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As quoted from Google Books, "Word size refers to the number of bits that a microprocessor can manipulate at one time."
depends on your processor type and the workload on it.
Parallelism
It means how fast something changes, and is obtained by dividing some quantity by a unit of time. Examples of rates: Velocity is distance / time. Acceleration is velocity / time. Bandwidth is number of bits transferred / time.
Perhaps you mean 4 bits at a time, I guess its a nibble
As quoted from Google Books, "Word size refers to the number of bits that a microprocessor can manipulate at one time."
Word length is the number of bits that can be processed at one time.
The number 64 in the Nintendo 64 refers to how many bits the CPU can process at a time. Many people mistakenly think the 64 refers to the storage space, but that is incorrect.
The number of bits that can be processed at one time is known as a processor's word width (but other names are also used, such as the processor's bus width).The word width varies between processor models. Early processors processed 4 bit words, then 8-bit processors became common. Today's processors tend to support 16, 32 and 64 bit words. The word width is not necessarily a power of two; some processors are designed for 24-bit words, for example.
In the computer networking industry the abbreviations BER mean Bit Error Rate. BER is the percentage of bits with errors collected divided by the total number of bits that have been transmitted, received or processed during a recorded time period or time frame.
Bit Interval: The time required to send one signal bit. Bit Rate: The number of bits that are conveyed or processed per unit of time. (Example: 100MB/sec)
8bit 16 bits 32 bits and 64 bits and 128 bits imply a broadside [parallel] output of that many bits of digital information on a buss output. these bits represent a word output. therefore the longest the word the more information can be processed at a time imply more bits the faster the computer or data flow.
Rate refers to frequency, while size refers to the amount. Thus, Sampling Rate is measured in Hertz (number of times per second a sample is taken), and Sampling Size is measured in Bits (number of binary digits of information taken at a single time). Thus, if you Sample at 10 Hz/8 bits, that means you take 8 bits of information, 10 times per second.
Bit rate would be the number of bit processed per time frame, normally per second Old modems commonly worked as 4800 Baud or 9600 Baud which would be 4800 bits per second and 9600 bits per second respectively
That will depend on both the architecture and implementation of the CPU.The maximum number of bits that a CPU may process at once usually depends on its "register" size, but there are many other variables that influence and change this limit for a specific CPU. For example, a 64 bit processor may operate on 64 bits at once. Some processors may also have subprocessors that can handle even more bits at once, but those are usually not included in the processor's "bit size". As an example, Intel processors have MMX instructions that can handle up to 64 bits simultaneously, although the primary CPU is 32 bit. The largest known processor at the time of this answer operates on 128 bits at once, and there are rumors of even larger bit-processors on the horizon, although their power is largely unnecessary at this time. Some processors also have multiple parallel function units that can be running at the same time (e.g. integer units, floating point units, load/store unit) each of which processes a word of the appropriate number of bits for its data type simultaneously with all the other function units, this dramatically increases the possible number of bits processed at one time with no increase in "register" size. There have also been CPU architectures with large word sizes but some implementations of those architectures processed the bits in smaller groups to save cost (e.g. IBM System 360/30 like all System 360s had a 32 bit register size but processed it only 8 bits at once). Many early computers used serial ALU implementations, one that I know of had a 48 bit "register" size (stored in a continuously recirculating memory) but processed that only 1 bit at a time in the serial ALU (2 bits at a time when executing its square root instruction, but it still had to wait 2 bit times to get those 2 bits from the recirculating memory, so there was no speed increase).
the number of bits process at one time
Bandwidth