<processor> A microcontroller
developed by Intel in 1980 for use in embedded products and still (1999) one of the most popular microcontrollers.
The 8051/8031 cores are used in over 100 devices from 10 independent manufacturers such as Dallas and Philips.
[What is the difference between the 8031/8051/8052?]
See also CAS 8051 Assembler
8051 FAQ (http://www.ece.orst.edu/~pricec/8051/faq/index.html).
The 8031/51 series microcontroller (http://www.rehn.org/YAM51/).
Intel MCS51 series microcontrollers (http://www.intel.com/design/mcs51/).