ee101_quiz1_fall09_sol

# ee101_quiz1_fall09_sol - EE 101 Quiz 1 Fall '09 Redekopp...

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EE 101 Quiz 1 Fall ’0 9 ● Redekopp Name: ________________________________________ Lecture 9:30 / 12:30 / 2:00 Closed Book / 60 minutes Score: ________ No calculators are allowed. Show all your work to get full credit. 1) (17 pts.) Perform the following positional number system conversions (in any order) (2F.C) 16 = ? 2 = ? 8 = ? 10 . For integer portion only, 2F 16 = ? 7 Work Area: Answers 2F.C = 0010 1111 . 1100 2 (2F.C) 16 = ? 2 0010 1111 . 1100 2 = 101 111 . 110 = 57.6 8 (2F.C) 16 = ? 8 2*16 + 15*1 + 12/16 = 47.75 10 (2F.C) 16 = ? 10 47 / 7 = 6 r.5 6 / 7 = 0 r.6 = 65 7 (2F) 16 = ? 7 2) (15 pts.) Given the bit string (set of 1’s and 0’s): 10011011 use each of the different representation systems below to find the decimal equivalent with that system. If the binary string is invalid given a certain representation system, circle “Invalid” and leave the entry blank. System Decimal value (show work for partial credit) 2’s complement 10011011 = -128 + 16 + 8 + 2 + 1 - 101 10 / Invalid Signed Magnitude 10011011 = - (16 + 8 + 2 + 1) - 27 10 / Invalid 84-2-1 Decimal Code 10011011 = 8-1 = 7 / 8 -2 -1 = 5 75 10 / Invalid Excess-3 Decimal Code 10011011 = 9-3 = 6 / 11 3 = 8 68 10 / Invalid Binary Coded Decimal (BCD) [Decimal Code] 10011011 = 1101 is not a valid BCD digit ___________ 10 / Invalid

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## This note was uploaded on 01/18/2011 for the course EE 101 taught by Professor Redekopp during the Spring '06 term at USC.

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ee101_quiz1_fall09_sol - EE 101 Quiz 1 Fall '09 Redekopp...

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