But since 1993 a byte has been defined as 8 bits, in order to have a standardized SI unit for data sizes. Hence the meaning of byte has changed from being an architecture-dependent unit to an architecture-independent standardized unit A byte is 8 bits because that's the definition of a byte. An ASCII character is stored in a byte because trying to use just 7 bits instead of 8 means you cannot address one character directly and would have to pack and unpack bit strings any time you wanted to manipulate text - inefficient, and RAM is cheap DarkAlman commented August 5, 2019. A byte is used to represent a single character in computer memory. a-z, A-Z, 0-9, !@ #$%^&* (), etc. 8 bits was chosen because happens to be enough possibilities (2^8 = 256) to comfortably represent all the necessary characters to display language As to why there are 8 bits in a byte comes down to technical inertia and good enough. It wasn't always like this and in the future binary as a basis for digital computing may be as out of date as vacuum tubes and electromechanical step relays are today
. I could be quite wrong though. coeju The earliest computers could only send 8 bits at a time, it was only natural to start writing code in sets of 8 bits. This came to be called a byte.It's essentially arbitrary, however 8 bits was. The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures. To disambiguate arbitrarily sized bytes from the common 8-bit definition, network protocol documents such as The Internet Protocol refer to an 8-bit byte as an octet. Those bits in an octet are. In practice, a byte is 8 bits in modern computers. Eight binary digits means 256 distinct numbers: so a byte generally represents a number in the range 0-255 (or possibly another range such as -128-127 when we need to allow negative numbers)
At some point, the early designers of the binary computer came up with the byte as the next standard unit above a bit. A byte is defined as 8-bits and can represent values from 0 to 255, or 2 to the power of 8 different values. A byte represents 256 different values. Byte == 25 . In early computing, a byte was the smallest number of bits used to encode a single character of text. You can't create a character with 1 bit, you need 8 of them
A byte is a collection of 8 bits. But why 8 bits? Historically, byte was used to represent/encode a single character of text in a computer. Consequently, the computer architectures took byte as the smallest addressable unit of memory in computing The 8-bit byte is something that people settled on through trial and error over the past 50 years. With 8 bits in a byte, you can represent 256 values ranging from 0 to 255, as shown here: 0 = 00000000 1 = 00000001 2 = 00000010... 254 = 11111110 255 = 1111111 Main Difference - Bits vs. Bytes. Bits and bytes are units of computer memory. The main difference between bits and bytes is that a bit is the smallest unit of computer memory, that has an ability to store a maximum of two different values whereas a byte, composed of 8 bits, can hold 256 different values.. What is a Bit. Computers are electronic devices, and they only work with discrete values In 2000, Bob Bemer claimed to have earlier proposed the usage of the term octet for 8-bit bytes when he headed software operations for Cie. Bull in France in 1965 to 1966. In France, French Canada and Romania, octet is used in common language instead of byte when the 8-bit sense is required, for example, a megabyte (MB) is termed a megaoctet.
As an example, to convert 5 kilobytes into bits, you'd use the second conversion to get 5,120 bytes (1,024 X 5) and then the first to get 40,960 bits (5,120 X 8). A much easier way to get these conversions is to use a calculator like a Bit Calculator Some people copied on the reply thought it a useful document, so (having done the hard work already) I add it to my site as further bite of history. I am way behind in my work, but I just cannot resist trying to answer your question on why a byte has eight bits. The answer is that some do, and some don't Everything in a computer is 0's and 1's. The bit stores just a 0 or 1: it's the smallest building block of storage. Byte. One byte = collection of 8 bits e.g. 0 1 0 1 1 0 1 0 One byte can store one character, e.g. 'A' or 'x' or '$' How Many Patterns With N Bits? (demo) How many different patterns can be made with 1, 2, or 3 bits [b]why 8 bits(not 9 ,etc) are 1 byte? It isn't always 8 sometimes it is 7 or 9. This is platform dependent. In the file limits.h a symbol CHAR_BIT is defined that is the number of bits in a byte for the platform
A group of nine related bits makes a byte, out of which eight bits are used for data and the last one is used for parity. According to the rule of parity, the number of bits that are ON 1 in each byte should always be odd Now, the question arises why we grouped only 8 bits to form 1 byte. As we have discussed, one byte can have 256 (0 to 255) possible values, and also the total number of characters in ASCII is 256. So, 8 bit can store any of the 256 characters ( 2 to the 8th power). That's why byte is used as a standard measurement unit This video is part of the Udacity course Networking for Web Developers. Watch the full course at https://www.udacity.com/course/ud25 As a single bit can either be 0 or 1, hence it is not of much use, as we can only represent two states using a single bit, but when you combine 8 bits together and you can have 256 different arrangements of 0's and 1's thereby making 1 byte more useful, as it can represent a number from 0 to 255 in binary form These consoles are based around 8-bit processors, which generally store and process data 8 bits at a time. In computer parlance, 8 bits make one byte. Many NES games have a limit of 255 on certain items (such as The Legend of Zelda's Rupee counter) because 255 is the maximum unsigned integer that can be stored in 8 bits of data
Therefore, to do that we need to use 3 bits to specify byte size (form 1 to 8). Also we need 6 bits to specify byte address inside the word, since if byte size is 1 bit, then it can be in any of 64 positions inside the word. You seam to be stuck by an implied byte position within a word Simple answer: A byte equals 8 bits. For example, 11011001 is a byte, with each character being a bit. It is simply a measurement for an amount of data. The terms 16-bit, 32-bit & 64-bit refer to.. A byte of data is eight bits, there may be more bits per byte of data that are used at the OS or even the hardware level for error checking (parity bit, or even a more advanced error detection scheme), but the data is eight bits and any parity bit is usually invisible to the software. A byte has been standardized to mean 'eight bits of data' binary data is the one which contains of only two diits to represent the information they used the convention of 8 bits =bytes may be because three digits combine to form a byte and in binary data..
A byte on the other hand is a unit of memory that usually contains 8 bits. This is because historically, 8 bits are needed to encode a single character of text. So when we measure the volume of information capable of being contained on, say, a hard drive, it makes sense to measure this as the total amount of memory available Due to the influence of several major computer architectures and product lines, the byte became overwhelmingly associated with eight bits. This meaning of byte is codified in such standards as ISO/IEC 80000-13. While byte and octet are often used synonymously, those working with certain legacy systems are careful to avoid ambiguity One byte is equal to eight bits. Even though there is no specific reason for choosing eight bits for a byte, reasons such as the usage of eight bits to encode characters in a computer, and the usage of eight or fewer bits to represent variables in many applications played a role in accepting 8 bits as a single unit Nope. Here's why: To make a 128 megabyte module, your memory module uses 16 units of 64 megabits, each of which calculates to 16 units x 64 megabits/8 bits per byte = 128 megabytes. That's It? Confusion about bits and bytes is common The earliest computers were made with the processor supporting 1 byte commands, because in 1 byte you can send 256 commands. 1 byte consists of 8 bits, which go together as one unit in storage, processing or transmission of digital information. 1 byte = 8 bits 1 bit = (1/8) bytes
A bit is a binary digit, the smallest increment of data on a computer. A bit can hold only one of two values: 0 or 1, corresponding to the electrical values of off or on, respectively. Because bits.. En byte är 8st bits. Orsaken till att det behövs ett ord för 8st bits är att just 8st bits är en otroligt vanlig kombination av antal bits när man lagrar saker i datorer. Exempelvis kan en vanlig bokstav behöva 8st bits när man lagrar den. Så grunden till allt är alltså denna formel: 1 Byte = 8 bits. 1 bit är ett så litet värde And as other answers have stated, 8 bits hasn't always been completely synonymous with a single byte. (And to be completely pedantic, 8 bits aren't exactly the same thing as a byte on anything, since they could each belong to different bytes, if you just pick them out randomly. A byte is technically an ordered collection of bits.
