1.) What are the advantages of flash memory over hard disk storage? What are the
ID: 3596026 • Letter: 1
Question
1.) What are the advantages of flash memory over hard disk storage? What are the
advantages of hard disk over flash memory storage? What are the advantages
of both hard disk and flash memory storage over RAM? What is the major
advantage of RAM over other types of storage?
2.) An optical disk consists of two thousand concentric tracks. The disk is 5.2 inches
in diameter. The innermost track is located at a radius of 1/2 inch from the
center. The outermost track is located 2 1/2 inches from the center. The density
of the disk is specified as 1630 bytes per inch along the track. The transfer rate is
specified as 256,000 bytes per second. The disk is CLV. All blocks are of equal
size.
a. The innermost track consists of ten blocks. How many bytes are contained
in a block?
b. How many blocks would the outermost track contain?
c. The capacity of the disk is approximately equal to the capacity in bytes
of the middle track times the number of tracks. What is the approximate
capacity of the disk?
d. What is the motor rotation speed when reading the innermost track? the
outermost track?
3.)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 × 480 image during
display? A 1600 × 900 image? A 1440 × 1080 image?
b. How many 1024 × 768 non-compressed color images will fit on 4.7 GB
DVD-ROM?
4.) The cost of a monitor increases rapidly with increasing bandwidth. The bandwidth
of a monitor ismeasured roughly as the number of pixels displayed on the
screen per second.
a. Calculate the bandwidth of a 640-pixel by 480-pixel display operating in an
interlacemode. One-half of the image is generated every 1/60th of a second.
b. Do the same for a 1920-pixel by 1080-pixel display operating in noninterlace
mode. One entire image is generated every 1/60th of a second?
5.)In printer jargon, ‘‘replaceables’’ are the items that are used up as part of the
printing process.What are the replaceables in a laser printer? In an inkjet printer?
In a dot-matrix impact printer?
need answers for these maximum 4-5 lines.
Explanation / Answer
1)Answer:
advantages of flash memory over hard disk storage:
advantages of hard disk over flash memory storage:
advantages of both hard disk and flash memory storage over RAM:
->Data stored on hard disc / flash is permanent (well at least for a few years), as soon as power is turned off all data in RAM is lost.
major advantage of RAM over other types of storage:
->Speed ... DDR3 has maximum speeds of around 14000 MB/s (compare that to even the fastest SSDs at around 600MB/s
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