The Intel 8051 was a Harvard architecture single chip microcontroller (µC) developed by Intel in 1980 for use in embedded systems. It was extremely popular in the 1980s and early 1990s, but today it has largely been superseded by a vast range of enhanced devices with 8051-compatible processor cores that are manufactured by more than 20 independent manufacturers including Atmel, Maxim IC (via its Dallas Semiconductor subsidiary), Philips, Winbond, and Silicon Laboratories. Intel's official designation for the 8051 family of µCs is MCS 51....Go

The 8051 is an 8-bit microprocessor originally designed in the 1980's by Intel that has gained great popularity since its introduction. Its standard form includes several standard on-chip peripherals, including timers, counters, and UART's, plus 4kbytes of on-chip program memory and 128 bytes (note: bytes, not Kbytes) of data memory, making single-chip implementations possible. Its hundreds of derivatives, manufactured by several different companies (like Philips) include even more on-chip peripherals, such as analog-digital converters, pulse-width modulators, I2C bus interfaces, etc. Costing only a few dollars per IC, the 8051 is estimated to be used in a large percentage (maybe 1/2?) all embedded system products....Go

This tutorial explains how to get a National Semiconductor 8390 compatible ethernet chip Network Interface Card (NIC), connected to an Intel 8031/32 compatible device for communications around a Local Area Network (LAN). Many NICs emulate or use an 8390 chip. Some examples are RTL8019, NEx000 cards. If you can use the network card in a PC using a NEx000 driver, then it should work. NICs based on other chipsets are not supported yet, but may be implemented at a later date....Go

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)....Go

Learn yourself, how to write a simple program using C language for the 89C2051/89C4051. Write a C source program, compile, and download the HEX code to the chip directly, connect DC adapter, see what happen after power up the board. No need ICE, in-circuit programmer, everything can be made by yourself e...Go

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