1 byte is 8 bits, and can thus represent up to 256 (2^8) different values. For languages that require more possibilities than this, a simple 1 to 1 mapping can not be maintained, so more data is needed to store a character. Note that generally, most encodings use the first 7 bits (128 values) for ASCII characters A Byte is just 8 Bits and is the smallest unit of memory that can be addressed in many computer systems. The following list shows the relationship between all of the different units of data. Let's take a look at a simple text file I created called sample.txt Bytes are units of information that consist of 8 bits. Almost all computers are byte-addressed, meaning all memory is referenced by byte, instead of by bit. This fact means that bytes come up all. For a long time 8 bits ruled, part of the reason being the width of busses and the difficulty in making registers (and RAM) more than 8 bits wide (no point in 16 bit data if your registers are all 8 bit). 8 bits is rather nifty, and makes a lot of sense in Hex. 8 bits could hold your alphabet, numbers, drawing & control characters (ASCII), or 0 to 255 or +-127 Accessing more than 256 bytes of. 1 Bytes = 8 Bits: 10 Bytes = 80 Bits: 2500 Bytes = 20000 Bits: 2 Bytes = 16 Bits: 20 Bytes = 160 Bits: 5000 Bytes = 40000 Bits: 3 Bytes = 24 Bits: 30 Bytes = 240 Bits: 10000 Bytes = 80000 Bits: 4 Bytes = 32 Bits: 40 Bytes = 320 Bits: 25000 Bytes = 200000 Bits: 5 Bytes = 40 Bits: 50 Bytes = 400 Bits: 50000 Bytes = 400000 Bits: 6 Bytes = 48 Bits: 100 Bytes = 800 Bits: 100000 Bytes = 800000 Bits.
Casting a 32-bit integer to a 8-bit byte in Java will result in the remaining byte value only taking the low 8 bits of the original integer and discarding all the higher bits For example on an x86 processor there is an eax (32 bits), ax (16 bits) and a ah (8 bits) but no single bit register. So in order for it to use a single bit the CPU will have to do a read/modify/write to change the value. If it is stored as a byte a single read or write can be used to inspect/change the value What Does 8-Bit Mean? 8-bit is a measure of computer information generally used to refer to hardware and software in an era where computers were only able to store and process a maximum of 8 bits per data block. This limitation was mainly due to the existing processor technology at the time, which software had to conform with Hi! I do have 8 Boolean values which should be converted to 1 byte. how can I do that? like 10111010 → 186 Background, I have to send those 8 bytes via Serial to a relays Card tsa
because you can only write a bytes object (which is a less coherent way to say an array of 8-bit bytes) with write(). But there's no way I can find to turn an int into a byte, or byte object, or whatever this is. The bytes() method, with only an int as a parameter, returns an array of length int filled with 0x00 bytes The 4 bit ALU's tended to be combined to handle larger quantities, hence 8 bit bytes, 16 bit words, 32 bit double words, etc. There were some exceptions, such as the General Electric GE-600 mainframes, which had a 36 bit word. This supported both 6-bit and 9-bit bytes. Answer link Note that, it is not compulsory that 8-bits are used for a Byte in all the Systems. Number of bits used for a Byte is depends on the System Architecture. Commonly we use 8-bits for a Byte. WORDs. WORDs are also consecutive bits or bytes. This term mostly we use for CPU registers. Generally each WORD has length 16-bits
1 Byte is equal to 8 Bit (eight bit) 1 Bit is equal to 0.125 Byte (zero point one hundred and twenty-five b) 1 Byte is equal to 8 bits (eight bits) 1 Bit is equal to 1 bits (one bits) 1 Byte is equal to 8 Bit (eight bit) Byte is greater than Bit. Multiplication factor is 0.125. 1 / 0.125 = 8 2,226. 9. DaveC426913 said: One character is one byte because, when they decided, they figured 256 (2^8) characters was all they'd need. actually, i think they originally thought they only needed 128 characters. that's what the original ASCII code is. before that there were 6-bit codes that had fewer characters ModbusRTU - Why are 7 data bits bad for Modbus RTU. Modbus RTU is a binary protocol. It requires the use of all 8 bits in each character / byte that forms the message because there are many situations where the 8th bit is used. For example, an exception response has the 8th (most significant bit) set. If you wanted to read holding register.
