Answer
$11010001$
Work Step by Step
The first bit is 1 because the number is negative, and rest of bits denotes the magnitude, $81$.
$81_{10}=1010001_2$
The 8-bit representation is $11010001$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.