What would you like to do?
If you would like to perform an action by energising to act ( Logic 1 = desired output) then it's positive logic. If you would like to perform an action by de-energising to act ( Logic 0 = desired output) then it's negative logic. Here is an example for the positive and negative logic POSITIVE LOGIC NEGATIVE LOGIC o/p Y = 1 (energise to act) o/p Y = 0 (de-energise to act) A B Y A B Y 1 1 1 1 1 0 1 0 0 1 0 1 0 1 0 0 1 1 0 0 0 0 0 1 any how the required action can be performed by using either a positive logic or a negative logic.
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In negative feedback systems, the response reverses a change in a controlled condition, and in positive feedback systems, the response strengthens the change in a controlled c…ondition.
logical physical ---------- ----------- 1.it is an abstract 1.it is in detail. 2.it include the process chat. 2.it includes the organisationl chat. 3.it involves soft cop…y. 3.it involves the hard copy. 4.it represents the module. 4.it represents the electronics system.
In terms of physiology an example of a negative feedback mechanism would be the stretch receptors in muscle which send signals back to nerves causing the movement to stop the …signals. A positive feedback mechanism example would be the beginning of the action potential. The initial influx of sodium ions depolarize the cell which cause even more sodium channels to open. To generalize positive feedback mechanisms are less common and never unlimited.
Theorems, corollaries, and postulates.
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.
Reasoning and logic are highly misunderstood concepts. Often, they are considered as synonyms. The only similarity between reasoning and logic is that they both are types …of thinking. Otherwise they are just the opposite. Reasoning can be defined as the mechanism, which converts an involuntary thought into a voluntary thought. Logic can be defined as the mechanism, which converts a voluntary thought into involuntary thought. Reasoning: 1. Reasoning deals with differences only. It ignores similarities. 2. It assumes that every cause has an effect and that every effect has just one cause. 3. Reasoning is voluntary and transient. Any thing eternal should be considered as logical. 4. Since reasoning deals with differences only and also enables us to be conscious of our entire knowledge it creates an impression that our knowledge has improved enormously. 5. It makes all activities of life independent of each other. Thus in reasonable life it is possible to correct just one activity without affecting any other. 6. Since it deals with differences only it enables us to solve just one problem at a time. 7. Reasoning is ideally suited for the material world. It is less suitable for body and least suited for mind. This, is because body and mind act as single units. Dividing the body is difficult and dividing the mind is impossible. Logic: 1. Logic deals with similarities. It ignores differences 2. Logic assumes that similar causes lead to similar effects. 3. Logic is involuntary and eternal. 4. Since logic considers similarities and also makes our knowledge involuntary it condenses knowledge, creating an illusion that our knowledge is reducing. 5. It merges all activities into a single giant activity called life. Thus in a logical life it is not possible to correct just one activity without affecting any other. 6. Since it deals with similarities logic enables us to rectify our entire life simultaneously. 7. Logic is ideally suited for body and mind because body and mind work as single entities. Logic ultimately leads us to the seven basic kinds of thinking and then to the mind selector, that selects one of the seven kinds of thinking. However, at this stage logic is totally involuntary and only a master of Original Meditation can be able to be aware of these. Reasoning and logic are two of the seven basic kinds of thinking. Natural thinking, the default thinking of human beings is a blend of reasoning and logic. ANS2: Reasoning is the general term for the process of arriving at an answer to a choice. Many specific processes can lead you to accepting a choice and logic is among those processes. Of the processes, logic and mathematics can produce universally accepted truth. Faith and trust in an authority can produce truth among those who share the same faith or who accept the same authority. The scientific method can also lead to a reasoned choice, however, science, by itself, will not produce truth since the senses are fallible and empiricism is the basis of science.
