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Why ECL family is fastest?
ECL or emitter coupled logic is faster than TTL type logic because the switching transistors do NOT go into saturation in either the on or off state. The switching time from saturation in a high output to saturation in a low state like TTL requires that the junction capacitance be overcome and that the charge in the saturated junction get swept out. ECL is sensitive to a threshold level only.
What is the function of the NOT logic gate?
The NOT gate is also called an "inverter", as its output is always the complement of the input. That is, if the input is TRUE then the output is FALSE else the output is TRUE end if). Its implementation electronically is not much different than that of an analog inverting amplifier, except that the gate is deliberately designed to operate nonlinear and change rapidly from one state to another.
What is logic 0 and logic 1?
Logic 0 and logic 1 are the two states in digital (or binary) logic. A binary numbering system has but two numbers: 0 and 1. In contrast, we use a decimal system with 10 numbers: 0 to 9. The area of algebra that addresses binary (2-state) logic is called Boolean. In Boolean a logic 0 may be refered to as 'low', 'off' or 'false'; a logic 1 as 'high', 'on' or 'true'. Boolean logic is the foundation of digital electronics.
What state in the US is also known as the diamond state?
Idaho is known as the "Gem State"
Can nand be inhibitted or disabled?
I suppose so. If a three input NAND is used as a two input device, the third input can be viewed as an inhibit input. Also some NAND devices can be "3 stated" where the output goes to a high impedance.
How do you convert Mealy machine to Moore machine?
In mealy machine,as soon as the input bit is one..the output will become logic high.It need not go into another state. Now let us see for Moore machine... It is in the state which recognised the bit equence of 10 and state output is low. now,If the incoming input bit is one it will go to another state upon the clock tick where we will take output which depends on the present state. so we say that the new state is the one which detected the sequence of 101 and it's output is logic high. so mealy is asynchronous where as moore is synchronous.
Why ECL family is fastest?
ECL or emitter coupled logic is faster than TTL type logic because the switching transistors do NOT go into saturation in either the on or off state. The switching time from saturation in a high output to saturation in a low state like TTL requires that the junction capacitance be overcome and that the charge in the saturated junction get swept out. ECL is sensitive to a threshold level only.
What is Tri-state logic?
Electronic logic uses just two states, high and low voltage, or "1" and "0". The output of a gate will always be at one value or the other. This is convenient when only a single output is used to drive a signal. In some cases, it is useful to have two or more outputs driving the same signal line. However, if two outputs are linked together, if they have different outputs, there is likely to be damage to the outputs and the level on the line will be un-predictable. A tri-state output has the same high and low levels as standard logic outputs but it has a third state, namely high impedance. A high impedance state means that the output is not transferred to the line so effectively, the output is simply turned off. Another logic gate can now drive the line and the level is entirely predictable. Numerous outputs can now drive a single line as long as only on is turned on at any time.
What is Tri state logic?
Electronic logic uses just two states, high and low voltage, or "1" and "0". The output of a gate will always be at one value or the other. This is convenient when only a single output is used to drive a signal. In some cases, it is useful to have two or more outputs driving the same signal line. However, if two outputs are linked together, if they have different outputs, there is likely to be damage to the outputs and the level on the line will be un-predictable. A tri-state output has the same high and low levels as standard logic outputs but it has a third state, namely high impedance. A high impedance state means that the output is not transferred to the line so effectively, the output is simply turned off. Another logic gate can now drive the line and the level is entirely predictable. Numerous outputs can now drive a single line as long as only on is turned on at any time.
What is Solid State Logic's population?
Solid State Logic's population is 160.
When was Solid State Logic created?
Solid State Logic was created in 1969.
What is the function of the NOT logic gate?
The NOT gate is also called an "inverter", as its output is always the complement of the input. That is, if the input is TRUE then the output is FALSE else the output is TRUE end if). Its implementation electronically is not much different than that of an analog inverting amplifier, except that the gate is deliberately designed to operate nonlinear and change rapidly from one state to another.
Difference between mealy and Moore sequencial circuits?
in the Moore finite state machine model output depends only on the present state. but in the mealy model the output depends on the both present state and the input. this is the main difference
What is meant by standard load in digital electronics?
One standard load is the load of a typical input of a specified logic family. This is more relevant with bipolar logic families (e.g. RTL, DTL, TTL, ECL, I2L) than MOS logic families (e.g. NMOS, CMOS). Outputs of devices in these logic families are then rated by the number of standard loads they can drive. However when crossing between logic families (e.g. LS TTL to S TTL) the concept of standard loads is less useful and actual high/low state input current loading and output drive capability calculations should usually be made.
How can you tell if the input or output of a logic device is HIGH or LOW?
A: using a multimeter or scope it can be verifies the states of a logic device either as '1' or a '0' which translates to true = hi [volts] = '1' and '0' as low [volts] = '0'. '0' is a false state and '1' is a true state. Must add that the voltmeter will not decipher hi or low if toggling
What is the Tri State of a Signal?
Tri-State: typically the 3rd state of a digital signal, floating (neither driven to a logic 1 or a logic 0).
What should be done with unused TTL output?
Unused TTL inputs should never be left open. Depending on how their logic levels will affect the operation you want from the device, unused inputs should always be tied to either the +5v supply (logic 1) or to the circuit ground (logic 0). If an input is left open ("floating"), then it can assume either logic level, and you literally never know which state it's in.
