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exam1-fall03-soln

# exam1-fall03-soln - ECE 206-001 NC State University Exam...

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ECE 206-001 Name:____________________________________________ NC State University Exam 1(A): 23 September 2003 1 1. (18 points) Fill in the missing representations for the following numbers. You must show your work to get full credit. If a number cannot be represented using a particular scheme, write “none” and explain why no representation is possible. decimal 10-bit two’s complement 10-bit sign-magnitude 10-bit one’s complement (a) 475 0111011011 0111011011 0111011011 (b) -92 1110100100 1001011100 1110100011 (c) 261 0100000101 0100000101 0100000101 (d) -47 1111010001 1000101111 1111010000 n 2 n 0 1 1 2 2 4 3 8 4 16 5 32 6 64 7 128 8 256 9 512 10 1024

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ECE 206-001 Name:____________________________________________ NC State University Exam 1(A): 23 September 2003 2 2. (20 points) Fill in the blank to indicate whether each statement is True (T) or False (F). __ T __ A Palm Pilot (hand-held device) can compute the same things as a Cray supercomputer, given enough time and memory. __ F __ A p-type MOS transistor is used to pull the output of a CMOS gate down to zero. __ T __ A 512-bit byte-addressable memory requires 6 address bits. __ F __ Most modern computers are implemented using three types of transistors: nMOS, pMOS, and CMOS.
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