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Computers
This category includes questions and answers about computers and everything related to computers.
48,002 Questions
What are three components of an effective refusal?
An essential component of an effective refusal is declining the offer. Without declining the offer, the other party won't know that you refused the offer.
Where can one purchase VTech Genius notebooks?
One can purchase a VTech Nitro Notebook in a relatively cheap and discounted price at specialized computer stores, such as PC world, or online and sites such as Amazon.
What are programs that run on your computer and disrupt operations?
Malware, a category of software which includes viruses and spyware, is one culprit. Another may be software which does not have malicious intent, but disrupts normal operations becauses of bugs/glitches.
What is the shortcut key for save?
The shortcut may differ from one program to another, so it is advisable to check the developer's help page or FAQ for the list of shortcuts for the program you are using.
The most-common "Save as" shortcuts are as follows:
- To save press Ctrl+S. If the document has never been saved before, this will bring up the 'Save As' dialog box. If the document has been saved before, this will overwrite the existing save.
- 'Save as' for Microsoft Word it is the F12 key.
- On Paint.NET the shortcut is Ctrl+Shift+S.
How long do you have to go to school to become an computer analyst?
There are many software engineers who have no college degree or degrees from fields that are completely unrelated to software. I know. I was one of them. You need to convince the hiring manager and the technical interviewers that you can do the work that's required. They can be convinced based on experience and referrals, or a mix of college and experience. College can be helpful, or not helpful at all, depending on the quality of the program. More important is how independent and self-motivated to learn you are, since no college undergrad can relay. There's also many software engineering related positions that have little to do with programming, so it's possible to do horizontal transfers between some related positions once you get hired and get a few years of experience behind you. There are QA Testers, User-interface designers, technical writers, project management, technical support and IT positions that all can serve as a path into software engineering.
A bachelor's (four-year) degree in computer science may help one to get a job as a software engineer. With regard to schooling, please avoid those private overly priced For-profit schools such as kaplan, U of P, devry, ITT tech, strayer, everest, capella, argosy, brown mackie, american public university, keiser, sanford brown, ashford, concorde career, ashworth, westwood and others as they are merely out to "make a profit" (** and their course credits usually do NOT transfer to other schools, anyway).
How can I put my computer up for sale?
A person can put their computer up for sale by going on eBay. All they have to do is pack the computer up and wait for someone to purchase it as a truck will come buy to puck up your packaged item for the buyer.
Why do computers get slower over time?
Besides the technology becoming dated and therefore slower than when compared to newer models, there are a number of factors:
Excess of old and redundant software. Every time the computer boots it loads small fragments of these old programs which are not necessarily used.
The disk drive becomes fragmented, meaning that data for a single program or file can be stored over many physical locations on the drive. This means the read/ seek time when accessing the file is slower as it has to physically load from a number of disk locations.
Easiest way to speed up an old computer is:
1. Uninstall all old programs that are no longer needed on the computer.
2. Empty the recycle bin, delete all old temporary or cache files (ie. Explorer cache files).
3. Use a program such as Piriform CCleaner to find and delete all old registry entries from the file registry; you can use the same program to delete old temporary and cache files.
4. Use a disk de-fragmenter program to consolidate physical files on the drive so that the access speed is increased.
ALWAYS MAKE A BACKUP BEFORE RESORTING TO SOMETHING LIKE THIS, DO NOT DISTURB THE PROGRAMS ONCE THEY START CLEANING UP YOUR PC, THIS CAN CAUSE FILE CORRUPTION.
What are some ways one can speed up their computer?
Follow these steps to speed up PC:-
1. Do defragmentation.
2. run scandisk.
3. stop unneeded processes from start up of "msconfig".
4. download registry cleaner and install it in your PC which will scan your whole PC for registry errors..
Restart your PC and you will get satisfied with your PC speed.
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1) Optimize BIOS settings
In the setting wizard of Bios, please go to the option "Advanced BIOS Feature" and them move the cursor to "First Boot Device" and then select the tab "HDD-O" (start from hard drive) but not the default "Floppy". This will help increase computer startup speed, extend floppy's lifespan and speed up your computer.
2) Cancel Window boot screen
To speed up your computer, you can cancel the loading of the Windows boot screen when starting it up. You can simply follow the steps here: 1) make all folders and files visible by going to My Computer, Tools, and Folder Options to tick "Display contents of system folders" and "Show hidden files and folders" within advanced settings; 2) find the file "Msdos.sys" and cancel its "Read-only" properties, then you can open it with Plain Text Editor to add "logo=0" at the end of the "Option" paragraph. In this way, the Windows boot screen will not be loaded when starting up the computer, speeding up computers.
3) Remove some unnecessary desktop icons
When starting up the computer, it is necessary for the system to search and then display the desktop icons one by one. This will consume a very longer time if there are too many desktop icons. So a removal of the unnecessary desktop icons is needed in order to speed up computer.
4) Optimize startup entries
We all know that if too many programs run at once, the computer will become slower. This happens the same when starting up the computer. So it is a must to disable some entries which do not need to run at Windows startups to increase computer speed. You can go to Start -> Run -> type "msconfig" to access Startup. Here, you can disable those that do not need to automatically run at booting up computer. In this way, you can easily increase computer speed.
Information Technology is a 'classification' term that defines all components of the systems that gather, share and store information. A computer is a component of the 'IT' division. Other components are the Network devices (routers, switches, hubs, etc.), communication devices (Modems, PBXs, etc.), storage devices (optical drives, mass storage drives, back up units, etc.), etc.
Logistics Section
How do you lock someone's computer?
go to control panel, head over to security or whatever its called, create a password and username and make yourself administrator. Now whenever you log in you will need your username and password to log on.
What is the similarity of a brain and a computers?
This content was published by Andrew Tomazos and written by several hundred members of the former Internet Knowledge Base project.
The Human Brain and Computer as Cascading Computation Welcome to the first edition of the Internet Knowledge Base newsletter.We want to start by making a simplified comparison between a human brain and a computer.
== THE HUMAN BRAIN==
"The human brain is my second favorite organ." - Woody Allen.
Outside things act upon the human body. Light enters the eyes. Forces press upon the skin. Air vibrates against the ears. These outside forces cause long thin organic wires inside our body, our nerves, our sensory neurons, to send electrical pulses into our brains.
Our brains consist of about 150 thousand million neurons. If a neuron were the size of a toy marble, then your brain would be the size of a large suburban house. A few neurons accept external input signals, and are called sensory neurons. The ones that emit external signals are called motor neurons. The rest are interconnected in the middle.
Most neurons have connections with other neurons, about 10,000 on average. Inbound neuron connections are called dendrites and outbound ones are called axons. Where the axon of one neuron connects with the dendrite of another neuron is a small chemical soup called a synapse.
When the electrical signals arrive at the brain from the nerves they are converted to chemicals at the synapse. These then add or subtract the desire to fire on the neurons that follow.
When the total desire to fire on a neuron from the sum of its incoming connections reaches a critical level, it causes the neuron to convert the chemicals at the synapse into one big electric pulse and fires it down its axons. This pulse is then converted to chemicals at the other neurons' synapses, and the cycle continues.
What is interesting is that when a neuron fires, it (A) resets its synapses and (B) fires a short sharp pulse down all its axons. This is as opposed to firing a little bit, or a lot, or over a long period. Neurons do not fire continuous signals, varying the strength of the signal over time - instead, neurons send a pulse and then reset.
This storm of neurons firing continues all the time. This is what brain activity is. Eventually the neurons connected to our motor neurons fire, in turn causing some motor neurons to fire. Electricity travels down into our muscles. We walk, we talk, we type.
Each neuron in a way, takes thousands of results from other neurons, weighs them, then broadcasts the result to lots of other neurons. In a sense they both co-operate and compete.
150 thousand million of them are doing this at the same time.
Now lets talk about computers.
==THE COMPUTER ==
An average computer, like the one from which you are reading this message, also has a brain in a sense.
Computers hold pieces of data in a variety of different areas. (Technical: RAM, ROM, hard drive, CPU registers, BIOS, etc)
People press keys on the keyboard, move around the mouse, generating inputs for the computer. These create electric signals that pulse into the computer which sends the signals inside it, making changes to some of these pieces of data.
From the time you switch your computer on, until you turn it off, a power source is used to send a regular electrical pulse throughout the system at many thousand million times per second. With each beat of this pulse, a big element inside your computer, called the processor, takes a piece of data, and uses it as an instruction. A small calculation happens or a manipulation on one or more other pieces of data. With the next pulse the processor takes another piece of data from the pool, and the cycle continues.
The manipulation the computer makes is based on data, and the data manipulated can end up being used to determine yet other manipulations.
This process continues until the data associated with output devices is changed. When it does, electric signals are sent from it. The picture on the monitor changes, the speakers emit a sound.
==THE HUMAN-BRAIN & COMPUTER SYSTEM==
The parallels are obvious. The outside world affects the system. Stimuli are converted to electric pulses, and sent into the system. The system makes thousands of millions of on-going cascading little manipulations using electrical pulses. Some of these end up leaving the system as output.
Now, when a person sits on a computer what is happening? The output of the computer is converted to light and sound at the monitor and speakers. This then travels into the eyes and ears of the person. Electrical signals enter the brain, are processed, generating signals which travel down to the fingers. We press keys and move mice. These actions in turn are converted to electrical signals, enter the computer, and so on. The human brain and the computer brain are part of one big system.
Everyone sitting at the computer using it, looks pretty much the same. They stare ahead at the pretty lights and twitch their fingers and forearms a lot. Imagine for a second if we take someone from 2000 years ago and show them someone using a computer. What would they think was happening here? Most likely they would think we were in some kind of weird trance. The fact is you can't see what is happening inside the system, any more than you can look inside someone that is thinking to himself. The human and computer are closed in a loop together.
At least they used to be, now we have invisible electrical pulses or electromagnetic radiation that connect the human-computer system to other human-computer systems, through networks and the Internet.
This is a simplified explanation of human brain function. There also are many incoming and outgoing neurons in the autonomic nervous system, a highly complex system that regulates the mostly unconscious, vegetative functions of the body, things like controlling heart rate and blood pressure, temperature regulation, digestion, sexual responses and the hormone secretion of various endocrine glands.
In fact, this cascading approach to processing is a very simplified example of human interaction or the underlying frameworks in which the mill of the universe itself grinds. Energy interacting with varying arrangements of itself. When you think about it, any interaction has a cascading effect on all future contaminated events
Neurons use a traveling charge differential (a depolarization) in their outer membrane caused by a sudden ionic exchange between the inside and the outside of the cell. So what difference does this make? It means a neuron transmits information much more slowly than an electrical device. A neuron is capable of firing at a maximum speed of about once every 60th or 70th of a second, whereas silicon based devices such as microprocessors work a speeds millions of times faster. The massive parallelism of a brain is what makes it possible for it to compete with the microprocessor. But for how long?
So which one is faster, human brain or computer? IBM BlueGene is a very fast computer. It is currently being used to simulate a neural column at the molecular level. A neural column is a 1,000,000th chunk of the human brain. So if you look at it like that, human brains are 1,000,000 times faster than a computer at this moment. How long will take until computers catch up? About 60 years, in terms of raw processing power.
The brain also has some key self-modifying abilities which are both little-known and difficult to replicate in a computer. Neurons physically move around in the brain as you learn, making and breaking connections according to need. The Glial cells make up 90% of the brain and serve some part in our cognition. They were thought to be inactive and are the source of that old 60s quote "you only use 10% of your brain". More recently they have been demonstrated to take part in brain activity on a chemical basis rather than on a half-chemical half-electrical basis. Interesting, their effect becomes much stronger when any given stimulus is repeated 3 times.
