A NOR gate is a digital logic gate that implements logical NOR operation. It is a combination of an OR gate and NOT gate. If we connect the output of OR gate to the input of a NOT gate, the gate so obtained is known as NOR gate. This gate is also called as Negated OR gate. … Read more
A NAND gate is a combination of an AND gate and NOT gate. If we connect the output of AND gate to the input of a NOT gate, the gate so obtained is known as NAND gate. This gate is also called as Negated AND gate. In Boolean expression, the NAND gate is expressed asand is being … Read more
OR gate is a device which has two or more inputs and one output. The output of an OR gate is logical 1 (high) only if one or more inputs are logical 1 (high). In Boolean algebra, the term OR is represented by plus (+) and the Boolean expression Y = A+B indicates Y equals … Read more
AND gate is a device which has two or more inputs and one output. The output of an AND gate is logical 1 only if all the inputs are logical 1. In Boolean algebra, the term AND is represented by dot (.) and the Boolean expression Y = A.B indicates Y equals A AND B. … Read more
The NOT gate is a device that has only one input and one output. It is a logic gate that inverts the input digital signal. That is why NOT gate is also known as Inverter. In Boolean algebra, the term NOT is represented by bar symbol (‾) and the Boolean expression indicates that Y equals … Read more
Photoelectric cell is the device which converts light energy into electrical energy. Depending upon the different photoelectric effects employed, the photoelectric cells are of following 3 types. Photoemissive cell Photoconductive cell Photovoltaic cell Photoemissive cell This cell is based on the fact that electrons are emitted from a photo-sensitive surface by the action of light. … Read more
Decoder is a combinational circuit that has ‘n‘ input lines and maximum of 2n output lines. One of these outputs will be active High based on the combination of inputs present, when the decoder is enabled. It means that Decoder detect a particular code. The output of the decoder are nothing but the min terms … Read more
Radioactivity Definition The phenomenon of spontaneous emission of radiations by heavy elements is called radioactivity. The elements which show this phenomenon is called radioactive elements. Radioactivity was discovered accidentally by Antoine Henri Becquerel in 1896. α-particle: It is called as alpha particle. It is a helium nucleus having two protons and two neutrons ( ). β-particle: It … Read more
Electric charge is a fundamental property of matter due to which electrical and other related effects are produced in the matter. The transfer of electrons from one object to another is responsible for the electric charging of the objects. Or Electric charge is the physical property of matter that causes it to experience a force … Read more
Electrical energy sources are majorly classified into two classes i.e. Independent sources and Dependent sources. The independent sources are further divided into two types namely voltage source and the current source. There are four types of the dependent sources. They are as follows 1. Voltage Controlled Voltage Source (VCVS) 2. Voltage Controlled Current Source (VCCS) 3. … Read more