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Digital-electronics Questions Set 152:

Quiz Mode

In a toggle mode, which of the following conditions is followed by a JK flip-flop?

J=1, K=0

J=0, K=1

J=0, K=0

J=1, K=1

Solution:

A multiplexer is a logic circuit that allows digital information from a single source to be routed onto several lines.

True

False

not given

null

Solution:

What is a unique way of representing Boolean expressions in canonical form?

Boolean Expression

Sum of Products (SOP)

Minterms

Product of Sums (POS)

Solution:

In a digital multiplier circuit, two 8-bit numbers are given as inputs. What is the maximum number of bits in the output of the multiplier?

Solution:

How is a signed negative binary number recognized?

By the Least Significant Bit (LSB)

By the Most Significant Bit (MSB)

By the byte

By both the LSB and MSB

Solution:

In a CMOS circuit, the time taken for the transition of the output from 90% to 10% of the maximum value is called the:

Rise time

Fall time

Propagation delay

Decay time

Solution:

The way to speed up diode-transistor logic (DTL) is to add a capacitor across the intermediate resistor.

Small "speed-up" capacitor

Large "speed-up" capacitor

Small "speed-up" transistor

Large "speed-up" transistor

Solution:

What is the basic element that differs combinational logic circuits from sequential logic circuits?

Adder

Substractor

latches

memory

Solution:

Three decade counter would have ____________

2 BCD counters

3 BCD counters

4 BCD counters

5 BCD counters

Solution:

One of the major drawbacks to the use of asynchronous counters is that ____________

Low-frequency applications are limited because of internal propagation delays

High-frequency applications are limited because of internal propagation delays

Asynchronous counters do not have major drawbacks and are suitable for use in high- and low-frequency counting applications

Asynchronous counters do not have propagation delays, which limits their use in high-frequency applications

Digital-electronics Questions Set 152:

In a toggle mode, which of the following conditions is followed by a JK flip-flop?

Solution:

A multiplexer is a logic circuit that allows digital information from a single source to be routed onto several lines.

Solution:

What is a unique way of representing Boolean expressions in canonical form?

Solution:

In a digital multiplier circuit, two 8-bit numbers are given as inputs. What is the maximum number of bits in the output of the multiplier?

Solution:

How is a signed negative binary number recognized?

Solution:

In a CMOS circuit, the time taken for the transition of the output from 90% to 10% of the maximum value is called the:

Solution:

The way to speed up diode-transistor logic (DTL) is to add a capacitor across the intermediate resistor.

Solution:

What is the basic element that differs combinational logic circuits from sequential logic circuits?

Solution:

Three decade counter would have ____________

Solution:

One of the major drawbacks to the use of asynchronous counters is that ____________

Solution:

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