Integrated circuits are categorised according to the number of logic gates or the complexity of the circuits within a single chip with the general classification for the number of individual gates given as: Classification of Integrated Circuits For example, a simple AND gate my contain only a few individual transistors, were as a more complex microprocessor may contain many thousands of individual transistor gates. Integrated Circuits or IC’s as they are more commonly called, can be grouped together into families according to the number of transistors or “gates” that they contain. AND, NOT and OR gates can be combined to get exclusive-OR gates.Generally speaking, TTL logic IC’s use NPN and PNP type Bipolar Junction Transistors while CMOS logic IC’s use complementary MOSFET or JFET type Field Effect Transistors for both their input and output circuitry.Īs well as TTL and CMOS technology, simple digital logic gates can also be made by connecting together diodes, transistors and resistors to produce RTL, Resistor-Transistor logic gates, DTL, Diode-Transistor logic gates or ECL, Emitter-Coupled logic gates but these are less common now compared to the popular CMOS family. XOR circuits can be constructed usingĪns wer. Both OAI (OR-AND- Invert) and AOI (AND-OR-Invert) are the forms of complex logic gates.Ģ0. Which are the forms of complex logic gates?Īns wer. Integrated Injection circuit.Ĭharles Sanders Pierce is also called the father of pragmatism, who first made use of truth tables.ġ8. These are a combination of OR gates and thus will in totality function to first invert the input and then give the high value output.Īns wer. What will be the output of the given logic gate? Truth table represents for a given logic gate, what output will a particular input give.ġ5. It is a table representing what input and output will be given by a given boolean operator.It is a table representing what output will one get for a given input.A NAND gate has -– inputs and - outputs.Ī NAND gate is a combination of NOT and AND gates, so it will convert two low inputs to high inputs first and then give an AND based output for the modified inputs. Not gate can function on a single input, and invert that input.ġ3. Which of the following gates can function on a single input?Īns wer. What is the boolean operation performed by an OR gate?Īn OR gate performs addition function, so that if any of the two inputs is 1, it will give the output also as 1.ġ2. NOT gate reverses the input,so if input is true (1), output will be false (0) therefore, a is the correct option.ġ1. Which of the following signifies a NOT gate? There are seven types of logic families, namely, RTL, DTL, IIL, TTL, ECL, MOS, CMOS.ġ0. Transistor-transistor logic is the correct full form of TTL.ĩ. So for the given number, swapping 0’s and 1’s would give the number designated as option b as the answer.Īns wer. The one’s complement means that one has to swap all the 0’s and 1’s. What is the one’s complement for the binary number 011001 George Boole, son of a shoemaker class family, born in Lincoln, England, was the inventor of the idea and concept of logic gates.ħ. Who was the inventor of the idea of logic gates?Īns wer. Differential cascade voltage switch is the expanded form of DCDVS logic.Ħ. X-OR and X-NOR are termed as arithmetic gates because these gates are so connected that they carry out an arithmetic action and the output they give are the digits of the result.Īns wer. Which of the following are the arithmetic logic gates? using these gates and making different combinations out of them, various other gates like NAND, NOR, etc are created but there is no such gate by the name of IF.Ĥ. Which of the following is not a logic gate?ĭifferent types of basic logic gates that are there include AND, OR, NOT. Logic gates work on the concept of getting two input electric current flows, comparing them and sending on another electrical output, depending on what it finds.ģ. By using energy from a chemical reactionĪns wer.This is so because using multiples of nand gates, any logical gate (AND, OR, NOT, NAND,NOR) can be created. Multiple Choice Questions Which gate is known as the universal gate? There are different types of logic gates and based on the type of logical gate, the output varies due to variation in the logical operation. There are two binary conditions, true or false where true represents 1 and false represents 0. Logic gates operate on the concept of Boolean function with having two inputs and one output. Logic gates are devices that act as the building blocks for digital circuits, and perform basic logical functions by taking decisions through a combination of digital signals coming from the inputs.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |