Embedded Systems Training

ARM  is a family of instruction set architectures for computer processors which is based on a reduced instruction set computing (RISC) architecture .It was developed by British company ARM Holdings. A RISC-based computer design approach means ARM processors require significantly fewer transistors than typical processors in average computers. This approach reduces costs, heat and power use. These are desirable traits for light, portable, battery-powered devices—including smartphones, laptops, tablet and notepad computers), and other embedded systems. A simpler design facilitates more efficient multi-core CPUs and higher core counts at lower cost, providing higher processing power and improved energy efficiency for servers and supercomputers. SOME FACTS ON ARM 7 In 2005, about 98% of all mobile phones sold used at least one ARM processor. The low power consumption of ARM processors has made them very popular: 37 billion ARM processors have been...

Interview Questions on 8051 1. What is meant by micro controller in embedded Systems ? Microcontroller is a small chip that has in-build Micro processor, memory, ports, timers and converter. Micro controllers are designed for specific use. For instance, micro controller in TV remote is mainly designed for controlling TV. Embedded Systems 2. List out the features of 8051 micro controller in embedded Systems ? 40 Pin IC. 128 bytes of RAM. 4K ROM. 2 Timers (Timer 0 and Timer 1). 32 Input/ Output pins. 1 serial port. 6 Interrupts (Including Reset). 3. What are the types of interrupts in 8051 in embedded Systems ? External interrupt 0 (IE0) has highest priority among interrupts. Timer interrupt 0 (TF0) External interrupt 1 (IE1) Timer interrupt 1 (TF1) has lowest priority among other interrupts. Serial port Interrupt Reset 4. What is an interrupt in embedded Systems ? Hardware or software can communicate to micro controller through interrupts. Interrupts are external signal that...