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17 Cards in this Set
- Front
- Back
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Digital data is _____ and analog information is _____. |
Discrete; Continuous |
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Digitization means converting _____ into ______. |
Analog; Digital |
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Converting from analog to digital involves a two-step process: ______ and _________. |
Sampling and Quantization |
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When analog information is converted to digital data, we must consider two properties that affect the exactness of the digital representation, one from sampling and one from quantizing. Which of the following is from sampling?
A. Sampling Rate B. Bit Depth |
A. Sampling Rate |
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Which of the following refers to the number of allowable levels of digitized data?
A. Sampling Rate B. Bit Depth |
B. Bit Depth |
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Which of the following can reduce the file size of digital media?
A. Decrease Sampling Rate B. Increase Sampling Rate C. Decrease Bit Depth D. Increase Bit Depth |
A. Decrease Sampling Rate, C. Decrease Bit Depth |
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Our everyday decimal numbering system is base-___. Computers use base-____, which is also known as the _______ numbering system. |
10; 2; Binary |
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The smallest unit in a binary system is a ______. |
Bit |
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Fill in the blanks with "bit(s)" or "byte(s)": Eight _____ equals one ______. |
Bits; Byte |
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The word bit comes from the shortening of the words _____ and _______. |
Binary; Digit |
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If you want to use hand signals to communicate only two possibilities-- yes or no-- to your friend, what is the minimum number of fingers you need? |
One (1) We may call this hand-signal system 1-bit. |
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A pixel that can have only one or two possible color values requires _____ bit(s) to store the color information. |
One (1) |
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If you use a byte to store the grayscale information of each pixel in a grayscale image, how many gray levels are possible for each pixel? |
2^8 = 256 |
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How many bits are in the binary notation 0011010? How many values can this many bits represent? |
7, 2^7 |
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Which of the following sizes is the largest? A. 24 GB B. 24 MB C. 240 MB D. 2,400 KB |
A. 24 GB |
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Name three general strategies to reduce the size of a digital media file. Which of the strategies does not necessarily sacrifice the quality of the media file? Why? |
Reduce Sampling Rate, Reduce Bit Depth, and Apply File Compression; Lossless Compression |
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You should avoid using lossy compression for any file that you want to keep as the start file for further editing because ________. |
Some information of the file will be lost or altered and cannot be recovered if |