4. I can think of two advantages to using 8-byte chunks: firstly, having the data aligned on an even boundary might be more efficent in term of the CPU you use. Secondly, you save three bits from the IP header on every IP packet you send, fragemented or not 역사 바이트(byte)라는 용어는 1956년 6월 워너 부츠홀츠(Werner Buchholz)가 창안하였는데, 당시 IBM 스트레치 컴퓨터의 초기 설계를 하고 있던 시기였으며, 비트 및 가변 필드 길이(VFL) 명령을 한 바이트 크기로 인코딩하려던 참이었다. 우연적으로 비트(bit)로 발음되지 않도록 바이트(byte)로 철자를. Char is always 1 byte wide - in C nomenclature char/byte is the smallest addressable memory cell, so in F28xxx its 16 bits. There's no way to force compiler to make char 8 bit (half byte). People deal with this by writing smarter functions. Think of translating on both PC and UC to common network format If we assume you are taking photos using the common setting of 24 bits, you will need three bytes of eight bits each to store a single pixel. This means that a 12 megapixel photo will require 288 million bits (12 million pixels x 24 bits each) or 36 megabytes (288 million bits divided by 8 bits per byte, divided by a million bytes per megabyte) Bits. Bit (b) is a measurement unit used in binary system to store or transmit data, like internet connection speed or the quality scale of an audio or a video recording. A bit is usually represented with a 0 or a 1. 8 bits make 1 byte. A bit can also be represented by other values like yes/no, true/false, plus/minus, and so on
This intrinsic helps access an 8-bit quantity off a memory location, and can be invoked as follows: __byte(array,5) = 10; b = __byte(array,20);-----this above text I copied from the manual of C2000 compiler . it says I can read a byte from an integer array. but I want access not only low byte but also high byte when I wan Bit. A bit is a value of either a 1 or 0 (on or off). Nibble. A nibble is 4 bits. Byte. Today, a byte is 8 bits. 1 character, e.g., a, is one byte. Kilobyte (KB) A kilobyte is 1,024 bytes. 2 or 3 paragraphs of text. Megabyte (MB) A megabyte is 1,048,576 bytes or 1,024 kilobytes. 873 pages of plain text (1,200 characters). 4 books (200 pages.
Bits and bytes are both units of data, but bytes are bigger. Every byte is made up of eight bits. This also means that any measurement written in bytes is eight times larger than the corresponding unit measured in bits. In other words, 1 megabyte (1 MB) = 8 megabits (8 Mb). And 1 gigabyte (1 GB) = 8 gigabits (8 Gb) A single byte is usually eight bits. Some early computers used six bits for each byte. Bits are the smallest unit of storage on a computer, a single on/off value. Bytes are often represented by the capital letter B, bits by a lower case b. A single typed character (for example, 'x' or '8') is stored in one byte Why do pointers take up 8 bytes on 64-bit computers, you ask? Thank you for clarifying the computer architecture. The 8-byte count taken up by pointers is crucially exclusive to 64-bit machines, and for a reason - 8 bytes is the largest possible address size available on that architecture why in 1 byte 8 bit why not 9 bit A byte stores an 8-bit unsigned number, from 0 to 255. For example for the number 0, the binary form is 00000000, there are 8 zeros (8 bits in total). for the number 255, the binary form is 11111111. A uint8_t data type is basically the same as byte in Arduino
Byte streams contain, well, bytes. Broken down into what it is actually, it is 8 bits composed of 1s and 0s. If it were representing a number, it would be any number from 0 to 255 (which, I may add, is no coincidence why the 4 numbers in an IP address always range from 0 to 255) In UTF-8 encoding, the code unit is 8 bits or 1 byte because a character is encoded in N bytes. The main idea behind UTF-8 was to encode all the characters that could possibly exist on the planet. Why wouldn't the designers have made the byte length two more than what it is? Ie. 117 instead of 115? 117*8 = 936 bits which is a common multiple of 6 and 8, which would mean no left over bits that need to be padded with zeros, and would mean the final char could be one of 64 values instead of one of 16. Thus increasing the security Among other reasons, 1 byte is not always the equivalent of 8 bits. It is on all major desktops, but there are other types of computers (and there have been others in the past). Also, there is no requirement that sample sizes be a whole number of bytes If your line is idling low and the first bit you want to send is low, you have the same problem. That means you need some way to distinguish the first bit. Both of these problems are solved in the case of UART by using start and stop bits. The data that is being sent is split into packets of a few bits (e.g. 8 bit)