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WorksheetsRIVISION-1
Total questions: 22
Worksheet time: 11mins
Which operations are performed by the bit manipulating instructions IN C.
MOV A,B
P1^1&P2^2
P1=0X00
How many rows and columns are present in a 16*2 alphanumeric LCD
rows=2, columns=32
rows=16, columns=2
rows=2, columns=16
rows=32, columns=2
How many data lines are there in a 16*2 alphanumeric LCD?
8
16
3
2
Which pin of the LCD is used for adjusting its contrast?
1
2
4
3
For writing commands on an LCD, RS bit is
set
reset
set & reset
none of the mentioned
Which of the following step/s is/are correct for sending data to an LCD?
set the R/W bit
set the E bit
set the RS bit
all of the mentioned
The RS pin is _________ for an LCD.
input
output
input & output
none of the mentioned
Which of the following steps detects the key in a 4*4 keyboard matrix about the key that is being pressed?
masking of bits
ensuring that initially, all keys are open
checking that whether the key is actually pressed or not
all of the mentioned
To detect that in which column, the key is placed?
we can mask the bits and then check it
we can rotate the bits and then check that particular bit which
is set or reset(according to the particular condition)
none of the mentioned
all of the mentioned
In reading the columns of a matrix, if no key is pressed we should get all in binary notation
0
1
f
7
Key press detection and Key identification are:
the same processes
two different works are done in Keyboard Interfacing
none of the mentioned
any of the mentioned
Why do we need a ULN2803 in driving a relay?
for switching a motor
for increasing the current
for increasing the power
for switching the voltage
How can the direction of the DC motor be changed?
by changing the torque
by changing the switching speed
by changing the polarity of voltages connected to the leads
by changing the RPM rating
View Answer
Which of the following is not one of the SFR addresses of the ports of 8051?
80
90
A0
DO
KEYPAD IS THE COMBINATION OF
SWITCH
TTL
CAPACITOR
WHICH IS NOT DATA TYPE
SIGNED INT
UNSIGNED INT
SCON
SFR
C PROGRAM IN 8051 COMPARE TO ASSEMBLY
COMPLICATED
EASY
WHICH IS NOT LOGICAL OPERATOR
&
!
,
<<
WHICH ONE IS CORRECT
SFR P1
SBIT P1
THERE ARE-------TYPES OF SSD
1
2
3
4
SSD USE FOR DISPLAY
NUMERIC VALUE
HEXADECIMAL VALUE
BOTH
NONE
3FH CODE USE IN CC SSD TO DISPLAY
0
2
1
3
