# Exam1 - CompE 270 Digital Systems Exam #1 - use additional...

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CompE 270 Digital Systems S10 NAME:____________________ Exam #1 - use additional sheets if needed -- SHOW WORK for partial credit Exam1.doc 1 1) Binary notation has a range of valid values which depends on the number of bits and format. What is the range of valid values (in decimal notation) for: 5 pts. 8 bits, unsigned 4 bits, 2’s complement (most from: ___ __ (base 10) negative) from: _ ______ (base 10) to: _____ (base 10) (to most to: _ ______ (base 10) positive) 2) Subtract the 8-bit UNSIGNED values (show results as 8 bits : binary, hex, and decimal notation). Indicate if the result is valid 10 pts FF hex binary = _____ Dec - 10 hex - _______________ binary = _____ Dec show results in = _______________ binary = _____ Dec hexadecimal: __________ Result valid? ____ decimal: __________ Borrow Out: _ ___ Overflow: _____ 3) Add the 8-bit 2’s comp values (show results as 8 bits : binary, hex, and decimal notation). Indicate if the result is valid 10 pts FF hex binary = _____ Dec + 10 hex + _______________ binary = _____ Dec show results in = _______________

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## This note was uploaded on 02/26/2012 for the course COMPE 270 taught by Professor Harris during the Spring '08 term at San Diego State.

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Exam1 - CompE 270 Digital Systems Exam #1 - use additional...

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