问题描述：
英语翻译
11.Registers in the control unit are used to keep track of the overall status of the program that is running.
12.Many computer systems have stacks built into their circuitry and have machine-level instructions to operate the hardware stack.
11.Registers in the control unit are used to keep track of the overall status of the program that is running.
12.Many computer systems have stacks built into their circuitry and have machine-level instructions to operate the hardware stack.
问题解答：
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