MICROPROCESSORS IMPORTANT QUESTIONS MCQ 

01․ FPGA means

Field Programmable Gate Array
Forward Programmable Gate Array
Forward Parallel Gate Array
Field Parallel Gate Array

02․ Which language could be used for programming an FPGA.
Verilog
VHDL
Both A and B
None


04․ Which one of the following is not a vectored interrupt?
TRAP.
 INTR.
 RST 7.5.
 RST 3.

05․ 8085 microprocessor has how many pins
 30.
39.
 40.
41.


06․ In 8085 microprocessor, the RST6 instruction transfer programme execution to following location
0030H.
0024H.
0048H.
0060H.

07․ HLT opcode means
 load data to accumulator.
 store result in memory.
 load accumulator with contents of register.
 end of program.


08․ In 8085 name/names of the 16 bit registers is/are
stack pointer.
program counter.
both A and B.
none of these.

09․ What is SIM?
Select interrupt mask.
Sorting interrupt mask.
 Set interrupt mask.
None of these.

10․ The ROM programmed during manufacturing process itself is called
MROM
PROM
EPROM
EEPROM



 11. 8085 microprocessor is an 8-bit microprocessor designed by?

A. IBM
B. Dell
C. Intel
D. VAX


12. In 8085, 16-bit address bus, which can address upto?

A. 16KB
B. 32KB
C. 64KB
D. 128KB


13. There are _______ general purpose registers in 8085 processor

A. 5
B. 6
C. 7
D. 8


14. It is also a 16-bit register works like stack, which is always incremented/decremented by 2 during push & pop operations.

A. Stack pointer
B. Temporary register
C. Flag register
D. Program counter


15. Flag register is an 8-bit register having __________ 1-bit flip-flops.

A. 3
B. 4
C. 5
D. 6


16. What is true about Program counter?

A. It is an 8-bit register, which holds the temporary data of arithmetic and logical operations.
B. When an instruction is fetched from memory then it is stored in the program counter


C. It provides timing and control signal to the microprocessor

D. It is a 16-bit register used to store the memory address location of the next instruction to be executed.


17. This signal indicates that another master is requesting the use of the address and data buses.

A. READY
B. HOLD
C. HLDA
D. INTA


18. This signal is used as the system clock for devices connected with the microprocessor.

A. X1, X2
B. CLK OUT
C. CLK IN
D. IO/M


19. Which of the following is true about Control and status signals?

A. These signals are used to identify the nature of operation.
B. There are 3 control signal and 3 status signals.
C. Three status signals are IO/M, S0 & S1.
D. All of the above

20. MVI K, 20F is an example of?

A. Immediate addressing mode
B. Register addressing mode
C. Direct addressing mode
D. Indirect addressing mode

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