First of all, logic level needs to be defined. Lets start with zero. Zero is considered the ground state in most logic systems. Zero has value. In TTL based logic systems, a z…ero is a voltage beteen 0.0 and 0.8, and most drivers spec out to provide at most 0.4. That is zero. We call it logic low. Now lets define logic high. In TTL, high is anything higher that 2.0 volts, and it is typical to see 2.4 volts. That "no man's land" between 0.8 and 2.0 is off limits, and reserved for transistion voltages only. You might ask, why not +5 and ground? See CMOS for that one. This is a discussion of TTL. At some point in time, you decide what is true and what is false in your circuit. Most engineers would say high is true in low is false. That is fine As long as they are consistent, they are OK. Even if thay change between sections of a circuit, they are find, so long as they pay attention. So much for the long winded spin up. Here is the answer... If you have a gate that take two inputs and generates a high output when and only when both inputs are high, you have a positive logic AND gate. Your AND gate takes two inputs, and if they are both true, the output is true. Wonderful. Take that same gate and pretend the inputs are negative logic and what do you get, but an OR gate. The gate generates a low output when and only when either input is low. You have a negative logic OR gate. Your OR gate takes two inputs, and if one or both of them is true, the output is true. Wonderful. Beauty is in the eye of the beholder, eh? Why would you choose one over the other? It turns out that you might have an extra NAND gate or two and you want a NOR gate. Well, with a bit of careful design, one becomes the other. Another, specific case... In the Intel 8085 microprocessor, the ALE (Address Latch Enable) pin is positive logic; high true, low false. ALE initiates a sequence of operations known as a bus transaction where an address is emitted and then data is read or written. Along the way, two other pins RD- (Read inverted) and WR- (Write inverted) actually conduct the read or write transaction. RD- and WR- are negative logic, they are true when low and false when high.
I would say logic is a prerequisite for science. In other words science is specific application of logic, not something completely separate. Logic presents the next stage in t…he scientific process or thinking. So every logical thing can only be logical if its approved by a scientific method; (theory, hypothesis, e.t.c). One leads to another.
The Logical Data Model (LDM) is derived from the Conceptual Data Model (CDM). The CDM consists of the major entity sets and the relationship sets, and does not s…tate anything about the attributes of the entity sets. The LDM consists of the Entity Sets, their attributes, the Relationship sets, the cardinality, type of replationship, etc. The Physical Data Model (PDM) consists of the Entity Sets (Tables), their attributes (columns of tables), the Relationship sets (whose attributes are also mapped to columns of tables), along with the Datatype of the columns, the various integrity constraints, etc. Erwin calls the conversion / transformation of LDM => PDM as Forward Engineering which further leads to the actual code generation and the conversion of Code => PDM => LDM as Reverse Engineering! Though the question says specifically about Erwin, the above explanation is independent of the datamodeling tool used for the purpose.
Philosophy is the study of ideas like knowledge, truth, realities and the meaning of life. Philosophy helps individuals to gain understanding. Logic is a way of thinking a…nd reasoning about something to fully understand it. Logic is a way of analyzing facts or situations.
Fuzzification comprises the process of transforming crisp values into grades of membership for linguistic terms of fuzzy sets. The membership function is used to associate a g…rade to each linguistic term. Fuzzification is the process of changing a real scalar value into a fuzzy value. This is achieved with the different types of fuzzifiers. There are generally three types of fuzzifiers, which are used for the fuzzification process; they aresingleton fuzzifier,Gaussian fuzzifier, andtrapezoidal or triangular fuzzifier.
could be negative or positive "negative logic" just means, that the level used by "positive logic" within that logic family for False, is instead used for "True" and… vice versa.
Na not really a cpu but close to it how a Bus works or another name for it is North Bridge or if u have another 1 which will be called the South Bridge it is a configing and V…ERY POWERFUL chipset lets say u want to run something like a game .... it will go from HDD to RAM to Processor to North Bridge to South Bridge to Graphics card to get the viewing and detailing by time it got to the Graphics chip or card North and South Bridge made it easyer to run in the Graphics peace so when u have a bridge it makes ur computer hardware able to do !!ALOT!! more then it was not able to do without so it Bridge will speed ur computer up tecnickly but it comes with mother boards its not removeable or reinstallable its completely unremovable unless u want to distroy ur mother board... but some mother boards have 1 North Bridge some have 2 or none hopes this helps ya
Feedback is a signal loop such that the output signal of one loop becomes the input of the next. A positive feedback system regenerates the input whereas a negative feedback s…ystem degenerates the input. For this reason they are often referred to as regenerative feedback and degenerative feedback, respectively. The human body uses both systems in order to regulate the release of chemicals and hormones for various purposes. A typical example of both regenerative and degenerative feedback is the process of blood clotting. The feedback loop is initiated when injured tissue releases chemicals that activate platelets in the blood, which activate more platelets, causing a rapid cascade and the formation of a blood clot. Degenerative feedback determines when to stop releasing clotting chemicals, after which other chemicals can begin to break down the clot as the injury heals. Another example are the contractions felt during childbirth, which stimulates the hypothalamus to produce oxytocin. When the baby is born, negative feedback degenerates the production of oxytocin.
A System of Logic was created in 1843.