hardware_software

hardware_software - Two Hex Digits ASCII Hex Binary C 43...

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CS 170: 01000011010100110010000000110001 001101110011000000111010 Prof. Jim Appenzeller speaker@rci.rutgers.edu
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Digits and PandA 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Do digits matter? To Be or Not to Be Simplest way to describe the physical world is with a Yes or No type of description. Logic is based on True and False If digits don’t matter, then PandA can be represented by anything
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Representing Analog Information Digitally Analog Sound Wave Digital Representation of Sound Wave Digit
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Digits in a Computer There are 10 types of people in the world, those who understand binary and those who don’t. Binary
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Digits in a Computer Hexadecimal One Hex Digit Four Binary Digits A ????
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Digits in a Computer ASCII One ASCII Digit Eight Binary Digits
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Unformatted text preview: Two Hex Digits ASCII Hex Binary C 43 01000011 S 53 01010011 20 00100000 1 31 00110001 7 37 00110111 30 00110000 : 3A 00111010 Under the Hood ALU Control Input Output Memory Anatomy Cycle Instruction Fetch Instruction Decode Data Fetch Instruction Execute Result Return 9-8 Bits, Bytes and RAM Digital Wave 1 Byte Slice of Wave Long Term Persistent Storage Hard disks Mechanism Speed Capacity Long term persistent storage Other Storage (Archival Memory) Magnetic Tapes CDs o Read o Write (burn) DVDs Flash Media A Computers View of Software Layers of Software File System Example File Names my_file.html (GOOD) my_doc.docx (GOOD) My Docment.doc (Could be a problem) something_else.xls...
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hardware_software - Two Hex Digits ASCII Hex Binary C 43...

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