What do you mean by discrete logic gates?
A chip that contains one logic gate or a small number of logic gates. Although thousands of gates are routinely placed on a single chip, discrete logic chips with only one or two gates are also manufactured. These chips are used as “glue chips” between ASICs and other ICs typically to reshape and transfer signals.
What are the 3 types of logic gates?
All digital systems can be constructed by only three basic logic gates. These basic gates are called the AND gate, the OR gate, and the NOT gate. Some textbooks also include the NAND gate, the NOR gate and the EOR gate as the members of the family of basic logic gates.
What is a logic gate statement?
Logic gate circuits can be expressed as a circuit diagram, or as a written logic statement. e.g. Z = ((NOT A) AND (A OR B)) OR (A OR B) Each exam board will have their own preference on how to express these written statements, but the principles remain the same.
What are the six logic gates?
There are seven basic logic gates: AND, OR, XOR, NOT, NAND, NOR, and XNOR. The AND gate is so named because, if 0 is called “false” and 1 is called “true,” the gate acts in the same way as the logical “and” operator.
What is logic gate in Physics 12?
In logic families the logic 0 is used to represent ‘true’ and the logic 1 is used to represent ‘false’. Complete answer: There are three types of gates: universal gates, primary gates and secondary gates. The universal gates include NOR gate and NAND gate.
Can or gate have 3 inputs?
Like the AND gate, the OR function can have any number of individual inputs. However, commercial available OR gates are available in 2, 3, or 4 inputs types. Additional inputs will require gates to be cascaded together for example.
Why XOR gate is called an inverter?
Why XOR gate is called an inverter? Explanation: EX-OR gate gives 1 if both inputs are different means 0 or 1 and gives 0 if both are same and EX-NOR is opposite of EX-OR gate, so it provides a HIGH output for both inputs HIGH or both inputs are LOW.
Why logic gates are called logic gates?
Logic gates are devices that implement Boolean functions, i.e. it does a logic operation on one or more bits of input and gives a bit as an output. They are the basic building blocks of any digital system. Hence logic gates are named as AND gate, OR gate, NOT gate, etc.
Which is the best description of a logic gate?
Logic gate. For discrete circuitry, see Discrete circuit. In electronics, a logic gate is an idealized or physical device implementing a Boolean function; that is, it performs a logical operation on one or more binary inputs and produces a single binary output. Depending on the context, the term may refer to an ideal logic gate,…
How many gates are on a discrete logic chip?
A chip that contains one logic gate or a small number of logic gates. Although thousands of gates are routinely placed on a single chip, discrete logic chips with only one or two gates are also manufactured. These chips are used as “glue chips” between ASICs and other ICs typically to reshape and transfer signals.
When did I start using discrete component logic?
I often use discrete component implementations of logic gates in my projects, often consisting of AND and OR gates made from diodes and resistors. I “invented” or “discovered” how to make these gates when I was about 14 and have been happily using them ever since.
How is the impedance of a logic gate determined?
It is determined by the resistor used, and by the current handling ability of the signals driving the gate inputs. If the discrete logic gate output is driving a high impedance IC input such as are found on the modern 74HC-series IC’s, there is no problem.