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HWD101Lab6AnsUnhidden

# HWD101Lab6AnsUnhidden - Hardware101 Fall 2009 Lab Week 6...

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Hardware101- Fall 2009 Lab Week 6 Number Systems / Memory Name_______________ Student ID __________ Section_____________ 1. What is the highest memory location addressable with an 8 bit wide bus? What is the highest location with a 16 bit wide bus? 8 bit wide bus = 255 16 bit wide bus = 65535 2. Provide / show all steps required to obtain the answer to the following binary subtraction.. 01101110 -10110101 ---------------- 01101110 10110101 01001010 ----------------- +1 01001011 010111001 01000110 1 01000111- 110-181=-71 3. .Name some of the more common use of SRAM CACHE, NVRAM, FLASH Page 1 of 3

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4. Using rule 1 (long division) convert the number 47 (base 10) to octal. And the number 156 (base 10) to hexadecimal? Show the steps used to obtain the result. 47 / 8 = 5 remainder 7 octal value = 57 156 / 16 = 9 remainder 12 (C) = 9C 5. What are the plus factors of DRAM and what are some of the drawbacks vs. SRAM? Feature - Inexpensive,can be packed very densily drawbacks – must be refreshed, slow 6. Describe the difference between parity checking and ECC. Parity checking is a method of data validation using a read after write check to confirm the ODD or EVEN bit count in a byte combined withtthe parity bit.
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