Uses of Logic Gates

A digital circuit’s building blocks are logic gates, which perform a variety of basic logic gates that are necessary by any digital circuit. These can accept multiple outputs and yet only output one.

The output of a logic gate is determined by the combination of input put across it. To carry out logical processes, logic gates make use of Boolean algebra. Nearly every digital device we use on a daily basis contains logic gates. In the architecture of our  laptops, phones, memory devices and  tablets, logic gates are used.

Uses of logic gates

Logic gates are used for a variety of gadgets that we use on a daily basis. Depending on the application and truth table, various sorts of gates are utilized. Flip flops, which are certainly built using gates, are used to store memory in mobile phones, laptops, and other electronic devices. They’re also found in microprocessors’ Arithmetic Logic Units (ALUs), which include adders, multipliers, and other functions. Logic gates are used to create these circuits.

 Logic Level

Simply put, a logic level is a voltage or state that a signal can exist in. The two states of a digital circuit are frequently referred to as ON and OFF. In binary, another ONE corresponds to a binary 1 and an OFF corresponds to a binary 0. These signals are referred to either Low or High in Arduino. Several distinct technologies have evolved in electronics during the last 30 years to describe the different voltage levels.

Which is better: logic 0 or logic 1?

Binary logic is used in digital electronics to store, analyze, and transfer data or information. In binary logic, there are just two states: ON and OFF. This is typically referred to as a binary 1 or 0. The binary 1 is also known as a HIGH signal, whereas a binary 0 is known as a LOW signal.

The voltage level of a signal is commonly used to define its strength. What is the difference between such a logic 0 (LOW) and a logic 1 (HIGH)? Chip manufacturers usually define one of those in their specification papers. TTL (Transistor-Transistor Logic) is the most widely used standard.

Convert the inputs based on their states

Working of a Logic Level Converter Circuit

The circuit operates in three states once those two prerequisites are met. The states are discussed in the following sections.

Whenever the low end is in either a logic 1 or a logic 2 state (3.3V).

Whenever the low end is logic 0 or in the low state (0V).

When the status of the High side goes from 1 to 0 or from high and low (5V to 0V)

Whenever the low side is high, which indicates the MOSFET’s source voltage is 3.3V, this MOSFET somehow doesn’t conduct since the Vgs threshold point is not reached. At this time, the MOSFET’s gate voltage is 3.3V, and the MOSFET is voltage output is also 3.3V. As a result, Vgs equals 0V.

The MOSFET is switched off. The pullup resistor R2 reflects logic 1 or the high state of the short side input on the bottom of the pipe of the MOSFET as a 5V output.

If the low end of the MOSFET switches from low to high in this condition, the MOSFET begins to conduct. Because the supply is in logic 0, the high side has also become zero.

The two requirements mentioned above successfully transform a low voltage logic function to a high electrical logic state.

Another functional state occurs when the MOSFET’s high side switches from high and low. The drain substrates diode begins to conduct at this point.

Logic Gates Input Voltages

Logic gate circuits can only input and output two types of signals: “high” (1) and “low” (0), which are expressed by a different voltage: total power supply voltage for “high” and zero voltage for “low.” In a perfect scenario, all digital logic signaling would reside within these extreme voltage boundaries, never deviating from them (i.e., a little under full voltage for a “high,” and more than zero voltage for a “low”).

TTL Gate Input Voltage Tolerance

The nominal power supply for TTL gates is 5v, +/- 0.25 v.. A TTL “high” signal should be exactly 5.00 volts, and a TTL “low” signal should be exactly 0.00 volts.Real TTL gate circuits, on the other hand, are unable to produce such precise voltage levels and are instead intended to receive “high” and “low” signals that deviate significantly from all these desired values. The “accepted” input signal levels for a “low” logic state are 0 volts to 0.8 volts, and 2 volts to 5 volts for an “elevated” logic state.

CONCLUSION

A logic gate is a computer model or an actual electronic gadget that implements a Boolean function, which is a logical operation with one or even more binary sequence that results in a single binary output. The word might refer to that of an ideal logic gate, such as one with zero rise time and unbounded fan-out, or it could reference to a non-perfect physical deviceDiodes or  

transistors operate as electronic switches in logic gates, but they can also be built with vacuum tubes, electromechanical relays (relay logic), fluid logic, pneumatic logic, optical, molecular, or even mechanical elements.