Digital Electronics
Sequential Circuits
Marks 1Marks 2Marks 5
Microprocessor
Marks 1Marks 2Marks 3
Boolean Algebra
Marks 1Marks 2
Analog to Digital and Digital to Analog Converter
Marks 1Marks 2
Combinational Circuits
Marks 1Marks 2Marks 5
Minimization
Marks 2
Logic Families and Memories
Marks 1Marks 2
Logic Gates
Marks 1Marks 2
1
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The associated figure shows the two types of rotate right instruction $${R_1},\,{R_2}$$ available in a microprocessor where Register is a $$8$$-bit register and $$C$$ is the carry bit. The rotate left instructions $$L1$$ and $$L2$$ are similar except that $$C$$ now links the most significant bit of Register instead of the least significant one. GATE EE 2007 Digital Electronics - Microprocessor Question 10 English

Such a division can be correctly performed by the following set of operations

A
$$L2,R2,R1$$
B
$$L2, R1, R2$$
C
$$R2, L1, R1$$
D
$$R1, L2, R2$$
2
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A software delay subroutine is written as given below: GATE EE 2006 Digital Electronics - Microprocessor Question 14 English

How many times $$DCR$$ $$L$$ instruction will be executed?

A
$$255$$
B
$$510$$
C
$$65025$$
D
$$65279$$
3
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
The $$8085$$ assembly language instruction that stores the content of $$H$$ and $$L$$ registers into the memory locations $$2050H$$ and $$2051H,$$ respectively, is
A
$$SPHL$$ $$2050H$$
B
$$SPHL$$ $$2051H$$
C
$$SHLD\,\,2050H$$
D
$$STAX\,\,2050H$$
4
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
The following program is written for an $$8085$$ microprocessor to add two bytes located at memory addresses $$1FFE$$ and $$1FFF$$
$$\eqalign{ & LXI\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,H,\,\,\,1FFE \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B,\,\,\,M \cr & INR\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,L \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,A,\,\,\,M \cr & ADD\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \cr & INR\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,L \cr & MOV\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,M,\,\,\,A \cr & XRA\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,A \cr} $$

On completion of the execution of the program, the result of additional is found.

A
in the register $$A$$
B
at the memory address $$1000$$
C
at the memory address $$1F00$$
D
at the memory address $$2000$$
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement