what is computer ?

COMPUTER 

STREAM OR LINE  COMPUTER education 

 In I.T. global or computer education have mainly two lines .

1-  computer hard ware 

2- computer software 

Hardware 

 In front of computer which devise are visible and touchable such as the keyboard , mouse, c. p. u. monitor, printer, are known as  hard ware as a computer .But a hardware devise can not do any thing can operated automatics . It depends upon software . Be hardware are unlimited . 

So that through which stream or course .we can learn or know how to make a new hardware devise of the computer and also able to repair any faultable devises called hardware stream of the computer . 

software 

 The software is a said of commands or program that hardware accept of receive and display the output or result of the with out software  .

we can not operated with out software . This software are developed  by software engineer through programing ( C,  C ++ ,   JAVA , )

We can learn or know how to operate computer program, official job , data entry , on online work and also change our future life style called software stream .  

As per our education our development and today upgrade society at first we should learn or know about  software .

 

There are mainly four type of software 

1- desine 

2- developing

3- system 

4 - application 

What is computer ?

Computer has so many definition depends upon so many authors .

but generally computer is an electrical devise  from use through the input devises such keyboard, mouse , scanner proceed it in the CPU  and give the meaning full information . or result through out put devises , such as monitor printer , speaker .

computer manly four type 

 1- input 2- processing 

3- storage 

4- out put  

 

THE FULLFORM OF THE COMPUTER 

 

 C- COMMANLY 

O-  OPPER ATING  

M- MACINE 

P- PRATICAL

U - USED FOR 

T - TECHANICAL 

E - EDUCATION 

R - RESEARCH  

Safe Ways To Speed Your Computer Windows Registry – Safe Ways To Speed Your Computer

 When Windows first started out, programs stored pretty much everything they needed in the same folder as the program. The files were simple text files, called “ini” files. They contained all sorts of information, from the last files you opened to color choices and much more. The big advantage of this was that when you changed computers you could usually get away with copying a program’s folder across to the new machine and the program would still run. And if you ran into problems with a program, you could almost always solve them by checking the contents of their file.Then came the Windows Register .It was supposed to make life simpler. One central repository to store everything vital about your computer. Everything you ever need to know about your machine is stored there – software, hardware, applications, settings, hardware drivers, helper files, where that window was when you last opened it and whether it should open there repeat .This means that the Registry is good in theory .In practice, it’s not always as easy. Much the same as mending your car used to be simple, now it takes more computing power than it did to land on the moon .Entries get stored there but not removed when they are no longer needed .Because it’s near enough incomprehensible to real people, nasty programs can hide details in the Register . Programs like viruses, adware and spyware. Not to mention keystroke loggers and other nasties  .When the registry gets too full with stuff it doesn’t need, your computer starts to slow down with all the extra 

workload. Booting up takes longer. Launching simple programs gives you enough time to brew a fresh coffee. Closing down your PC is just as bad. The most radical way to sort this out is to completely re-install everything on your computer from scratch. But assuming you live in the real world or have nothing better to do for the next couple days, this likely isn’t a viable option .Next up, if you’re brave, is by using the Regedit software that comes with Windows. Unless you’re manually removing something that you installed when you wrote a program, this really isn’t recommended. Type in or delete the wrong thing and your computer could become more unstable. Sure, try it on a machine belonging to an enemy (when they’re not looking, of course) or a computer you no longer use. But messing with the registry by hand on your regular computer is not something to be undertaken lightly, if at all .Far and away the best way of cleaning up your registry and speeding up your computer is to use software specifically designed for the purpose. There are plenty of programs around and your choice is likely to be dictated by the one you come across first – near enough all modern registry cleaner programs work efficiently and will get your computer back up to its full speed quickly and without any of the worries associated with tackling registry entries manually.

what is moment of inertia ?

MOMENT OF INERTIA 

 Translation motion 

Force  causes acceleration but mass or inertia opens it.

