1)could i connect the arduino to any type of ic's ? like decoders ? directly ?
2)how could manipulate the outputs in ports (i.e like the pic micro you can manipulate 8 bits in one instruction !!!)?(for ex. portb=0x05 this means that pin 2 and pin 0 are high ), so could i do this with the arduino !!!!
3)could i connect the arduino with pic micro ??!?!!!!
any one answere me these questions plz ?
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1: As long as they are voltage compatible or you build an interface, yes. Don't forget to decouple the power!
2: http://www.arduino.cc/en/Reference/PortManipulation
3: see #1
2: http://www.arduino.cc/en/Reference/PortManipulation
3: see #1
Please be positive and constructive with your questions and comments.