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Microprocessors
Pin Details of 8085 and Interfacing with 8085
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Instruction Set and Programming with 8085
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1
GATE ECE 2016 Set 3
MCQ (Single Correct Answer)
+1
-0.3
In an 8085 microprocessor, the contents of the accumulator and the carry flag are A7 (in hex) and 0, respectively. If the instruction RLC is executed, then the contents of the accumulator (in hex) and the carry flag, respectively, will be
A
4E and 0
B
4E and 1
C
4F and 0
D
4F and 1
2
GATE ECE 2015 Set 2
MCQ (Single Correct Answer)
+1
-0.3
In an 8085 microprocessor, which one of the following instructions changes the content of the accumulator?
A
MOV B, M
B
PCHL
C
RNZ
D
SBI BEH
3
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following 8085 microprocessor programs correctly calculates the product of two 8-bit numbers stored in registers B and C?
A

MVI A, 00H
JNZ LOOP
CMP C
LOOP DCR B
HLT
B

MVI A, 00H
CMP C
LOOP DCR B
JNZ LOOP
HLT
C

MVI A, 00H
LOOP ADD C
DCR B
JNZ LOOP
HLT
D

MVI A, 00H
ADD C
JNZ LOOP
LOOP DCR B
HLT
4
GATE ECE 2015 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In an 8085 microprocessor, the shift registers which store the result of an addition and the overflew bit are, respectively.
A
B & F
B
A & F
C
H & F
D
A & C
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Questions Asked from Marks 1
GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 3 (1) GATE ECE 2015 Set 2 (1) GATE ECE 2015 Set 3 (1) GATE ECE 2015 Set 1 (1) GATE ECE 2013 (1) GATE ECE 1998 (1) GATE ECE 1997 (1) GATE ECE 1996 (2) GATE ECE 1995 (1) GATE ECE 1993 (1) GATE ECE 1992 (1) GATE ECE 1989 (1) GATE ECE 1988 (1)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics