1. 8051 series of micro controllers are made by which of the following companies? a) Atmel b) Philips c) None of the mentioned d) Both of the mentioned AnswerAnswer: d [Reason:] Atmel series AT89C2051 and Philips family P89C51RD2 are the two most common micro controllers of 8051 family. 2. AT89C2051 has RAM of: a) 128…