NEW
Font size
Worksheets19EET501 - MICROPROCESSORS AND MICROCONTROLLERS
Total questions: 15
Worksheet time: 15mins
Which one of the following addressing technique is not used in 8085 microprocessor?
Register
Immediate
Register indirect
Relative
Following is a 16-bit register for 8085 microprocessor
Stack pointer
Accumulator
Register B
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
In 8085 the instruction MOV A, M is an example of ?
Direct addressing
Immediate addressing
Register addressing
Register indirect addressing
MVI A, 32h instruction is an example of ________ instruction.
one byte
two byte
three byte
four byte
XCHG instruction exchange content between _____ and ______.
BC and DE pair
HL and DE pair
Top of stack and register
BC and HL
Rotate right is equivalent to ______
Multiplication by 2
Division by 2
Addition by 2
Substraction by 2
Which instruction is used to specify end of program?
EI
DI
HLT
RST
