+C51 refers to the Intel MCS-51 family of [Microcontroller](/wiki/Microcontroller) architectures, widely recognized for its enduring impact on [Embedded System](/wiki/Embedded_System) design. These 8-bit devices were foundational, often programmed using assembly or specialized C compilers.
+## See also
+- [8051](/wiki/8051)
+- [Microprocessor](/wiki/Microprocessor)
+- [Firmware](/wiki/Firmware)
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