Electronics - Combinational Logic Circuits

Exercise :: Combinational Logic Circuits - Filling the Blanks

1. 

A technique that can be used in multiple-digit numerical displays to control suppression or display of leading or trailing zeros in the display is called _________.

A. advanced zero control
B. time division multiplexing
C. parity generation
D. ripple blanking

Answer: Option D

Explanation:

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2. 

Parity systems are defined as either_____ or _____ and will add an extra _____ to the digital information being transmitted.

A. positive, negative, byte
B. odd, even, bit
C. upper, lower, digit
D. on, off, decimal

Answer: Option B

Explanation:

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3. 

A device that uses a binary decoder to direct a digital signal from a single source to one of several destinations is a ________.

A. multiplexer
B. demultiplexer
C. encoder
D. comparator

Answer: Option B

Explanation:

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4. 

A code in which each individual digit of a decimal number is represented by a 4-bit binary number is _________.

A. binary coded decimal
B. binary
C. hexadecimal
D. seven-segment code

Answer: Option A

Explanation:

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5. 

The diodes in a seven-segment display where all cathodes are tied together and grounded are illuminated when a logic ____________________ is applied to the ____________________.

A. LOW, anodes
B. LOW, count down control line
C. HIGH, anode
D. HIGH, count up control line

Answer: Option C

Explanation:

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