Multivibrators and 555 Timer - General Questions

Directions to Solve

Multivibrators and 555 Timer - General Questions

1.

An alternate function of port pin P3.0 (RXD) in the 8051 is:

A.	serial port input
B.	serial port output
C.	memory write strobe
D.	memory read strobe

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

2.

The following command will rotate the 8 bits of the accumulator one position to the left:
RL A

A.	True
B.	False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

3.

Which of the following instructions will move the contents of the accumulator to register 6?

A.	MOV 6R, A
B.	MOV R6, A
C.	MOV A, 6R
D.	MOV A, R6

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

4.

An alternate function of port pin P3.1 in the 8051 is:

A.	serial port input
B.	serial port output
C.	memory write strobe
D.	memory read strobe

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

5.

A HIGH on which pin resets the 8051 microcontroller?

A.	RESET
B.	RST
C.	PSEN
D.	RSET

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

6.

The ADC0804 has ________ resolution.

A.	4-bit
B.	8-bit
C.	16-bit
D.	32-bit

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

7.

The total amount of external code memory that can be interfaced to the 8051 is:

A.	32K
B.	64K
C.	128K
D.	256K

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

8.

The microcontroller is useful in systems that have nonvariable programs for dedicated applications.

A.	True
B.	False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

1
2
3
..
4
5
6
7
..
9
10
11