Q1. The highest priority in 8085 microprocessor system is
(A) TRAP
(B) INTR
(C) RST 7.5
(D) RST 6.5

Q2. Ouput of a assembler is reffer as what ?
(A) source program
(B) object program
(C) macro instruction
(D) none of these

Q3. A microprocessor is ALU and
(A) control unit on a single chip
(B) and memory on a single chip
(C) register unit and i/o device on a single chip
(D) register unit and control unit on a single chip

Q4. Number of output pins in 8085 microprocessor is ?
(A) 16
(B) 24
(C) 32
(D) 40

Q5. Which of the following is a math co-processor?
(A) 8085
(B) 8086
(C) 8087
(D) 8088

Q6. If interrupt arrives on the three lines INTR, RTS 6.5 and RTS 7.5, which of them will the 8085 processor acknowledge?
(A) INTR
(B) RTS 6.5
(C) RTS 7.5
(D) RTS 5.5

Q7. If the 8085 adds 87H and 79 H, which of the following flags will become 1
(A) Zero flag and Auxiliary Carry flag
(B) Zero flag and Carry flag
(C) Carry flag and Auxiliary Carry flag
(D) None of these

Q8. Out of the following which is not the flag in 8085 microprocessor
(A) Counter flag
(B) Carry flag
(C) Zero flag
(D) Parity flag

Q9. Which group of instructions do not affect the flags?
(A) Arithmetic operations
(B) Logic operations
(C) Data transfer operations
(D) Branch operations

Q10. which of the following is used to mask the bits
(A) AND
(B) OR
(C) XOR
(D) NOT

Q11. which of the following is a data transfer instruction
(A) CMA
(B) IN
(C) NOP
(D) HLT

Q12. which of the following is not a two byte instruction
(A) LXI
(B) MVI
(C) ANI
(D) ORI

Q13. which of the following is not an 8085 flag
(A) sign
(B) zero
(C) parity
(D) overflow

Q14. which of the following up has 16 bit data bus
(A) z8000
(B) 68000
(C) 8086
(D) all the above

Q15. the 8085 micro processor is available in
(A) 14 pin-dip
(B) 24 pin- dip
(C) 28 pin-dip
(D) 40 pin-dip

Q16. the number of flags in 8085 micro processor is
(A) 2
(B) 3
(C) 5
(D) 6

Q17. Program counter in 8085 Microprocessor is
(A) 8 bit Wide
(B) 16 bit wide
(C) 32 bit Wide
(D) None of the above

Q18. The fastest translator that converts high level language is
(A) none of these
(B) both of these
(C) machine
(D) compiler

Q19. A set of instruction that tell computer what to do is known as
(A) machine
(B) assembly
(C) hardware
(D) software

Q20. Ready signal in 8085 is useful when the CPU communicate with
(A) a slow peripheral device
(B) a fast peripheral device
(C) a DMA controller chip
(D) a PPI chip

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