MicroTRAK - Universal Development / Training Kit for Microcontrollers
The ultimate training kit and project development platform with microcontrollers. Whether developing a new project with or learning about microcontrollers, you will find MicroTRAK a highly versatile carrier board with support for microcontroller systems with 8051, AVR, ARM, 6811, 6808, PIC®, Basic Stamp, Basic Tiger and others.

Telelogic Modeling Community: Whitepapers - UML, C/C++, OO Programming

paper    

Customized 8051 processors - suitable for a small quantity of units
Developers often think that although a customized design for their project would be quite interesting, this is only economically justifiable for a large quantity of pieces. The majority of electronic developments are only produced in batches for which an ASIC design would not be affordable.
preview: http://www.hitex.com   date: 10/1/2004

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How To Implement More Than 64k in 8051
It is totaly possible to implement as many code memory you want in the 8051, using some available port pins, or implementing a 74HCT573 8 bits latch (for a max of 16MB) or a 74HCT75 4 bits latch (for a max of 1MB eprom).
preview: http://www.ustr.net  

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Interfacing the Keyboard to 8051 microcontroller
The key board here we are interfacing is a matrix keyboard. This key board is designed with a particular rows and columns. These rows and columns are connected to the microcontroller through its ports of the micro controller 8051. We normally use 8*8 matrix key board. So only two ports of 8051 can be easily connected to the rows and columns of the key board. When ever a key is pressed, a row and a column gets shorted through...
preview: http://www.electrosofts.com  

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The 8051 Simulator for Lecturers and Students
Do you want to learn about microcontrollers and embedded systems? Are you studying the 8051 microcontroller? Do you want to test your code for communicating with peripherals without having to first build the hardware? Are you teaching an embedded systems course and would like your students to have access to a virtual 8051 training kit? If the answer to any or all of the above is true, then you've come to the right place. The...
preview: http://www.edsim51.com   date: 1/1/2002

compiler    

BASCOM51 BASIC Compiler for the 8051
BASCOM51 is a popular, Windows-based BASIC compiler for the 8051 micro-controller family. BASCOM51 includes: Micro-IDE - a Windows-based IDE ( also included MCS version of the IDE ) BASCOM51 8051 BASIC compiler 8051 Simulator Over 70 BASIC project examples Downloaders for many 8051 boards BASCOM51 Users Manual
preview: http://www.bipom.com  

compiler    

SDCC ANSI C compiler
SDCC is a Free ware , retargettable, optimizing ANSI - C compiler. The current version targets Intel 8051 and recently the Zilog Z80 based MCUs, it can be retargeted for other 8 bit MCUs or PICs. The entire source code for the compiler is distributed under GPL. SDCC uses ASXXXX & ASLINK a Free ware, retargettable assembler & linker.
preview: http://sdcc.sourceforge.net  

compiler    

SourceForge - Compiler
SDCC is an open source retargettable, optimizing ANSI - C compiler. The current version targets the Intel 8051, Zilog Z80 and Dallas 80C390 MCUs. Atmel AVR support coming soon.
preview: http://sourceforge.net