Wats is the mean of bit in computer science, wats the difference b/w 32 bit n 64 bit processor?

Question

Bit processor

Answer 1

32 bits of difference

Answer 2

A bit is 8 bytes combined together, when it comes to the CPU's, the easiest way to explain it is that the 64 bit is better, more expensive, and much much faster, however the 32 bit will still get the job done. Only reason you might consider the 64 is if you're into extreme video editing, highly intensive photo editing, or a hardcore gamer.



When someone has the 64, THEY KNOW, gives you bragging rights basically lol.

Answer 3

Let's keep this REAL simple: 32 and 64 is the width of data that a CPU can grab in one clock cycle.



This has been going on since intel's 4-bit 4004. From there CPUs went to 8 bit, 16 bit and then 32 bit processors. And now, 64.



And yes, give'em time. I suspect that 128 bitters are on drawing tables right now. ;-)



@CHEDDAR "A bit is 8 bytes combined together"



Ummm...you got that one backwards. A byte is 8 bits.

and FWIW, a nybble is 4 bits. a word is 16 bits, or 2 bytes. A d-word (double word) is 32 bits, 2 words, or 4 bytes.



Then there's q-words...64 bits, 4 words, 8 bytes - and this is how much data 64 bit CPUs can grab off the data bus in one gulp.

Answer 4

A bit (from wikipedia):

In computing and telecommunications a bit is a basic unit of information storage and communication (a contraction of "binary digit"). It is the maximum amount of information that can be stored by a device or other physical system that can normally exist in only two distinct states. These states are often interpreted (especially in the storage of numerical data) as the binary digits 0 and 1. They may be interpreted also as logical values, either "true" or "false"; or two settings of a flag or switch, either "on" or "off".



The basics of 32-bit and 64-bit process comes to how many channels of information a process can handle in a given space. There are several other aspects to their differences such as drives, software builds, etc. For more information see your local Google portal.

Answer 5

32 vs 64 bit



A change from a 32-bit to a 64-bit architecture is a fundamental alteration, as most operating systems must be extensively modified to take advantage of the new architecture. Other software must also be ported to use the new capabilities; older software is usually supported through either a hardware compatibility mode (in which the new processors support the older 32-bit version of the instruction set as well as the 64-bit version), through software emulation, or by the actual implementation of a 32-bit processor core within the 64-bit processor (as with the Itanium processors from Intel, which include an x86 processor core to run 32-bit x86 applications). The operating systems for those 64-bit architectures generally support both 32-bit and 64-bit applications[11].



One significant exception to this is the AS/400, whose software runs on a virtual ISA, called TIMI (Technology Independent Machine Interface) which is translated to native machine code by low-level software before being executed. The low-level software is all that has to be rewritten to move the entire OS and all software to a new platform, such as when IBM transitioned their line from the older 32/48-bit "IMPI" instruction set to 64-bit PowerPC (IMPI wasn't anything like 32-bit PowerPC, so this was an even bigger transition than from a 32-bit version of an instruction set to a 64-bit version of the same instruction set).



While 64-bit architectures indisputably make working with large data sets in applications such as digital video, scientific computing, and large databases easier, there has been considerable debate as to whether they or their 32-bit compatibility modes will be faster than comparably-priced 32-bit systems for other tasks. In x86-64 architecture (AMD64), the majority of the 32-bit operating systems and applications are able to run smoothly on the 64-bit hardware.



Sun's 64-bit Java virtual machines are slower to start up than their 32-bit virtual machines because Sun has only implemented the "server" JIT compiler (C2) for 64-bit platforms.[12] The "client" JIT compiler (C1), which produces less efficient code but compiles much faster, is unavailable on 64-bit platforms.



Speed is not the only factor to consider in a comparison of 32-bit and 64-bit processors. Applications such as multi-tasking, stress testing, and clustering—for HPC (high-performance computing)—may be more suited to a 64-bit architecture when deployed appropriately. 64-bit clusters have been widely deployed in large organizations such as IBM, HP and Microsoft, for this reason.

Answer 6

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Answer 7

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