At the smallest scale in the computer, information is stored together bits and bytes. In this section, we"ll learn exactly how bits and also bytes encode information.

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Bit

a "bit" is atomic: the smallest unit of storageA little stores simply a 0 or 1"In the computer system it"s every 0"s and 1"s" ... BitsAnything through two separate states can store 1 bitIn a chip: electric charge = 0/1In a hard drive: clues of North/South magnetism = 0/1A little bit is too little to be much useGroup 8 bits together to make 1 byteEverything in a computer system is 0"s and 1"s. The bit stores just a 0 or 1: it"s the smallest structure block of storage.

Byte

One byte = collection of 8 bitse.g. 0 1 0 1 1 0 1 0One byte can store one character, e.g. "A" or "x" or "$"

How many Patterns through N Bits? (demo)

How numerous different patterns deserve to be made through 1, 2, or 3 bits?Number the bits different Patterns
1 0 1
2 00 01 10 11
3 000 001 010 011 100 101 110 111
3 bits vs. 2 bitsConsider simply the leftmost bitIt deserve to only be 0 or 1Leftmost little is 0, climate append 2-bit patternsLeftmost bit is 1, then append 2-bit patterns again3-bits has twice as countless patterns together 2-bitsNumber that bits various Patterns
1 0 1
2 00 01 10 11
3 000 001 010 011 100 101 110 111
In general: include 1 bit, dual the variety of patterns1 little bit - 2 patterns2 bits - 4 3 bits - 84 bits - 165 bits - 326 bits - 647 bits - 1288 bits - 256 - one byteMathematically: n bits yields 2n patterns (2 to the nth power)

One Byte - 256 fads (demo)

1 byte is group of 8 bits8 bits can make 256 different patternsHow to usage the 256 patterns?How to keep a number in a byte?Start v 0, go up, one pattern every number, till run the end of patterns0, 1, 2, 3, 4, 5, ... 254, 255One byte have the right to hold a number between 0 and 255i.e. Through 256 different patterns, we have the right to store a number in the range 0..255 Really an excellent for storing characters/letters.

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Bytes

"Byte" - unit of info storageA document, an image, a movie .. How plenty of bytes?1 byte is enough to hold around 1 typed character, e.g. "b" or "X" or "$"All warehouse is measured in bytes, regardless of being an extremely different hardwareKilobyte, KB, around 1 thousand bytesMegabyte, MB, around 1 million bytesGigabyte, GB, around 1 exchange rate bytesTerabyte, TB, around 1 sunshine bytes (rare)

Bytes and also Characters - ASCII Code

ASCII is one encoding representing each typed personality by a numberEach number is save on computer in one byte (so the number is in 0..255)A is 65B is 66a is 96space is 32"Unicode" is an encoding because that mandarin, greek, arabic, etc. Languages, typically 2-bytes every "character"
32 space33 !34 "35 #36 $37 %38 &39 "40 (41 )42 *43 +44 ,45 -46 .47 /48 049 150 251 352 453 554 655 756 857 958 :59 ;60 63 ?64
65 A66 B67 C68 D69 E70 F71 G72 H73 I74 J75 K76 L77 M78 N79 O80 P81 Q82 R83 S84 T85 U86 V87 W88 X89 Y90 Z91 <92 \93 >94 ^95 _96 `97 a98 b99 c100 d101 e102 f103 g104 h105 i106 j107 k108 l109 m110 n111 o112 p113 q114 r115 s116 t117 u118 v119 w120 x121 y122 z123 124 126 ~

Typing, Bytes, and You

Each letter is save in a byte, as below100 typed letter takes up 100 bytesWhen you send, say, a text message, the numbers room sentText is fairly compact, using few bytes, contrasted to images etc.typed letters correspond to bytes in RAM

Numbers in Computers