<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def paste_clipboard(self, event):
 """ Send the clipboard content as user input to the CPU. """

        log.critical("paste clipboard")
        clipboard = self.root.clipboard_get()
        for line in clipboard.splitlines():
            log.critical("paste line: %s", repr(line))
            self.add_user_input(line + "\r")