Microprocessors and Microcontrollers (3160914) MCQs

MCQs of 8051 Microcontroller Architecture

Showing 31 to 40 out of 89 Questions
1 2 3 4 5 6
31.

8051 is an ....................bit microprocessor

(a)

4
(b)

8
(c)

16
(d)

32
Answer:

Option (b)

32.

8051 has ................no. of pins

(a)

32
(b)

40
(c)

64
(d)

128
Answer:

Option (b)

33.

There are .................no of ports in 8051

(a)

2
(b)

4
(c)

6
(d)

8
Answer:

Option (b)

34.

How many address lines are present in 8051

(a)

8
(b)

32
(c)

16
(d)

64
Answer:

Option (c)

35.

How many datalines does 8051 have

(a)

4
(b)

8
(c)

32
(d)

16
Answer:

Option (b)

36.

Higher order address lines of 8051 are present in each port

(a)

port 0
(b)

port 1
(c)

port 2
(d)

port 3
Answer:

Option (c)

37.

Datalines in 8051 are present in which port

(a)

port 0
(b)

port1
(c)

port2
(d)

port3
Answer:

Option (a)

38.

dual address and datalines in 8051 are present in which port

(a)

port 1
(b)

port 2
(c)

port 3
(d)

port 0
Answer:

Option (d)

39.

pin no .......................is gnd pin in 8051

(a)

5
(b)

10
(c)

15
(d)

20
Answer:

Option (d)

40.

Vcc is pin no ............... in 8051

(a)

15
(b)

20
(c)

25
(d)

40
Answer:

Option (d)

Showing 31 to 40 out of 89 Questions
1 2 3 4 5 6