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Aloha

Your ASCII (“Text”) File. What you see:. Aloha. What the computer sees:. 01000001 01101100 01101111 01101000 01100001. binary number columns 128 64 32 16 8 4 2 1. Binary numbers. 0. 1. 10. 01000001011011000110111101101000. binary number columns 1024 512 256 128 64 32 16 8 4 2 1.

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Aloha

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  1. Your ASCII (“Text”) File What you see: Aloha What the computer sees: 0100000101101100 01101111 01101000 01100001 binary number columns 128 64 32 16 8 4 2 1

  2. Binary numbers 0 1 10 01000001011011000110111101101000 binary number columns 1024 512 256 128 64 32 16 8 4 2 1

  3. Your ASCII (“Text”) File What you see: Aloha What the computer sees: 0100000101101100 01101111 01101000 01100001 binary number columns 128 64 32 16 8 4 2 1

  4. Bits and Bytes Single digit = 1 bit (Binary digIT ) 01000001

  5. Bits and Bytes 01000001 entire 8 digits = 1 byte

  6. ASCII Codes A B C a b c 1 2 3 ! (CR) (LF) 128 characters A (Bell) 7 bits per byte “Ding!” What about é or ñ? 8 bits per byte

  7. Your ASCII (“Text”) File What you see: Aloha w o r l d ! space What the computer sees: 0100000101101100 01101111 01101000 01100001 00100000 01110111 01101111 01110010 01101100 01100100 00100001 ASCII code 104 for h (8-bit byte) binary number columns 128 64 32 16 8 4 2 1

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