Avr Risc Microcontroller Handbook








Avr Risc Microcontroller Handbook
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Programming and Customizing the Avr Microcontroller








Programming and Customizing the Avr Microcontroller
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Handbook of Microcontrollers








Handbook of Microcontrollers
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Programming Embedded Systems in C and C++








Programming Embedded Systems in C and C++
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APPLICATION #1        Simple Outputs - 8 LEDs  

Since any PORT B pin is able to source a max. of 10mA per pin, can use PB to drive LED display directly.(NOTE: using 3mm LED ) As shown in the circuit, 8 LEDs are connected to Port B with each 120 Ohm current limiting resistors.

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The following code, led_90_c demonstrate how to output and turn on & off the LEDs. The program blinks the series of LEDs from LED1 to LED8 turning on & off one after another sequentially. When it reaches LED8, it repeats the process all over again starting at LED1.

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