Question 10.10 parts a and b.

Why is the average seek time for a hard disk much shorter than for a CD-ROM or DVD-ROM? There is a current proposal to cut the size of an individual bit in a DVD-ROM in half so as to increase the capacity of the disk. This would cut both the width of the track and the track length required per bit in half. If the current capacity of a DVD-ROM is approximately 4.7 GB, what would be the capacity of the new "high-density" DVD-ROM? A typical published page consists of approximately forty lines at seventy-five characters per line. How many published pages of 16-bit Unicode text would fit on a typical 600 MB CD-ROM? How many published pages of text fit on a netbook computer with an 80 GB flash memory? A high-quality photographic image requires 3 bytes per pixel to produce sixteen million shades of color. a. How large a video memory is required to store a 640 times 480 image during display? A 1600 times 900 image? A 1440 times 1080 image? A 2560 times 1440 image? b. How many 1920 times 1080 non-compressed color images will fit on 4.7 GB DVD-ROM? A 1024 times 768 image is displayed, noninterlaced, at a rate of thirty frames per second. a. If the image is stored with 64K-color resolution, which uses 2 bytes per pixel, how much memory is required to store the picture