MDE 8051 Trainer


The 8051 trainer is designed to accompany the textbook “The 8051 Microcontroller and Embedded Systems” by Muhammad Ali Mazidi, Janice Gillespie Mazidi, and Rolin D. McKinlay.

The MDE 8051 trainer board is a powerful single-board microcontroller trainer based on the Maxim® DS89C4XX.

The kit includes:

  • The 8051 Trainer board
  • Power supply
  • Serial cable
  • Wire kit w/ ten 6″ jumper wires



This board has been discontinued, but you can purchase the remaining stock from our distributor NKC Electronics.

To learn how to test and program your 8051 trainer, please visit: the MicroDigitalEd website.


Processor/IC: Maxim DS89C4XX


  • Two full-duplex serial ports
  • All ports accessible via male & female headers

Programming: In-system programmable via serial port


  • Serially programmable (using PC HyperTerminal, no need for external EPROM burner)
  • Dual serial ports
  • Integrated digital I/O (8 switches and 8 LEDs)
  • All ports accessible via male & female connectors
  • Onboard power supply
  • Connects to serial ports of PC
  • DS89C4XX Features:
    • 8051 Pin- and Instruction-Set Compatible
    • Four Bidirectional I/O Ports
    • Three 16-Bit Timer Counters>
    • 256 Bytes scratchpad RAM
      • On-Chip Memory
      • 16KB-64KB Flash Memory
      • In-system programmable via Serial Port
      • 1KB SRAM for MOVX
    • ROMSIZE Feature
      • Selects Internal Program Memory Size from 0 to 16K
      • Allows Access to Entire External Memory Map
    • High-Speed Architecture
      • 1 clock-per machine cycle
      • DC to 33 MHz operation
    • Two full-duplex serial ports
    • Programmable watchdog timer