ROTATIONAL MOTION

Torque causes rotational accleration but M.I opposes it the role of M.I in rotational motion is same as that of mass in linner motion .

 

momentum inertia is an important property in rigid body motion. It plays the same role in rotational motion as thast of mass in linner motion .

L =IW

 

P= MV 

It is also called the rotational in inertria or it is the inability of a body to change it is state of rest or uniform rotational motion on less an external is applied .

Righd body

It is a solid body in which particles are fixed in their position and separation distance between paticles does not change due to motion .

Mathematicaly Expression for M.I 

consider a body roting about an axis. Let m1,m2,m3 ............. mn be mass of particles at perpendicular distance r1,r2, r3 .......... rn  from the axis of rotation .

Let V1,V2, ...... Vn   be the linner velocityes of paricles.  W is common angular  velcity of vall partiles as well as that of body then 

V1= r1w,  V2= r2w ...... Vn = rnw 

 

Kinetic energy of body  Ek  = sum of  kinetic energy  of all particles,

 

1/2 M1V1+ 1/2 M2V2+ ..........  + 1/2 Mn vn

= 1/2 M1R1 R1W1 + 1/2 M2R2R2 W2 +....+1/2 Mn Rn w2 

=1/2 (M1 R1R1 +....... + MnRn Rn ) w2

E k =  1/2 IWW

Where I= M1 R1*R1+M2r2*r2 ............... + Mnrn*rn = M.I of mass particles with squre of perpendicular distance form their axis of roation 

If the body constants single  particles then M.I 

I=mrr

The inventation Atomic clock

 Atomic clock

Louis Essen was borned  in 1908 in a small town in England called Nottingham. His childhood was typical of the time and he pursued his education with enjoyment and dedication. At the age of 20 Louis graduated from the University of Nottingham, where he had been studying. It was at this time that his career started to take off, as he was invited to join the NPL, or National Physics Laboratory. It was during Louis’s time at the NPL that he began working to develop a quartz crystal oscillator as he believed they were capable of measuring time as accurately as a pendulum based clock. Ten years after joining the NPL Louis had invented the Essen ring. This was an eponymous invention which took its name from the shape of the quartz which Louis had used in his latest clock and which was three times more accurate than the previous versions. Louis soon moved on to newer areas of research and began to study ways to measure the speed of light. During World War II he began to work on high frequency radar and used his technical ability to develop the cavity resonance wavemeter. From 1946 it was this wavemeter which he used, along with a colleague by the name of Albert Gordon-Smith, to make his lightspeed measurements. It has been acknowledged recently that Louis’s measurements were by far the most accurate to have been recorded up until that time. During the early part of the 1950’s Louis began to take an interest in research which was being carried out at the National Bureau of Standards (NBS) in the United States of America. He learnt that work was being carried out to invent a clock which was more accurate than any other. The American scientists were using the idea of maintaining a clock’s accuracy by using the radiation emitted or absorbed by atoms. At that time the Americans were using a molecule of ammonia but Louis felt that this was not working as well as if they were using different atoms, such as hydrogen or caesium, and so he began working on his own clock using these materials instead. 1953 saw Louis and a colleague, Jack Parry, receiving permission to develop an atomic clock at the NPL based on Louis’s existing knowledge of quartz crystal oscillators and other relevant techniques he had learned from the cavity resonance wavemeter he had previously designed. Only two years later Louis’s first atomic clock was running, Caesium I, designed by the UK scientists. Development in the United States had all but stopped due to political difficulties. Louis continued to work on his atomic clock and by 1964 he had managed to increase the accuracy of the atomic clock from one second in 300 years to one second every 2000 years! The continued success of Louis’s work resulted in the definition of a second being changed from 1/864000 of a mean solar day to being calculated as the time it took for 9192631770 cycles of the radiation in an atomic clock. Louis Essen died in 1997 and before his death had been honoured with, amongst others, an OBE and the Tompion Gold Medal of the Clockmakers’ Company.

What is voice over internet protocol?

