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You are here: 8051 Tools Development Board Old Versions Rev 1 (1992) More Ideas

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8051 Board, $79
LCD 128x64 Pixel, $29
LCD 16x2 Char, $14
Serial Cable, $5
9 Volt Power, $6
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8051 Tools
Main Page
Development Board
Code Library
89C2051 Programmer
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Rev 4
New Rev 4 Board
A newer version (Rev 4) of this circuit board is available. Rev 4 includes a faster CPU, more memory, more I/O and an optional LCD. We recommend you use Rev 4 for new projects. We are keeping these very old pages on-line for reference to assist people who build the original version of the 8051 development board.
The very old design is difficult to troubleshoot due to the use of an external 27C64 EPROM for the monitor program. We highly recommend you use the new design for any new projects.

Where To Go From Here

some simple example programs... some notes about how to program the 8051.

some simple circuits to interface leds, speakers, relays, etc to port1 and the 82C55 lines.

some hints about the 8051's built in timers, interrupts, UART and how to do some neat tricks with them.

some hints about how to migrate a design from the development board to a dedicated system... and common errors that turn up when PAULMON is not used anymore.

Paul's Sample 8051 Development Board Design
Last updated: February 24, 2005
Statue: this page still need a lot of work
Suggestions, comments, criticisms, things you want?? <>