有充分的理由支撑，它(IBM PC)的ESC键释出的不是字符本身，而是一个“扫描指令”。随后这个指令被映射至硬件层面，就像编译器所做的。

For excellent and sufficient reasons, its keys emitted not the character itself but a "scan code", which was then remapped to the hardware level, just as a compiler would.

youdao

有充分的理由支撑，它(IBM PC)的ESC键释出的不是字符本身，而是一个“扫描指令”。随后这个指令被映射至硬件层面，就像编译器所做的。

For excellent and sufficient reasons, its keys emitted not the character itself but a "scan code", which was then remapped to the hardware level, just as a compiler would.

youdao