Voice Over Internet ProtocolActually, there are three unique kinds of VOIP administrations. The most generally utilized assistance for business reasons for existing is the VOIP administration handled by utilizing an "Simple Telephone Adapter" which… The "Voice Over Internet Protocol" phone framework is one of the methods of media transmission by means of web. The shortened type of "Voice Over Internet Protocol" is VOIP. It is a type of cutting edge PC innovation that has influenced the phone frameworks. Voice Over Internet ProtocolActually, there are three unique sorts of VOIP administrations. The most ordinarily utilized assistance for business objects is the VOIP administration prepared by utilizing an "Simple Telephone Adapter" which is otherwise called ATA. It is the least difficult sort of VOIP administration as ATA licenses the utilization of a standard telephone and it doesn't need an explicitly planned IP telephones that are for the most part utilized in different kinds of VOIP administrations. ATA works by changing the simple signs into a bunch of computerized parcels. These parcels are sent to the broadband web association and are distributed to the able and suitable phone trade for the call to get finished. How The Use Of VOIP Phones Is Advantageous In BusinessThe VOIP telephone utility has been acquiring prevalence colossally, particularly, in the field of organizations. The VOIP specialist co-ops license the usage of standard phones which empowers to settle on telephone decisions through a phone associated with a landline phone framework. The VOIP framework is reasonable as the settling on of decisions by utilizing this framework doesn't need any setting of telephone lines and surprisingly the charges of calls are exceptionally modest. This element of modest call rates is especially valuable for the financial specialists who are dealing with their organizations at global levels. It is the most effective strategy for phone system.Difference Between VOIP Telephone System And Regular Telephone SystemThere are many individuals the people who are bit confounded between a VOIP phone framework and a normal phone framework. Presumably, the motivation behind both the phone frameworks is to settle on telephone decisions however the principle contrast lies in the way the two of them work. In a standard telephone framework, the simple sound signs are sent through fiber optics as phone lines to the customary phone organizations and get changed over into the voices. However, if there should arise an occurrence of VOIP phone framework, the simple signs get changed over into computerized parcels and are then sent to the broadband web association, which are then conveyed to phone trade for the fruition of a call. Instructions to Select Perfect VOIP systemThere are various VOIP specialist organizations in the cutthroat market yet you ought to pick the best among them. The accompanying tips can truly help you in tracking down the best assistance provider.1 – Before wanting to pick a VOIP specialist co-op, you ought to consistently study the market completely by going through the audits and tributes of the current or old clients. This will help in getting a near situation before you and will help in taking a choice. 2 – You ought to consistently pick the VOIP administration that offers every one of the types of assistance needed by you. For instance, a technique to redesign VOIP network with no extra hardware, modest nearby and worldwide call rates, and so forth 3 – Enquire from the specialist organizations about the provisions that they proffer if the telephones and the simple connectors must be gone on business outings that is whether they give remote telephones or handsets in such a case or not. The Voice Over Internet Protocol phone framework has ended up being an incredible mode

What you need to know about Bluetooth speaker 🔊?

     

