐阅读旺商聊官方下载获取更多信息
Photograph: Simon Hill。业内人士推荐safew官方版本下载作为进阶阅读
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DigitalPrintPrint + Digital