In the 8051, the TCON register contains control/status bits associated with?

  • ATimers and external interrupts
  • BSerial baud data only
  • CProgram memory only
  • DPort 0 pull-ups only
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Correct Answer: A. Timers and external interrupts
Explanation: TCON includes timer run/overflow bits and external-interrupt control/flag bits.
Reference: Standard microprocessors and microcontrollers: 8051 timers & interrupts