The 8051 is an accumulator-based design with 255 instructions. A basic instruction cycle takes 12 clocks; however, Dallas Semiconductor redesigned the instruction-execution circuitry to reduce the ...

The first optical mice had to be used on a specially printed mousepad with a printed grid that the four-quadrant infrared sensor could detect. Later, mice swapped the infrared sensor for an ...

January 30, 2001, DesignCon, Santa Clara, California - Semiconductor intellectual property (IP) provider CAST, Inc. today announced the availability of two new microprocessor cores, the R8051 and the ...

The MCS 151 and 251 cores are binary-code-compatible with the 8051. (The 251 has additional instructions.) The 151 maintains the 80C51 accumulator-based core compatibility, and the 251 is a ...