IT$105$ IT Architecture Fundamentals Homework Assignment #$6($Chapters $9$ and $10)$

Directions

Read each question and respond carefully. Once answered, follow the directions in Blackboard to submit your answers.

Questions

$1.$ Consider the steps required to write a block of data from a disk to memory. Outline the major sequence of I$/$O events that must occur to make this possible. $($There are three major steps$)(10$ points$)$

$2.$ If my CPU runs at $4\mathrm{.}0$GHz$,$ and on average takes $10$ clock cycles to complete an instruction, how many instructions will be completed in the time it takes to type $"$MY CPU IS RUNNING NOW"? Assume it takes $5$ seconds to type the message. Show your work and how you arrived at the solution. $(10$ points$)$

$3.$ Describe how the computer uses interrupts to control the flow of data to the printer. $(10$ points$)$

$4.$ Describe the difference between active matrix display and passive matrix display in a liquid crystal display $($LCD$)$ monitor. Which results in a brighter picture? $(10$ points$)$

$5.$ What is the capacity of a hard drive $($in GB$)$ consisting of $120,000$ tracks, $4,000$ sectors$,$ and $4$ surfaces? Assume each block has $512$ bytes. $(15$ points$)$

$6.$ What is the average rotational latency of a hard drive rotating at $7,200$ RPM or $120$ revolutions per second? $($Give your answer in milliseconds$)(15$ points$)$

$7.$ What is the transfer time for a hard drive rotating at $7,200$ RPM or $120$ revolutions per second? Assume there are $30$ sectors per track. $($Give your answer in milliseconds$)(15$ points$)$

$8.$ For a display of $1920$ pixels by $1080$ pixels at $16$ bits per pixel how much memory, in megabytes, is needed to store the image? $(15$ points$)$