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MCS-51 - Wikipedia
Introduction to 8051 Microcontroller - GeeksforGeeks
8051 Microcontroller - Tutorial and Guide - CircuitsToday
Explore Intel’s history- The 8051 Microcontroller
Embedded Systems/8051 Microcontroller - Wikibooks
8051 Microcontroller Architecture - Electronics Hub
What is 8051 Microcontroller? Definition, Architecture and ...
Microcontrollers - 8051 Architecture - Online Tutorials Library
8051 Microcontroller Course - Technobyte
A History of Early Microcontrollers, Part 8: The Intel 8051