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DEC HEX BIN(4-bits) Introducing ARDUINO 0 0 0000 1 1 0001 2 2 0010 3 3 0011 4 4 0100 5 5 0101 How many 1/0 of Port-D? How man

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Answer #1

Question - 1:

Port-D controls the arduino I/O of digital pins '0' to '7'.

Thus there are 8 I/O of port-D.

Question - 2:

Port-D controls the arduino I/O of digital pins '0' to '7', but among these digital pin '0' and pin '1' are used for serial communication and debugging. So these pins cannot be used if serial-communication is in use.

Thus only 5 usable I/O of port-D (digital pin-'2' to pin-'7') if serial-communiation is in use.

Questions - 3 and 4:

To answer the next two questions, refer to the below figure showing assignment of corresponding pins of Arduino and ATmega2560. In below figure, red colored text refer to arduino pins and black colored text refer to ATmel pins.

Analog Reference Analog pino Analog pin 1 Analog pin 2 Analog pin 3 Analog pin 4 Analog pin 5 Analog pin 6 VCC GND Analog pin

Arduino pin assignment of ATMEL's PC5, PB3 and PD1 are:

  • ATMEL PC5 is assigned to D32 (Digital pin 32 of Arduino)
  • ATMEL PB3 is assigned to D50 (Digital pin 50 of Arduino)
  • ATMEL PD1 is assigned to D20 (Digital pin 20 of Arduino)

ATMEL's pin assignment of Ardino's D13, D1 and D19 are:

  • D13 (Digital pin 13 of Arduino) is assigned to ATMEL's PB7.
  • D1 (Digital pin 1 of Arduino) is assigned to ATMEL's PE1.
  • D19 (Digital pin 19 of Arduino) is assigned to ATMEL's PD2.

Question - 5:

Completing the table

► DEC = 165 To HEX: 16/1655 In HEX: 5=5 - 10 10 = A 16 | 10 So 165 0xA5 in HEX 165 in DEC = Ox A5 in HEX To Binary A= 10 in D

23 in HEX: To DEC (2x16) + (3x160) - 32+ 3 = 35 SO 23 in HEX = 35 in DEC То binary HEX = 2 in 3 in HEX 0010 in binary ooll i

- 0100 olol in binary TO HEX! 0100 in binary 4 in HEX Olot in binary 5 in HEX so 0100 0101 in binary = 45 in HEX To DEC: 45 i

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