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5 Cards in this Set
- Front
- Back
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Why is a byte 8 bits? |
6 bits only let us encode 64 chars. For lower and upper case letters, we have 52 but then we need 0-9 and punctuation. 7 bits encode 128 different characters. The extra bit is used to encode parity (odd or evenness) of 7 bits. |
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Hertz? |
A cycle per second. Means the number of times the computer's clock ticks per second. |
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How long does it take a computer to look up a byte in RAM? |
RAM in billions / (#of cores * GHz) in billions 8GB / (4 * 3.5) (8bil / 14bil) = .57 seconds |
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Linear Search Binary Search Interpolation Search |
Linear - Weight each coin (takes n steps) Binary - Split in half each time. (Take log2n steps) Interpolation - Estimate position of word from its letters Takes log2(log2n) steps. |
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Uploading files? |
scp -pr xxxx@lee.cs.miami.edu:workspace/csc220/src/prog |
