Search results
Results from the WOW.Com Content Network
An eight-bit processor like the Intel 8008 addresses eight bits, but as this is the full width of the accumulator and other registers, this could be considered either byte-addressable or word-addressable. 32-bit x86 processors, which address memory in 8-bit units but have 32-bit general-purpose registers and can operate on 32-bit items with a ...
Smallest addressable unit of the machine that can contain basic character set. It is an integer type. Actual type can be either signed or unsigned. It contains CHAR_BIT bits. [3] 8 %c [CHAR_MIN, CHAR_MAX] — signed char: Of the same size as char, but guaranteed to be signed. Capable of containing at least the [−127, +127] range. [3] [a] 8 %c [b]
In theory, modern byte-addressable 64-bit computers can address 2 64 bytes (16 exbibytes), but in practice the amount of memory is limited by the CPU, the memory controller, or the printed circuit board design (e.g., number of physical memory connectors or amount of soldered-on memory).
The IEEE 1541-2002 standard specifies "B" (upper case) as the symbol for byte (IEC 80000-13 uses "o" for octet in French, but also allows "B" in English). Bytes, or multiples thereof, are almost always used to specify the sizes of computer files and the capacity of storage units. Most modern computers and peripheral devices are designed to ...
Various implementations of C and C++ reserve 8, 9, 16, 32, or 36 bits for the storage of a byte. [67] [68] [f] In addition, the C and C++ standards require that there be no gaps between two bytes. This means every bit in memory is part of a byte. [69] Java's primitive data type byte is defined as eight bits. It is a signed data type, holding ...
The DEC PDP-10, also 36-bit, had special instructions which allowed memory to be treated as a sequence of fixed-size bit fields or bytes of any size from 1 bit to 36 bits. A one-word sequence descriptor in memory, called a "byte pointer", held the current word address within the sequence, a bit position within a word, and the size of each byte.
A processor with 128-bit byte addressing could directly address up to 2 128 (over 3.40 × 10 38) bytes, which would greatly exceed the total data captured, created, or replicated on Earth as of 2018, which has been estimated to be around 33 zettabytes (over 2 74 bytes). [1] A 128-bit register can store 2 128 (over 3.40 × 10 38) different
The SIB byte is an optional post-opcode byte in x86 assembly on the i386 and later, used for complex addressing. If present, it appears immediately after the ModR/M byte, before any displacements. If present, it appears immediately after the ModR/M byte, before any displacements.