Intel 8051 Another family of microcontroller is the Intel 8051 family. The basic 8051 microcontroller has four parallel input/output ports, port 0, 1, - ppt video online download
Intel MCS-51 - Hands-On Embedded Programming with C++17 [Book]
microcontroller - Intel 8052 (and friends) minimum set up - Electrical Engineering Stack Exchange
Wouter's page: 8052 BASIC Single Board Computer
Intel's 8052, an 8051 with Basic built in - Hardware - Retro Computing