Draw neat architecture of 8085 microprocessor.
[3 marks]Define the terms: address bus, data bus and control bus .
[4 marks]Draw and explain the internal block diagram of 8051.
[7 marks]Give the comparison of microprocessor and microcontroller.
[3 marks]Classify memory. Explain EPROM & EEPROM.
[4 marks]Define bits of SCON, TCON & PCON registers.
[7 marks]Explain SFR (Special Function Register) and PSW (Program Status Word).
[7 marks]Define the term Subroutines in accordance with 8051 microcontroller.
[3 marks]Explain I/Oread-write machine cycle of 8051 microcontroller.
[4 marks]Why delay are required during programming and how they are generated ?
[7 marks]Draw only timing diagram for memory write cycle.
[3 marks]Discuss tri-state logic with necessary examples.
[4 marks]What is interrupt? Explain external interrupt with related SFRs.
[7 marks]Define the term Machine cycle.
[3 marks]Classify addressing modes of 8051 microcontroller & Explain any one in details.
[4 marks]It is required to generate a square wave with a frequency of 50 Hz at P2.2 pin of 8051. Assume that the crystal frequency is 12MHz.
[7 marks]Give comparison between vectored and non-vectored interrupts.
[3 marks]Write a brief note on DAC.
[4 marks]It is required to generate a square wave with a frequency of 1 KHz at P0.0 pin of 8051. With necessary details explain various SFR settings required and write ISR to fulfill this. Assume that the crystal frequency is 12MHz.
[7 marks]What is key de-bounce issue and what are the solutions to avoid that?
[3 marks]Explain: LJMP, XCHD, CJNE, NOP
[4 marks]Explain keyboard interfacing with 8051 and draw flow chart to detect and identify key activation.
[7 marks]Explain the Interfacing of LED with 8051.
[3 marks]Write short note on assembler directives.
[4 marks]Explain role of Accumulator, Stack Pointer & Program Counter in any microprocessor/ Controller.
[7 marks]