1
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
If $$A = \left[ {\matrix{ 2 & { - 0.1} \cr 0 & 3 \cr } } \right]$$ and $${A^{ - 1}} = \left[ {\matrix{ {{\raise0.5ex\hbox{$\scriptstyle 1$} \kern-0.1em/\kern-0.15em \lower0.25ex\hbox{$\scriptstyle 2$}}} & a \cr 0 & b \cr } } \right]$$ then $$a+b=$$
A
$${7 \over {20}}$$
B
$${3 \over {20}}$$
C
$${19 \over {60}}$$
D
$${11 \over {20}}$$
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6

Consider an 8085 microprocessor system


If in addition following code exists from 0109H onwards ORI 40H, ADD M What will be the result in the accumulator after the last instruction is executed
A
40H
B
20H
C
60H
D
42H
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6

Consider an 8085 microprocessor system


The following program starts at locaton 0100H.
LXI SP, 00FF
LXI H, 0107
MVI A, 20H
SUB M

The contents of accumulator wnen the program counter reaches 0109H is

A
20H
B
02H
C
00H
D
FFH.
4
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
What memory address range is NOT represented by chip 1 and chip 2 in figure? A0 to A15 in this figure are the address lines and CS means Chip Select. GATE ECE 2005 Microprocessors - Pin Details of 8085 and Interfacing with 8085 Question 13 English
A
0100H - 02FFH
B
1500H - 16FFH
C
F900H - FAFFH
D
F800H – F9FFH