Question

Find the port value after each of the following is executed:

(a) PORTB=0x65>>2;
(b) PORTC =0x39<<2;
(c) PORTB =OXD4>>3;
(d) PORTBOXA7<<2;
Your Answer:

Answer 1

The question is about manipulating byte-sized PORT values using bitwise shift operators.

Step-by-step explanation:

(a) PORTB is assigned the value of 0x65 shifted two bits to the right. In binary, this is 0110 0101. After the shift, it becomes 0001 1001 which is equivalent to 0x19 in hexadecimal.

(b) PORTC is assigned the value of 0x39 shifted two bits to the left. In binary, this is 0011 1001. After the shift, it becomes 1110 0100 which is equivalent to 0xE4 in hexadecimal.

(c) PORTB is assigned the value of 0xD4 shifted three bits to the right. In binary, this is 1101 0100. After the shift, it becomes 0001 1010 which is equivalent to 0x1A in hexadecimal.

(d) PORTBOXA7 is shifted two bits to the left. The value of PORTB7 is not provided in the question, so it is not possible to determine the resulting value.