内存中的一块留用存储区，当程序中断产生时，CPU自动在其中保存程序计数器和工作寄存器的内容。
A reserved area of memory where the CPU automatically saves the program counter and the contents of working registers when a program interrupt occurs.
程序存储器的导址逻辑是由寄存器来实现的，这个寄存器叫程序计数器。
This program memory addressing logic is handled by a register referred to as a program counter.
包含下一条要执行指令地址的处理器中的寄存器。也叫程序计数器。
A register in the processor that contains the address of the next instruction to be executed. Also known as a program counter.
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