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word size definitionThe number of bits that a CPU can process at one time. Processors with many different word sizes have existed though powers of two (8, 16, 32, 64) have predominated for many years. A processor's word size is often equal to the width of its external data bus though sometimes the bus is made narrower than the CPU to economise on packaging and circuit board costs.
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Microprocessors have internal data pathways and internal registers with a fixed number of bits. An 32 bit processor will process 32 bit words, a 64 bit processor will process 64 bit words. The internal registers are sized to accommodate the word length with a single transfer. Generally, the more bits a processor can handle, the faster it can run. Smaller microprocessors might only process only 8 bits or less.

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Q: Which number describes a computer's word size?
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What is the word size of a machine?

Word size of a computer may have different meanings depending on the computer's architecture.On computers with a fixed word size it is the number of binary bits lor decimal digits in its arithmetic registers (and usually its words in memory). On most fixed word size computers complete words are processed in parallel.On computers with a variable word size it is usually the number of bytes, alphanumeric characters, or decimal digits in a "word" in memory. Different "words" in memory may have different sizes depending on their use in the program, the size may be specified in a variety of ways: in the instruction, in a field in the data, etc. On variable word size computers the "words" are processed serially one byte, alphanumeric character, or decimal digit at a time.Some computers have both fixed and variable word size used in different instructions.


Computers with a larger word size can process less data in the same amount of time than computers with a smaller word size?

Processors with a smaller word size can process more data during each processor cycle.


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Modern Computers have a word size of 16, 32 or 64 bits.


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