With the major mobile phone manufacturers now promoting the advantages of mobile phone 64-bit processors, the new vocabulary of mobile phone processor bits that we have not known before has gradually become familiar to us, what is the mobile phone 64-bit processor? What is the difference between it and the 32-bit processor? Let me explain it in detail.
What is the bit of the CPU?
The CPU bit refers to the amount of data that can be processed at one time, 1 byte = 8 bits, and the 32-bit processor can process 4 bytes of data at a time. Then, 64-bit processors can process 8 bytes at a time, which is twice the processing rate of 32-bit processors.
So what is the difference between 64-bit and 32-bit?
In fact, the concept of the number of digits in the mobile phone processor and the computer processor is the same, here Xiaobian uses the computer's processor as a demonstration. Some people who know something about the CPU probably know PenTIum 3 and PenTIum 4, and understand that the i386 processor brought the processor from 16 bits to the 32-bit era 20 years ago.
After nearly 30 years of testing, the processor has now jumped to 64-bit, which can increase the frequency from 1GHz to 3GHz. If the increase in frequency is to increase the speed limit of a 4-lane expressway from 120 km to 360 km, then the upgrade from 32-bit to 64-bit is to upgrade the highway from 3 times the speed limit from 4 The driveway has been widened to 8 lanes. In other words, the capacity of this road has doubled and reached a qualitative leap.
What does this promotion have on the phone?
The values ​​represented inside the computer are ranged, the decisive factor being the registers of the CPU. He is the smallest unit of computer processing value. If the register is 32-bit, then the range of numbers that he can represent is at most 2 to the power of 32, that is, the range is 32 to 0 to 32, if the register is 64-bit. In the words, it is obvious that the range of representation is 64 0 to 64 1s.
The range of representation of the number is large, so the accuracy of the calculation is improved. Of course, this requires the support of the operating system, just like a sports car can run 300 kilometers per hour, but the driver will only open low-end, good resources are wasted.
In addition, I believe everyone knows that 32-bit systems can only recognize 4g of memory, while 64-bit systems can recognize more than 4g of memory. That's because memory is made up of many small units. In order to get the data in memory, you need to number each unit, just like a home address. The unit number as the memory is stored in a special register. The maximum address that the 32-bit system can represent is 2 to the 32nd power. The total number of unit addresses that can be represented by the same 64-bit system is 2 to the 64th power.
From 32-bit to 64-bit, the speed, performance, and efficiency of mobile processors have increased. With the rapid development of 64-bit software, more mobile phones equipped with 64-bit processors can also achieve maximum performance. What you can imagine in 2015 is that the 64-bit processor model will expand again and go deeper into the wider corner.
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