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270Exam1Sp11 - CompE 270 Digital Systems Sp11 NAME Exam 1...

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CompE 270 Digital Systems Sp11 NAME:____________________ Exam 1 - use additional sheets or other side if needed -- SHOW WORK for partial credit 1 1) Add the 8-bit values (show results as 8 bits : binary, hex, and decimal . 10 pts Add hex: convert binary to decimal FF hex _ _ _ _ _ _ _ _ binary = _____ Signed Dec + 10 hex + _______________ binary = _____ Signed Dec show results in = _______________ binary = _____ Signed Dec hexadecimal: __________ Is the 2’s comp Result valid? Y / N_ Signed decimal: __________ Is the unsigned Result valid? Y / N _ Carry Out: C = ___ Overflow: _____ 2) Multiply 6 10 times 5 10 in unsigned binary: 5 pts 3) Convert the following numbers: (5 pts ea) a) 4 bit 2’s comp: 11.01 2 b) Signed hex C0 to decimal: __________ to decimal: ________ c) Decimal -1.75 d) Decimal 127 to 4 bit 2’s comp binary: _______ to unsigned hex: ______ 4) Calculate the following using 4-bit BCD sum, and decimal equivalents: 10 pts 0 1 0 1 0 1 1 0 BCD = ________ Decimal
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270Exam1Sp11 - CompE 270 Digital Systems Sp11 NAME Exam 1...

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