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The bit is the most basic unit of information in computing and digital communication. The name is a portmanteau of binary digit. [ 1 ] The bit represents a logical state with one of two possible values. These values are most commonly represented as either "1" or "0", but other representations such as true / false, yes / no, on / off, or + / − ...
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a "bit" is atomic: the smallest unit of storageA bit stores just a 0 or 1"In the computer it's all 0's and 1's" ... bitsAnything with two separate states can store 1 bitOne 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 '$'How many different patterns can be made with 1, 2, or 3 bits? 1. 3 bits vs. 2 bits 2. Consider just the leftmost bit 3. It can only be 0 or 1 4. Leftmost bit is 0, then append 2-bit patterns 5. Leftmost bit is 1, then append 2-bit patterns again 6. 3-bits has twice as many patterns as 2-bits 1. In general: add 1 bit, double the number of patterns 2...
1 byte is group of 8 bits8 bits can make 256 different patternsHow to use the 256 patterns?How to store a number in a byte?"Byte" - unit of information storageA document, an image, a movie .. how many bytes?1 byte is enough to hold about 1 typed character, e.g. 'b' or 'X' or '$'All storage is measured in bytes, despite being very different hardwareASCII is an encoding representing each typed character by a numberEach number is stored in one byte (so the number is in 0..255)A is 65B is 66Each letter is stored in a byte, as below100 typed letters takes up 100 bytesWhen you send, say, a text message, the numbers are sentText is quite compact, using few bytes, compared to images etc.One byte works well for individual characters, but computers are also good at manipulating numbers.Integers are typically stored with either 4 or 8 bytes 4 bytes can store numbers between -2147483648 and 2147483647 8 bytes can store numbers between -9223372036854775808 and 9223372036854775807Adding in binary is just like normal addition with carrying But when you run out of bits you can't carry anymore Leftmost bit indicates sign, so carrying to the leftmost bit changes a number ffrom...Hexadecimal is commonly used as a shorthand notation to specify bit patterns. Since there are sixteen hexadecimal digits, each one can be used to specify uniquely a group of four bits. Table 2.1.1 shows the correspondence between each possible group of four bits and one hexadecimal digit. Table 2.1.1. Hexadecimal representation of four bits.
Try this experiment: Open up a new file in Notepad and insert the sentence, "Four score and seven years ago" in it. Save the file to disk under the name getty.txt. Then use the explorer and look at the size of the file. You will find that the file has a size of 30 bytes on disk: 1 byte for each character.
Jun 13, 2023 · A bit is the smallest unit of digital information and represents a binary value, either 0 or 1. On the other hand, a byte is a higher-level unit of data storage and communication, consisting of a group of 8 bits. Therefore, the logical answer to the question is that there are 1/8 (0.125) bytes in a single bit. In other words, it takes 8 bits to ...
For a computer system using a 32 bit-wide “data path,” a “word” would mean 32 bits. If the system used 16 bits as the standard grouping for binary quantities, a “word” would mean 16 bits. The terms playte and dynner, by contrast, always refer to 16 and 32 bits, respectively, regardless of the system context in which they are used.
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Interpretation of bits and bytes depends on context • meaning of a group of bits depends on how they are interpreted • 1 byte could be – 1 bit in use, 7 wasted bits (e.g., M/F in a database) – 8 bits representing a number between 0 and 255 – an alphabetic character like W or + or 7
