Introduction to Microcontrollers 1. In 8086 microprocessor , the address bus is ________ bit wide  10 bit  20 bit  16 bit  12 bit   Answer 20 bit 2. What is the file extension is used to load in a microcontroller to execute an instruction?  .doc  .c  .txt  .hex Answer .hex 3. What are the two instruction set architecture (ISA) classifications?  SIDC & BIDC  CISC & RISC  CISC & VISC Answer CISC & RISC 4. What is internal RAM memory of 8051 microprocessor?  32 bytes  64 bytes  128 bytes  256 bytes Answer 128 bytes 5. How many timers/counter 8051 16-bit microprocessor have?  1  2  5  8 Answer 2 timers/counter 6. Register that is used to holds the memory address of the next instruction to be executed is  Program Memory  Program Counter  Control Unit  Instruction decoder Answer Program Counter 7. The 8051 microprocessor has ________ parallel I/O ports.  2  3  4  5 Answer  4 parallel I/O ports. 8. Which instructions affect the program counter?  Call & Return  Call &

  Embedded System Design Introduction to Microcontrollers & Embedded processors   Introduction to Microcontrollers 1. In 8086 microprocessor , the address bus is ________ bit wide  10 bit  20 bit  16 bit  12 bit   Answer 20 bit 2. What is the file extension is used to load in a microcontroller to execute an instruction?  .doc  .c  .txt  .hex Answer .hex 3. What are the two instruction set architecture (ISA) classifications?  SIDC & BIDC  CISC & RISC  CISC & VISC Answer CISC & RISC 4. What is internal RAM memory of 8051 microprocessor?  32 bytes  64 bytes  128 bytes  256 bytes Answer 128 bytes 5. How many timers/counter 8051 16-bit microprocessor have?  1  2  5  8 Answer 2 timers/counter 6. Register that is used to holds the memory address of the next instruction to be executed is  Program Memory  Program Counter  Control Unit  Instruction decoder Answer Program Counter 7. The 8051 microprocessor has ________ parallel I/O ports.  2  3  4  5 Answer  4 parallel I/O por