Friday, May 20, 2011

PIC Microcontroller


The microcontrollers played revolutionary role in embedded industry after the invention of Intel 8051. The steady and progressive research in this field gave the industry more efficient, high-performance and low-power consumption microcontrollers. The AVR, PIC and ARM are the prime examples. The new age microcontrollers are getting smarter and richer by including latest communication protocols like USB, I2C, SPI, Ethernet, CAN etc.   

History:
The PIC microcontroller was developed by General Instruments in 1975. PIC was developed when Microelectronics Division of General Instruments was testing its 16-bit CPU CP1600. Although the CP1600 was a good CPU but it had low I/O performance. The PIC controller was used to offload the I/O the tasks from CPU to improve the overall performance of the system.

In 1985, General Instruments converted their Microelectronics Division to Microchip Technology. PIC stands for Peripheral Interface Controller. The General Instruments used the acronyms Programmable Interface Controller and Programmable Intelligent Computer for the initial PICs (PIC1640 and PIC1650). 

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