Stuff
is one character on the computer 4 bytes?
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KC2ZOF
Stuff
Most of the time it's one byte. In Unicode it's two.
No character takes up a bit. A bit has two possible values: 0 or 1.
This isn't very useful, so they decided to put 8 bits together to create a "byte". A byte has 256 possible values, which is much bigger than the two possible values of a bit. If we encoded characters as 1 byte each, we would have only 256 different characters.
Unicode uses two bytes per character, so the number of possible characters is increased to 65,536 (216). This is a much larger amount than 256.
Lowercase letters on the calculator take up two bytes because the first 256 characters (or tokens) are being used already (as commands, symbols and capital letters). I don't know why you needed to know that though… a useless piece of information for you!
there are 64 bit computers as well…
they are wokring on 128 bits… wich is kina useless imo, 8 byte- instructins take ALOT of space…
btw… the calc is 8 bit whit 16 bit adress buss?? weird..
okay… but how come SHA-256, which has outputs of 256 bits is 64 hex characters?
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KC2ZOF
the adress buss (the bus that defines the amount of flash rom) can be bigger than the other busses
edit: ehh… sha-xxx is an cryptographic hash function, wich is basecly a program… has noting to do whit the aboe senctice
hex=4 bits
256/4=64
F3= 1111 0011
so the outputs are just the 4 bit binary that are converted into characters?
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KC2ZOF
8 bit…..
yes, if you create an assembly file and type someting like this:
.db 0,1,2,3,4,5,6,7…..254,255
compile it, and then open it
you see all possible tokens for the calc (except 2 bytes)
Hexadecimal is a way of representing information (data, numbers). Basically, there are 16 different values for digits: 0-9 and A-F. So each digit can store one of 16 different values.
Note that 24 = 16. Basically, 4 binary bits make up one hexadecimal digit. Two hexadecimal digits make up a byte.
In general, on the computer, characters take up one byte. Occasionally a character will take up two or more. The reason why each hex digit only stores half a byte is because hexadecimal is restricted to only 16 of the characters on the computer.
oh… but how about when you actually show the hex number on the screen, in a string for instance?
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KC2ZOF
Well, a 4-digit hex string stores 2 bytes of information but takes 4 bytes to store on a computer, if you store it as a string. So, the string "FFFF" would take 4 bytes to store.
But anyway, storing hexadecimal as a string is inefficient. It's better to just store the information that the hexadecimal encodes as plain data.
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