Design a simple burglar alarm system. The system has 4 zone inputs connected to an 8051 I/O port. If any one of these inputs is activated, a bell will sound for 130 msec and the corresponding zone LED, or LEDs will be activated. Assume the Four LEDs and bell are connected to Port 1 and the crystal oscillator of microcontroller has 12MHz frequency. The design may contain the following steps: a) Circuit diagram b) Assembly language program (Code) Note: For generating the delay, use 8051 timers only. If possible please include the flow chart of the design. Thank you !