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Computer Use: Fundamentals
York University
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Amir Chinael

Andriy Pavlovych

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Class Notes

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EECS 1520 Lecture Notes - Lecture 2: Jacquard Loom, Wilhelm Schickard, Blaise Pascal

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EECS 1520 Lecture Notes - Lecture 3: Eniac, John Vincent Atanasoff, Konrad Zuse

Claude shannon (1961-2001: 1937: introduced the app of the boolean logic in creating digital computing machines, 1(cid:1013)4(cid:1012): pu(cid:271)lis

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EECS 1520 Lecture Notes - Lecture 4: Apollo Program, Keypunch, Jack Kilby

Univac i: first commercial general-purpose computer, delivered in 1951, used to forecast the 1952 us presidential election, starting in the 1950s, comp

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EECS 1520 Lecture Notes - Lecture 5: Digital Data, Megabit, Probability Distribution

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EECS 1520 Lecture Notes - Lecture 6: Positional Notation, Natural Number, 5,6,7,8

Numbers: natural numbers, 0 and any number obtained by repeatedly adding one to it, ex. 100, 0, 45654, 32: negative number, values less than 0, indi(ci

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EECS 1520 Lecture 7: REPRESENTING NUMBERS 2

Arithmetic in binary: there are only 2-digit symbols in binary-0 and 1, adding in binary is like adding in decimal with the following exceptions, in de

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EECS 1520 Lecture Notes - Lecture 8: Octal, Binary Number, Junkers F.13

Short forms of binary: hexadecimal (base of 16, 4-bit) Using base 16 and 4-bit patterns is more effective. Since there are only 10 numeric digits, 6 le

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EECS 1520 Lecture Notes - Lecture 9: Radix Point, Decimal Mark, Scientific Notation

Fractions: binary to decimal ( 1 0 . Fractional part: (. 1 1)2 = 0. 75 (repeated division or standard decimal-to-binary conversion) (repeated multiplic

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EECS 1520 Lecture Notes - Lecture 11: Huffman Coding, Extended Ascii, Compression Ratio

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EECS 1520 Lecture Notes - Lecture 12: Binary Tree, Huffman Coding

Coded as: 1011110110111101001100100: this is where you need the prefix property. If we used a fixed-size bit string to represent each character (ex. 8

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EECS 1520 Lecture Notes - Lecture 13: Audio Codec, Compression Ratio, Huffman Coding

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EECS 1520 Lecture Notes - Lecture 14: Bit Rate, Joint Photographic Experts Group, Lossless Compression

Representing colour: colour is typically represented using the rgb colour model, three integers (in the range of 0-255) describe the amount of red, gre

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