Question

to isolate bits 7 through 4 in the rightmost 4 bits of a 32-bit word, one can first shift left 24 bits, then right ___ bits.

Answer 1

To isolate bits 7 through 4 after a 24-bit shift left in a 32-bit word, one should shift the word right 28 bits to position these bits at the rightmost end of the word.

Step-by-step explanation:

To isolate bits 7 through 4 in the rightmost 4 bits of a 32-bit word, one can perform a two-step process involving bit shifting.

After shifting left 24 bits, you need to shift the result right 28 bits to position these bits in the rightmost part of the word.

This is because originally, the bits were in positions 7 through 4, and when you shift left by 24 bits, the 7th bit moves to position 31 (the leftmost position in a 32-bit word).

To bring it back to the rightmost position (position 3), you need to shift it right by 28 (since 31 - 3 = 28), thus bringing bits 7 through 4 to positions 3 through 0, respectively.