Code Converters and Multiplexers - General Questions (4)

Directions to Solve

Code Converters and Multiplexers - General Questions

25.

What control signals may be necessary to operate a 1-line-to-16 line decoder?

A.	flasher circuit control signal
B.	a LOW on all gate enable inputs
C.	input from a hexadecimal counter
D.	a HIGH on all gate enable circuits

Answer: Option B

Explanation:

No answer description available for this question

26.

A principle regarding most IC decoders is that when the correct input is present, the related output will switch:

A.	active-HIGH
B.	to a high impedance
C.	to an open
D.	active-LOW

Answer: Option D

Explanation:

No answer description available for this question.

27.

How many inputs will a decimal-to-BCD encoder have?

A.	4
B.	8
C.	10
D.	16

Answer: Option C

Explanation:

No answer description available for this question

28.

A basic multiplexer principle can be demonstrated through the use of a:

A.	single-pole relay
B.	DPDT switch
C.	rotary switch
D.	linear stepper

Answer: Option C

Explanation:

No answer description available for this question.

29.

What do the mathematical symbols A < b and A > B mean?

A.	A < B means A is greater than B. A > B means A is less than B.
B.	A > B means A is less than B. A < B means A is greater than B.
C.	A < B means A is less than B. A > B means A is greater than B.

Answer: Option C

Explanation:

No answer description available for this question.

30.

The expansion inputs to a comparator are used for expansion to a(n):

A.	4-bit system
B.	8-bit system
C.	BCD system
D.	counter system

Answer: Option B

Explanation:

No answer description available for this question

31.

What is the function of an enable input on a multiplexer chip?

A.	to apply Vcc
B.	to connect ground
C.	to active the entire chip
D.	to active one half of the chip

Answer: Option C

Explanation:

No answer description available for this question

32.

From the following list of input conditions, determine the state of the five output leads on a 74148 octal-to-binary encoder.

I₀ = 1	I₃ = 1	I₆ = 1
I₁ = 1	I₄ = 0	I₇ = 1
I₂ = 1	I₅ = 1	EI = 0

A.	GS = L, A0 = L, A1 = L, A2 = H, EO = H
B.	GS = L, A0 = H, A1 = L, A2 = L, EO = H
C.	GS = L, A0 = L, A1 = H, A2 = L, EO = H
D.	GS = L, A0 = H, A1 = H, A2 = L, EO = H

Answer: Option D

Explanation:

No answer description available for this question.

Code Converters and Multiplexers - General Questions (4)

Code Converters and Multiplexers - General Questions

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