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:
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:
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:
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:
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: