RAM is read and written in 64-bit chunks, and the processor just uses a bit of magic to make it look like you can address individual 8-bit bytes. For older architectures, "byte" indicated the size of the data bus, and as the original question states, a lot of …

2012年7月23日 · An 8-Bit character can only have 256 possible characters. Whereas a 16-bit can have 65,536. A 32-bit character can have 4,294,967,296 possible characters. A character set that large should be able to store every possible character in the world. Whereas a 8-bit character set can only store enough characters for the English language.

2021年12月9日 · A byte is at least large enough to contain any member of the basic execution character set and the eight-bit code units of the Unicode UTF-8 encoding form and is composed of a contiguous sequence of bits, the number of which is implementation- defined. So, it's at least 8 bits. But it could be more.

2021年8月30日 · In plain old seven bit ASCII formats, or 8 bit encodings such as the various ISO-8859-1 ("ISO Latin-1") encodings, these character codes occupy one byte each. The character string 65535 could easily require more bytes of storage in memory if the string is made up of a character code point type that is wider than a byte.

2018年9月16日 · It doesn't really matter if a 32 bit data bus is implemented as 32 wires that each transport 1 bit per cycle, or one wire that transports 32 bits serially per cycle, or anything in between. The important part is that there is necessarily some limit on the amount of data that can be transferred per cycle , whether this is 16, 32, or 64 bits.

2016年6月1日 · Are the extra efforts to be able to use bit wise addressing and operations worth this? I think most Data is very suitable to be stored in multibles of 8 bits. e.g. ASCII, little values in 8,16,32,64 bits. So you gain very few by adding bit wise addressing but you get a much more compicated CPU, momory handling, caching, ... .

2021年4月24日 · Imagine that you have an 8-bit computer with 8-bit addresses, wired to a single RAM chip. Inside the chip, a multiplexer decodes the 8-bit address to one of 256 values, effectively turning on one of 256 wires. That connects a particular group of eight cells in the chip to the data bus, enabling the processor to read or write them. So far so good.

2013年1月29日 · This isn't strictly speaking true. Some languages (like C/C++) provide ways of storing boolean values as single bits, if these bits are bundled in a single byte. In other words, in C, you can store eight booleans in a byte. But few ever use this since memory is cheap and processors manipulate data in 8/16/32/64 bit chunks. –

2012年12月10日 · For example, you can store 256 different values in an 8 bit number, so 8 bits can address 256 bytes. 2 10 = 1024, so you need 10 bits to address every byte in a kilobyte. Likewise, you need 20 bits to address every byte in a megabyte, and 30 bits to address every byte in a gigabyte. 2 32 = 4294967296, which is the number of bytes in 4 gigabytes ...

2023年10月23日 · Int wasn’t 16 bit to support PDP/11 but to support a machine popular at the time. Today, we support machines that are popular today. You can get ARM-Cortex 64 bit processors for very little money. So today you want a processor that works well for 64 bit processors. Int = 16 bit practically forces char=8, short=16, long=32 and long long = 64 bit.