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International Electronics and Technology Forum > Digital Electronics > Microcontrollers > 

What does 80 and 51 indicate in 8051 microcontroller and upon which basis the AT89S51 has been designated?

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Author Topic: What does 80 and 51 indicate in 8051 microcontroller and upon which basis the AT89S51 has been designated?  (Read 335 times)
Achyuth
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Posts: 2
« on: July 06, 2011, 10:04:16 AM »
Hello YAHOO,I need to prepare for my project viva and I wish to know the entire things of microcontrollers like types,manufactuing companies,how do they designate,hidden truths,special things and etc.Could you please help me in finding those answers?Also suggest related sites or books if any.
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Mark_J
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Posts: 22
« Reply #1 on: July 06, 2011, 10:26:11 AM »
The 80xx family of processors was the Intel 8-bit family.  Some were microprocessors, others were microcontrollers with built-in RAM and ROM.  The 8048 and 8051 were both microcontrollers and the 8051 became wildly successful.  It now has multiple vendors including Atmel which provides the AT89S51.  As far as I know, the '51 just implies that the 8051 is better than the 8048  (which it is).  The 8052 improves on the 8051.
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