Now any compiler or application software just grabs the scan code from the ESC key and tailors the action to what it wants. Nothing wrong with that.

当今的编译器或应用程序都会抓取esc键释出的扫描指令，并定制相应的操作。这没有什么问题。

youdao

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.

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。

youdao

Specifies a hardware scan code for the key.

指定键的硬件扫描码。

youdao

There are, after all, secrets to safeguard behind these doors, where virus experts scan virulent code, design cures and create advanced encryption systems.

CNN: Virus protection coming for wireless users

They could click on a link, scan a QR Code, or even scan an NFC tag containing a link to the malicious website.

FORBES: Move up http://i.forbesimg.com t Move down

Another person can then scan the code to get the file.

WSJ: Easier File Sharing With Phones In Black and White