How To Understand µ-controller

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usmanfaisal

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hi
i want to understand the number of microcontrollers.
for example "89c51"
what does 'c' stands for?
what is '89'?
what is '51'?
can anyone tell me details about it?
i'll be grateful.
regards
USMAN
 
All of the early 8 bit Intel processors began with two digits in the range 80-89. The "c" is for CMOS in contrast to the earlier version which were NMOS. The 51 is an architecture variant, but the set of variants does not fill up the entire range of 00-99. The 8-bit variants I am aware of include
8008, 8041, 8048, 8051, 8080, 8085, 8086, 8088
​
There may be others, but I'm not aware of them.
 
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