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computer science help- What is the correct 8-bit two's complement representation for -21

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Question;1. What is the correct 8-bit two's complement representation for -21?;2. Which of the following addressing modes/operands would one expect to be slowest? Why? Your response must be at least one page in length.;a. register operand;b. immediate operand;c. indexed addressing;4. What are pseudo-ops? How are pseudo-ops useful to us as programmers? Your response must be at least one page in length.;5. What is an assembler? What is the input to an assembler? What is the output from an assembler? Your response must be at least one page in length.;6. What is a grammar? Describe each of its parts. Your response must be at least one page in length.;9. According to Warford, what are the two purposes of an operating system? Your response must be at least one page in length.;10. What does it mean to translate and what are the typical phases involved? Describe each phase. Your response must be at least one page in length.

 

Paper#30175 | Written in 18-Jul-2015

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