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

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Bit

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

Byte

One byte = arsenal of 8 bitse.g. 0 1 0 1 1 0 1 0One byte have the right to store one character, e.g. "A" or "x" or "$"

How plenty of Patterns v N Bits? (demo)

How numerous different patterns can be made with 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 outward bitIt have the right to only be 0 or 1Leftmost bit is 0, climate append 2-bit patternsLeftmost bit is 1, climate append 2-bit patterns again3-bits has twice as countless patterns as 2-bitsNumber of bits different Patterns
1 0 1
2 00 01 10 11
3 000 001 010 011 100 101 110 111
In general: add 1 bit, dual the number of patterns1 little - 2 patterns2 bits - 4 3 bits - 84 bits - 165 bits - 326 bits - 647 bits - 1288 bits - 256 - one byteMathematically: n bits returns 2n trends (2 to the nth power)

One Byte - 256 patterns (demo)

1 byte is team of 8 bits8 bits can make 256 different patternsHow to use the 256 patterns?How to store 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 can hold a number between 0 and also 255i.e. Through 256 different patterns, we have the right to store a number in the selection 0..255 Really an excellent for save on computer characters/letters.

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Bytes

"Byte" - unit of information storageA document, an image, a movie .. How many bytes?1 byte is sufficient to hold about 1 typed character, e.g. "b" or "X" or "$"All warehouse is measure in bytes, regardless of being an extremely different hardwareKilobyte, KB, around 1 thousands bytesMegabyte, MB, around 1 million bytesGigabyte, GB, about 1 billion bytesTerabyte, TB, about 1 trillion bytes (rare)

Bytes and Characters - ASCII Code

ASCII is an 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 one encoding because that mandarin, greek, arabic, etc. Languages, commonly 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 stored in a byte, as below100 typed letters takes increase 100 bytesWhen you send, say, a message message, the numbers space sentText is quite compact, using few bytes, compared to photos etc.typed letter correspond to bytes in RAM

Numbers in Computers