一个trap被像程序一样的代码调用，并用于例如调用操作系统例程(通常是同步的)。 中断是由事件调用的(很多时候是硬件，比如网卡接收到数据，或者CPU定时器)，并且-顾名思义-中断正常的控制流，因为CPU必须切换到驱动程序来处理事件。

我认为陷阱是由当前指令的执行引起的，因此它们被称为同步事件。中断是由处理器中运行的与外部事件相关的独立指令引起的，因此被称为异步中断。

一般来说，像异常、错误、中止、陷阱和中断这样的术语都是指同样的事情，都被称为“中断”。

来看看Trap和Interrupt的区别:

陷阱:程序员发起并期望将控制转移到一个特殊的处理程序例程。(例如:80x86 INT指令是一个很好的例子)

而

中断(硬件):是基于CPU外部硬件事件的程序控制中断(例如:按键盘上的一个键或计时器上的超时 芯片)

Interrupts are hardware interrupts, while traps are software-invoked interrupts. Occurrences of hardware interrupts usually disable other hardware interrupts, but this is not true for traps. If you need to disallow hardware interrupts until a trap is served, you need to explicitly clear the interrupt flag. And usually the interrupt flag on the computer affects (hardware) interrupts as opposed to traps. This means that clearing this flag will not prevent traps. Unlike traps, interrupts should preserve the previous state of the CPU.

陷阱是一种特殊的中断，通常被称为软件中断。中断是一个更通用的术语，它包括硬件中断(来自硬件设备的中断)和软件中断(来自软件的中断，如陷阱)。

A trap is a software interrupt.If you write a program in which you declare a variable having divide by zero value then it is treated as a trap.Whenever you run this program it will throw same error at the same time.System call is a special version of trap in which a program asks os for its required service. In case of interrupt(a general word for hardware interrupts)like an i/o error,the cpu is interrupted at random time and off course it is not the fault of our programmers.It is the hardware that brings them up.