Features: Onboard MAX232 interface circuit for easy communication with a computer and other serial devices DC plug-in jack for power input Onboard bridge rectifier enables the board to accept both AC and DC input voltages Onboard 5V regulator(LM7805) with filtering capacitors and heatsink Power Status LED(Green) and a general purpose user LED(Red) Onboard quartz crystal 11.0592 Mhz oscillator circuit Port extensions for all ports External pull-up resistors for Port 0 Vin, 5V and Gnd bus provided
