Digital Logic

Question

The octal representation of an integer is (342)8. If this were to be treated as an eight-bit signed integer in 2's complement representation, its decimal equivalent is _________

• A. 226
• B. -30
• C. 76
• D. -98

Answer 1

$(342)_8 =(11 100 010)_2 = (-30)_{10}$

Comments

why haven't you considered 0 ( 011100010 ) as the sign bit? I calculated the answer as 226.

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because of eight-bit signed integer.