Explore topic-wise MCQs in Engineering.

The given circuit represents a(n) ________.

The simplified form of .

The carry output of each adder in a ripple adder provides an additional sum output bit.

A good rule of thumb for determining the pin numbers of dual-in-line package IC chips would be to place the notch to your right and pin #1 will always be in the lower right corner.

Shift registers are used to store and transfer data.

The modulus of a counter is the actual number of states in its sequence.

The concept of a counter to implement a digital one-shot using HDL is not used.

All flip-flops in an asynchronous counter change states at the same time.

A glitch is a short pulse resulting in an undesired result in a digital circuit.

The counter circuit and associated waveforms shown below are for a(n) ________ counter, and the correct output waveform for Q_B is shown by waveform ________.

Asynchronous counters are often called ________ counters.

The given circuit is a(n) ________.

Three cascaded modulus-10 counters have an overall modulus of 1000.

A reliable method for eliminating decoder spikes is to use strobing.

An asynchronous counter differs from a synchronous counter in the method of clocking.

The terminal count of a typical modulus-10 binary counter is 1010.

One characteristic of a ring counter is that the modulus is equal to the number of flip-flops in the register and, consequently, there are never any unused or invalid states.

In a full-featured counter in HDL, the concept of rolling over simply means the count sequence has reached its limit and must start over at the beginning of the sequence.

The 7447 has a 4-bit BCD input, seven individual active-LOW outputs, and a ripple blanking input and output.

Dependency notation is no longer used.

Asynchronous counters are known as modulus counters.

To cascade is to connect in parallel.

Cascade means to connect the Q output of one flip-flop to the clock input of the next.

In a synchronous counter, each state is clocked by the same pulse.

Basic counters can be cascaded in parallel to increase the number of data bits that the counter can handle.

In a 74192 BCD decade up-/down-counter, the terminal count up and the terminal count down are active-LOW.

All decade counters are BCD counters.

Shift register counters use logic functions to reset the registers when the desired count is reached.

Generally speaking, the synchronous counter requires more circuitry than an asynchronous counter.

A parallel in/serial out shift register enters all data bits simultaneously and transfers them out one bit at a time.

Another term used to describe up/down counters is bidirectional.

When implementing a complete system application using IC counter chips, output devices such as LED indicators must be configured to operate from the counter outputs.

Bidirectional shift registers can shift data either right or left.

A state diagram is a table of states.

A ripple counter is an asynchronous counter.

In a multiplexer, the data select control inputs are responsible for determining which data input is selected to be transmitted to the data output line.

Before you can make a design you must decide if you want an active-HIGH output.

The microcontroller needs to use only three input lines to monitor eight separate points.

A BCD is used for communication between a computer and a human being because it is too easy to deal with arithmetically.

A demultiplexer takes a dual input data value and routes it to one of several outputs.

Digital systems have ________.

Digital systems are called ________.

1/4 as a binary number would be ________.

The voltage levels used to represent binary values (0 and 1) in a digital system are nearly equal in value.

In a serial data system, the data is transmitted along a group of conductors simultaneously.

Temperature variation is normally an analog quantity.

The MOD number of a Johnson counter will always be equal to one-half the number of flip-flops in the counter.

The invalid range for an input to TTL logic is from ________.

The column weight of the "1" in the hexadecimal number 1AB is ________.

The 2's complement of the binary number 1000 is ________.