Re: significance of bits

[prasad <prasadb@xxxxxxxxxxxxxxx>]

Arun Sharma wrote:

> But Goankar is right in that the general purpose registers on a 32 bit
> microprocessor will still be 32 bit (because they're also used for
> addressing virtual memory). But the data bus doesn't have to
> be 32 bit.

Well , the 8088 was a 16 bit CPU. Though the external data bus
may be smaller , internally , it is a 16 bit CPU. The internal
data bus width should determine the 'bitness'.

Reasons like lack of suitable/inexpensive memory
chips/peripherals will
affect external data bus width design.

- - Prasad

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