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.
It is opposite to analytic logic.
logic..is a entillictual,,thinkking,,and reasoning...
A Soft-Logic-Controller is a PC being used as a Programmable Logic Controller, or PLC.
A positive logic system will output true only when the input is true. A negative logic system will output true only when the input is false. The NOT logic gate is an example of a negative logic system. That is, NOT( false ) will output true.
the gold one did it
The most common application of tri-state logic is in the use of LED circuits. They can also be used on a shared electric bus.
The "tristate area" of New York consists of New York, New Jersey and Connecticut.
AND, OR, XOR, BUFFERNAND, NOR, XNOR, NOT/INVERTERAny of these except the BUFFER and NOT/INVERTER can have 2 or more inputs.Any of these can have Schmitt Trigger inputs to reduce noise sensitivity.Any of these can have a tristate output driver that can be switched off by a control input.This results in a potentially unlimited number of variant logic gates.
An output that can be placed in any of three (tri-) states: high, low, and disconnected. The disconnected state is provided so that these outputs can be used to drive common shared buses with all tristate outputs kept in the disconnected state except one, that one will drive the buss then in the next buss cycle that could disconnect and a different one would connect. This permits sharing without collisions.
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Tri-state
A tristate device is a device that has three states instead of two. The normal states are low and high, where the output is pulled down or up by turning on one of the two output transistors. The third state is floating, where neither transistor is turned on. Tristate devices are useful in a bus design where, for instance, more than one device can drive a data bus, but only one at a time.
Tristate devices are used in bus based systems to allow multiple bus drivers to control the bus, each at different times, while all the rest are allowed to read the bus. Only one device can drive the bus at any one time. All the others "tristate" or float, so they neither drive the bus low nor high.
well, it can be 30 billion killometers long. but i am not that sure. i am soo sorry,
Tristate Trojans representing Vermont, new Hampshire, and Maine
a digital signal that can disconnect from the line it is driving to let something else drive it
fourth