Bluetooth earphones and frill are one of the quickest developing patterns in electronic innovation today. Those little contraptions that fit cozily to the ear are quick turning into the hot piece of electronic hardware to claim assuming you need to contend. This without hands freedom to speak with different earphones, PDAs, workstations, and presently, iPod innovation makes it one of the quickest developing purchaser buys. Bluetooth earphones arrive in an assortment of model and value ranges. For a moderate $40 dollars, you can buy essential Bluetooth earphones with a reserve season of as long as 120 hours. This model can likewise get calls while not appended to your ear, and has voice dial and ordinary dialing options.For somewhat more, customers can attempt the BlueTake GT400 G3 Bluetooth earphones. This one consolidates a smooth style in a pleasant shade of blue that offers an appealing option in contrast to different headsets. This one additionally offers a full line of embellishments. Enthusiasts of Bluetooth earphones may likewise need to look at the VR-3 remote phone speakerphone intended for a Bluetooth earphones set. For under $50, this convenient device can be utilized in your vehicle. Another, bigger speakerphone is additionally accessible for under $75.Moderately estimated somewhere in the range of $50 and $100 dollars, shoppers may likewise select to buy Scosche remote Bluetooth earphones, still under $100. These Bluetooth earphones are somewhat more classy than different models and accompany a docking base framework that can plug into your cigarette lighter. At the point when you dock the Bluetooth earphones into the docking framework, they promptly go to speakerphone mode. Continuing on up the Bluetooth earphones models and value runs, any aficionado of Bluetooth earphones might need to investigate the I-Phono Plus Bluetooth earphones and Transmitter unit. This model empowers remote music listening abilities. For under $200, clients can handle play records and pay attention to one or the other music or approaching calls with the simple flick of a switch. The pack contains the Bluetooth earphones and a Bluetooth transmitter that will work with any sound system or sound hardware. One more decision for Bluetooth earphones, and one that actually goes underneath the $200 mark, is the Scosche Bluetooth earphones. These clever contraptions have a flip down amplifier and accompany a full scope of alternatives and frill as well.Besides being the most blazing selling thing on numerous customer electronic top picks postings, Bluetooth earphones and embellishments will keep on riding the ubiquity wave. Fresher models flaunting extra alternatives and abilities keep on hitting the market at regular intervals. As costs descend, an ever increasing number of individuals will actually want to bear and appreciate such advantageous innovation. Be encouraged notwithstanding, that bugs are as yet being worked out on a few Bluetooth models, so try to do your exploration before you purchase. Look at discussions and criticism on different sites offering Bluetooth innovation to study specific models of Bluetooth earphones to ensure you buy the one that best suits your needs and needs.

coulomb's law of electrostatic

 The examination of electromagnetic marvels that happen when there are no moving charges—i.e., after a static congruity has been set up. Charges show up at their equilibrium positions rapidly, considering the way that the electric force is exceptionally astounding. The mathematical strategies for electrostatics make it possible to calculate the allocations of the electric field and of the electric potential from a known arrangement of charges, transmitters, and covers. On the other hand, given a lot of transports with known potential outcomes, it is practical to find out electric fields in regions between the transmitters and to choose the charge appointment outwardly of the courses. The electric energy of a lot of charges extremely still can be seen from the viewpoint of 

Force (f)=k q1×q2÷r×r ×r Cape

In the example, the chargein the electric field produced by the charge Q2. This field has the valueEquation.in newtons per coulomb (N/C). (An electric field can also be expressed in volts per metre [V/m], which is the equivalent of newtons per coulomb.) The electric force on Q1 is given byEquation.in newtons. This equation can be used to define the electric field of a point charge. The electric field E produced by charge Q2 is a vector. The magnitude of the field varies inversely as the square of the distance from Q2; its direction is away from Q2 when Q2 is a positive charge and toward Q2 when Q2 is a negative charge. Using equations (2) and (4), Electricity and Magnetism. Electricity. Electrostatics. Static electricity. [Calculating the value of an electric field - equation 4]

Electrostatic

Electro static the investigation of electromagnetic wonders that happen when there are no moving charges—i.e., after a static harmony has been set up. Charges arrive at their balance positions quickly, in light of the fact that the electric power is very amazing. The numerical techniques for electrostatics make it conceivable to figure the appropriations of the electric field and of the electric potential from a known setup of charges, transmitters, and covers. Then again, given a bunch of conveyors with known possibilities, it is feasible to ascertain electric fields in districts between the transmitters and to decide the charge appropriation on the outside of the conduits. The electric energy of a bunch of charges very still can be seen from the outlook of the work needed to gather the charges; then again, the energy additionally can be considered to live in the electric field delivered by this get together of charges. At last, energy can be put away in a capacitor; the energy needed to charge such a gadget is put away in it as electrostatic energy of the electric field.