What's the difference between 32 bit processor and 64 bit processor

 

 First of we must understand what actually, BIT is.....

"A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1. Although computers usually provide instructions that can test and manipulate bits, they generally are designed to store data and execute instructions in bit multiples called bytes. In most computer systems, there are eight bits in a byte. The value of a bit is usually stored as either above or below a designated level of electrical charge in a single capacitor within a memory device.

Half a byte (four bits) is called a nibble. In some systems, the term octet is used for an eight-bit unit instead of byte. In many systems, four eight-bit bytes or octets form a 32-bit word. In such systems, instruction lengths are sometimes expressed as full-word (32 bits in length) or half-word (16 bits in length).

In telecommunication, the bit rate is the number of bits that are transmitted in a given time period, usually a second.  "

Taken from : http://searchcio-midmarket.techtarget.com/sDefinition/0,,sid183_gci213816,00.html

-----------------------------------------------------------------------------------------------------------
 What does windows 32bit means?and what does windows 64bit means?

 The terms 32-bit and 64-bit refer to the way CPU, handles information. The 64-bit version of Windows capable to handles large amounts of RAM and much more effectively than a 32-bit system.

What are the Advantages of a 64bit Processor?

1. The 64bit processor do better in term of performance then 32bit Processor.
2. Allowing for the addressing of more of RAM, 64-bit processing can improve video encoding and decoding, CAD, VMs and some other applications.
3. Ability to address memory amounts over four GB, and up to 16 exabytes

What are the Disadvantages of 64bit Processor?

1. You’re currently not able to take full advantage of the technology because the software vendors haven’t made the switch from 32-bit to 64-bit processors.
2. Most AMD Athlon 64 bit processors are expensive, with prices sure to go down in the future.