avr,c51和pic八位单片机性能比较（Performance comparison of AVR, C51 and PIC eight bit single chip microcomputer）.docVIP

avr,c51和pic八位单片机性能比较（Performance comparison of AVR, C51 and PIC eight bit single chip microcomputer） AVR, C51 and PIC eight bit microcontroller performance comparison (Reprint) 2009-06-05 11:46 Abstract due to an internal eight bit microcontroller has the advantages of simple structure, small volume, low cost, used in some of the more simple controller is very wide. Even in the present century, in the SCM application, still occupy a considerable share. The eight bit microcontroller variety, this article only commonly used as a simple comparison in performance, for the readers for reference when in use. 1.51 series 51 eight bit microcontroller series of the most widely used is Intel, as the product of reasonable hardware structure, instruction system specification, coupled with the production history of long and has the advantages of First impressions are strongest. The world has many famous chip company purchased 51 chip core patented technology, and expand the performance on the basis of the chip, further perfect, has formed a huge system, until now still in the renovation, the microcontroller world raise a Babel of criticism of speculation. There has been speculation that the 51 chip may eventually form the standard MCU chip in fact. It is one of the 51 series of advantages from the internal hardware or software, a complete set of the operating system, called bit processor, or Boolean processor. It is not the object but a word or byte. It is not only a piece of some special function registers for processing, such as transfer, set and cleared, testing, but also a logic operation, its function is complete, easy to use. Although other types of single-chip has a processing function, but can be a logical operation is rare. In the 51 series chip RAM interval also opened up a special dual function address interval, sixteen bytes, unit address 20H to 2FH, which can be used as a byte processing, but also can be used for processing (for processing, 128 bits, the correspondi