4314617
Description
Mind Map by aiden williams, updated more than 1 year ago
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Created by aiden williams
over 8 years ago
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Data Representation
- Binary
- Unsigned
- 00101011 = 43
- 0------- => Most
Significant Bit
(MSB)
- -------1 => Least Significant Bit (LSB)
- 2^n -1
- 8-Bit 0-255 (256
values)
- 8-Bit 0-255 (256
values)
- 0------- => Most
Significant Bit
(MSB)
- 00101011 = 43
- Signed
- Sign and magnitude
- -43 = 10101011
- MSB = Signed Bit
(1 = - , 0 = +)
- Rest = positive
number
- MSB = Signed Bit
(1 = - , 0 = +)
- -43 = 10101011
- 2s compliment
- binary number (59) l 00111011
one's compliment l 11000100
................................+1................
two's compliment = 01000101 (-59)
- binary number (59) l 00111011
one's compliment l 11000100
................................+1................
two's compliment = 01000101 (-59)
- Sign and magnitude
- Binary Coded Decimal
- 123 => 1 = 0001, 2 = 0010 , 3 = 0011
- -37 = 1011 , 0000 , 0011 , 0111
- Every digit has it's own binary representation
- 123 => 1 = 0001, 2 = 0010 , 3 = 0011
- Binary Arithmetic
- Addition
- 10011101 +
-------------------
11001110
-------------------
01101011
- 10011101 +
-------------------
11001110
-------------------
01101011
- Subtraction
- 43 +- (20) 43 = 00101011
..........20 = 00010100
.........-20 = 11101100
........43-20 = 00101011 +
..................11101100
................X00010111
- X = Arithmetic Flow
- X = Arithmetic Flow
- 43 +- (20) 43 = 00101011
..........20 = 00010100
.........-20 = 11101100
........43-20 = 00101011 +
..................11101100
................X00010111
- Multiplication
- 11100 * 101
-------------------
111100
-------------------
1000000
-------------------
1110000
-------------------
10001100
- Long Multiplication
- Long Multiplication
- 11100 * 101
-------------------
111100
-------------------
1000000
-------------------
1110000
-------------------
10001100
- Addition
- Unsigned
- Representation of chars
- ASCII (8-bit)
- UNICODE
(16 - bit)
- ASCII into Unicode (will work)
Unicode into ASCII(won't since file is
bigger)
- ASCII into Unicode (will work)
Unicode into ASCII(won't since file is
bigger)
- Unicode used more in general
purpose computers but because
ASCII is smaller it is used in
micro-computers like an Arduino
board
- ASCII (8-bit)
- Representation of Images
- Raster
- Stored in pixels
- Ex: 320 * 200 (8 bit) = 64000 * 1 byte (if 16 -bit *2 bytes)
- Storage depends on resolution
- (jpeg, gif, bmp, tiff, png)
- supports transparancy (kaxex bojod u grizi)
- supports transparancy (kaxex bojod u grizi)
- Stored in pixels
- Vector
- stored in shapes
- Image only resized quality is not restored
- (wmf , CAD)
- stored in shapes
- Raster
- Representation of Sound
- Wave for Audio
- MP3
- sampling rate directly proportional to quality (24bit - 48k quality)
- MP3
- MIDI
- Stores as a series of instrument and sounds on soundcard
- Synthesizers, soundcards
(Mother and Father to baby
Wub)
- Stores as a series of instrument and sounds on soundcard
- Wave for Audio
- Hexadecimal
- 0-9 read as integers
- 10-15 read as A-F
- 10-15 read as A-F
- Bin- Hex
Hex - Bin
- Kemm taqsamom go 4-bit
- Kemm taqsamom go 4-bit
- 23c=
16^2*2 +
16^1 + *3
16^0 * 12
572
-------
- Dec - Hex
- 350
- 21r l E
1 r .l 5
0 r l 1
- ans = 15E
- ans = 15E
- 21r l E
1 r .l 5
0 r l 1
- 350
- 0-9 read as integers
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