19EET501 - MICROPROCESSORS AND MICROCONTROLLERS

Which one of the following addressing technique is not used in 8085 microprocessor?

• 1. Register

• 1. Immediate

• 1. Register indirect

• 1. Relative

Following is a 16-bit register for 8085 microprocessor

• 1. Stack pointer

• 1. Accumulator

• 1. Register B

• 1. Register C

The number of output pins of a 8085 microprocessor are

• 19

• 27

• 40

• 21

Which of the following flag is not present in the 8085 microprocessor?

• Sign Flag

• Trap Flag

• Auxiliary Carry Flag

• Parity Flag

The port that is used for the generation of handshake lines in mode 1 or mode 2 is

• port A

• port B

• port C lower

• port C upper

The device that is used to obtain an accurate position control of rotating shafts in terms of steps is

• DC motor
  

• AC motor

• Stepper motor

• Servo motor

In control word register, if SC1=0 and SC0=1, then the counter selected is

• counter 0

• counter 1

• counter 2

• none

The register that stores all the interrupt requests in it in order to serve them one by one on a priority basis is

• Interrupt Request Register

• In-Service Register

• Priority resolver

• Interrupt Mask Register

Where does the comparison level occur for 16-bit contents in the compare mode operation?

• Between CCPR1 register & TMR1

• Between CCPR1 & CCPR2 registers

• Between CCPR2 register & TMR1

• Between CCPR2 register & TMR0

The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following ?

• clock cycle

• memory cycle

• machine cycle

• instruction cycle