Microprocessors and Microcontrollers (3160914) MCQs

MCQs of Applications and design of microcontroller based systems

Showing 1 to 10 out of 40 Questions
1 2 3 4
1.

How many rows and columns are present in a 16*2 alphanumeric LCD?

(a)

rows=2, columns=32
(b)

rows=16, columns=2
(c)

rows=16, columns=16
(d)

rows=2, columns=16
Answer:

Option (d)

2.

How many data lines are there in a 16*2 alphanumeric LCD?

(a)

16
(b)

8
(c)

1
(d)

0
Answer:

Option (b)

3.

Which pin of the LCD is used for adjusting its contrast?

(a)

Pin no 1 
(b)

Pin no 2 
(c)

Pin no 3 
(d)

Pin no 4
Answer:

Option (c)

4.

For writing commands on an LCD, RS bit is

(a)

Set
(b)

Reset
(c)

Set and Reset
(d)

None of the above
Answer:

Option (b)

5.

Which command of an LCD is used to shift the entire display to the right?

(a)

0x1C
(b)

0x18
(c)

0x05
(d)

0x07
Answer:

Option (a)

6.

Which command is used to select the 2 lines and 5*7 matrix of an LCD?

(a)

0x01
(b)

0x06
(c)

0x0e
(d)

0x38
Answer:

Option (d)

7.

Which of the following step/s is/are correct for sending data to an LCD?

(a)

set the R/W bit
(b)

set the E bit
(c)

set the RS bit
(d)

all of the mentioned
Answer:

Option (d)

8.

Which of the following step/s is/are correct to perform reading operation from an LCD?

(a)

low to high pulse at E pin
(b)

R/W pin is set high
(c)

low to high pulse at E pin & R/W pin is set high
(d)

none of the mentioned
Answer:

Option (c)

9.

Which instruction is used to select the first row first column of an LCD?

(a)

0x08
(b)

0x0c
(c)

0x80
(d)

0xc0
Answer:

Option (c)

10.

The RS pin is _________ for an LCD.

(a)

input
(b)

output
(c)

input & output
(d)

none of the mentioned
Answer:

Option (a)

Showing 1 to 10 out of 40 Questions
1 2 3 4