Bit, Nibble, Byte, Kilobyte [Kb], Megabyte [Mb], Gigabyte [Gb], Terabyte [TB]
(no more will come up on the exam)
1 of 18
True or False? SSDs take less power than HDDs?
True! As there are no moving parts, HDDs can take up much less power than a comparative hard drive.
2 of 18
What are some benefits of Optical Storage?
Easy to manufacture, reliable, durable, versatile
3 of 18
What is a benefit of Magnetic Hard Drives?
They have a low cost per bit (/Gigabyte) ratio.
4 of 18
What is a type of image called that has colour information regarding specific pixels?
A bitmap.
5 of 18
What is a type of image called that uses mathematical formulae to accurately represent lines of solid colour?
A vector image.
6 of 18
What does Audio Sample Rate mean?
The number of times per second the amplitude of an analogue audio signal is analyed by a computer.
7 of 18
What is bit depth? [Audio]
The number of bits that can be used to define the amplitude of an Audio Signal.
8 of 18
What is bitrate? [Audio and Video]
The amount of information (bits) given to the computer per second about a specific audio or video signal.
9 of 18
Which of these memory types are fastest:
RAM, Cache, Registers
[Fastest -> Slowest]
Cache, Registers, RAM
10 of 18
What is the Sample Rate of a typical CD?
44.1kHz or 44,100Hz
11 of 18
Which of these optical storage media have the most space?
[CD, Blu-ray, DVD]
[Smallest -> Biggest]
CD ~ 700 - 800Mbs
DVD ~ 4.7 - 8.5 Gbs
Blu-ray ~ 20 - 25Gbs
12 of 18
What is lossless compression?
Compression that loses none of the original information of the file.
13 of 18
What is Lossy Compression?
Compression that loses unneeded information, but can retain percieved quality.
14 of 18
What is one form of text compression?
A dictionary coder:
Specific words and strings within the text get indexed into a dictionary which the computer uses to create a text file.
15 of 18
Why is Hexadecimal used?
It makes numbers easier for programmers to handle.
16 of 18
Why do we use binary?
It is used to represent how computers see data, with transistors in memory and secondary storage mediums being either a 1 or a 0, representing either an on or an off (a bit).
17 of 18
Why do we use Binary? [Alternative]
It is how computers see data, as either a 1 or a 0, representing an on or an off on a transistor in memory or on a secondary storage device (a bit).
18 of 18
Other cards in this set
Card 2
Front
True or False? SSDs take less power than HDDs?
Back
True! As there are no moving parts, HDDs can take up much less power than a comparative hard drive.
Card 3
Front
What are some benefits of Optical Storage?
Back
Card 4
Front
What is a benefit of Magnetic Hard Drives?
Back
Card 5
Front
What is a type of image called that has colour information regarding specific pixels?
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