FREE Bachelor of Electrical Engineering Digital Circuits Questions and Answers
What is required in order to cause a change in the flip flop in addition to synchronous control inputs?
To cause a change in the flip flop, a clock and synchronous control inputs are required. These flip-flops can be level- or edge-triggered. Only when the clock flips from 0 to 1 or vice versa should a change take place.
What statement about digital circuits is accurate?
Any circuit with a signal that must fit into one of two distinct levels is said to be digital. Each level is represented by one of two states (for instance, on/off, 0/1, true/false). Digital circuits create logic gates using transistors to perform Boolean logic.
Which IC feature in digital circuits corresponds to the switching time of a certain transistor?
The propagation delay is a function of the MOSFET or transistor's switching time. The propagation delay aids in estimating the logic circuits' speed.
Which of the following alternatives belongs to the digital electronics non-saturated logic family?
Bipolar integrated circuits (ICs) can be divided into saturated and non-saturated logic families. The non-saturated logic family is stated to include Schottky TTL and ECL (Emitter-coupled Logic).
When in digital electronics can one logic gate drive numerous other logic gates?
One logic gate can drive numerous additional logic gates if its input impedance is high and its output impedance is low. The driving of several logic gates will be difficult due to high output impedance.
Which of the following factors mostly affects how many emitters a TTL digital circuit has?
Transistors with many emitters are used in the input of the TTL circuit. Thus, the fan-in controls the amount of emitters. The maximum number of inputs that a given gate can handle is determined by fan-in.
What exactly is a circuit?
A closed circuit in which electrons can move is called a circuit. A power source, such a battery, supplies electrical energy to the circuit.
When does a flip-flop in digital electronics change state after being triggered by a negative level?
Between the clock input and the input of the AND gate, a NOT gate is present in a flip-flop that is activated by negative levels. The flip-state flop's changes as a result when the clock is negative.
Which of the subsequent digital logic circuits can add more than one bit at a time? Which of the subsequent digital logic circuits can add more than one bit at a time?
A ripple-carry adder is a parallel binary adder that allows for the simultaneous addition of multiple bits of data. In contrast to series circuits, where inputs are delivered one at a time, a parallel circuit's inputs can be sent and processed all at once.
What kind of circuit is a digital logic circuit?
In digital electronics, there are primarily two types of digital logic circuits. They are: a) Sequential logic circuits b) Combinational logic circuits
What exactly is digital electronics?
A subfield of electronics called "digital electronics" is focused with the study of digital signals and the creation of digital signal-using or -generating systems. Boolean logic and discrete signal electronics are terms used to describe electronics, gadgets, and equipment.
Which of the following alternatives best describes an S-R flip flop's synchronous control inputs?
Synchronous control inputs are those for which the flip flop alters its state in response to the clock. Both S and R are synchronous control inputs for the S-R flip flop.
What does a switching function with several outputs in digital electronics go by?
A switching function with multiple outputs is called a multi-output function. The digital logic circuit corresponding to the multi-output function will be in a multiple output gate network.
Which gates in digital circuits are necessary to transform a NOR-based SR latch into an SR flip-flop?
To make an S-R flip-flop, two 2 input AND gates are combined with a NOR-based S-R latch. R and clock are provided to one AND gate's inputs. Similar to the first AND gate, the second one has clock and S as inputs. To make an S-R flip-flop, two 2 input AND gates are combined with a NOR-based S-R latch. R and clock are provided to one AND gate's inputs. Similar to the first AND gate, the second one has clock and S as inputs.
Which of the following is a digital electronic example?
Digital electronics include things like computers, information appliances, digital cameras, digital televisions, flash memory, key USB memory, mobile phones, hard drives, and computer memory devices. Digital signal processing is used on analog signals once they have been converted to digital form.
If the clock is low and D = 0, what will the output of a D flip-flop be?
The input provided to D will not have any impact when the clock is low. This is due to the NAND gates' set and reset pins being held high. NAND gates will produce a zero output result when HIGH is applied.