Topic: Digital Circuits
Given the decimal number -19, an eight bit two's complement representation is given by
- A. 11101110
- B. 11101101
- C. 11101100
- D. None of these
Answer: B. 11101101
Explanation: The 8-bit binary representation of +19 is 00010011. To find the two's complement for -19, first take the one's complement by inverting all bits (11101100), then add 1 to the LSB: 11101100 + 1 = 11101101.