This is one of those funny stories about a bug you want to remember to tell your grandkids before bed
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。业内人士推荐搜狗输入法下载作为进阶阅读
去年6月21日，美国对伊朗发起“午夜之锤”打击行动，美国总统特朗普宣布美军“成功打击”伊朗福尔道、纳坦兹和伊斯法罕3处核设施。（新华社）
DOS 1.x (1981) had no explicit memory management support. It was designed to run primarily on machines with 64K RAM or less, or not too much more (the original PC could not have more than 64K RAM on the system board, although RAM expansion boards did exist). A COM program could easily access (almost) 64K memory when loaded, and many programs didn’t rely on even having that much. In fact the early PCs often only had 64K or 48K RAM installed. But the times were rapidly changing.