Until very recently, what was thought to be Junk DNA (that part of the DNA which appeared not to do anything) actually becomes activated in nerve cells in the brain and central nervous system. That is, not only our understanding of genetics missing great swathes of information, but genetics appears to directly affect how our brains adapt. Since the genetic code is comparable to a program (or operating system?) written in trinary, there are parallels (sci-fi?) with AI systems written in self-modifying code.
What are the best laptop computer prices?
Some best rated lap tops are HP, Mac (Apple), Toshiba, and Sony. Price ranges vary by the size of the lap top, the capabilities and other specs. MOst lap tops range anywhere from $400-$2000.
I find Amazon a good place to get reviews of Laptops and because the buyers rate their purchases you can see the good and bad points of a whole range of laptops.
Based on ratings on Amazon and sales I was able to make a list of the Best rated Laptops and the Toshiba Satellite L655-S%!%* was the best selling when I checked.
What is the purpose of REG EDIT?
RegEdit is used to Change/Modify Registry files used by windows and programs.
Please be careful when using RegEdit as you can cause damage to windows and your programs if you are not careful.
How can you log onto a computer if you forgot your password and its windows 7?
Press ALT+SHIFT+DELETE two times on the windows logon screen and then enter your username as administrator and password blank if you are using Windows XP
Use ERD Commander disk to reset your windows password. I have tried several of times and it works perfectly :-)
What is one old way to put data into a computer?
They used to have to carve them into rock tablets. The first recorded event of this was the carving of the Ten Commandments
computer
Which program will tell computer what to do?
it is called an operating system(OS) like windows, Linux , mac
Do you need a tv licence to watch cctv recordings on a computer?
do i need a tv licence to watch my tv via my computer via a internet supplyer
What is the 5 advantages in the computer?
Advantges:
-data and information storage
-good source of information
-work becomes easier
-communication with friends and coworkers
-automate various tasks
Disadvantages:
-may distract from studies
-spoils social life
-effect eyesight
-cause weight gain
How do health and safety guidelines affect the use of IT?
Safe computer use
Many people use computers or visual display units (VDUs) as part of their job. Most suffer no ill-effects. VDUs don't give out harmful levels of radiation and rarely cause skin complaints.
If you use one and suffer ill-effects it may be because of the way you are using the computer. For example, you might suffer from strain in the back of the hand due to excessive 'mouse' clicking, or stress or neckache if you use a VDU without a break for a long time. Problems like these can be avoided by a well-designed workstation and job.
Two of the most important pieces of health and safety legislation affecting educational establishments across the UK are the Health and Safety at Work, etc Act 1974 and the Management of Health and Safety at Work Regulations 1999. These set the standards that must be met to ensure the health and safety of all employees and others who may be affected by any work activity. Other regulations also exist to cover work activities that carry specific risks, for example lifting and carrying, computer work and electricity.
The main piece of legislation affecting the management of health and safety in educational establishments across all sectors is the Health and Safety at Work, etc Act 1974 (HSWA). This Act provides a framework for ensuring the health and safety of all employees in any work activity. It also provides for the health and safety of anyone who may be affected by work activities in eg pupils/students and visitors to educational sites, including parents and contractors.
Law
The number of computers in the workplace has increased rapidly over the last few years and it is now quite normal for most staff in voluntary organisations to be exposed to computer usage. The Health and Safety at Work Act lays down legal standards for computer equipment and requires employers to take steps to minimise risks for all workers. Workers have received substantial damages for injuries caused through use of computers where the employer could have foreseen the risk but did nothing about it.
How do you get the word out about your new website?
I recommend this site, which is used by most major companies
In this Semrush review, I’m going to put one of the best-known SEO tools available to the test. I’m going to discuss how it stacks up in terms of: •Domain analysis •Keyword research features •Rank tracking •Backlink analysis •Link building tools •Site auditing •Ease of use •Pricing and value for money •Support …and more! Let’s start with an important question…
What is Semrush? Simply put, Semrush is a product that helps you optimize your website for search engines. Created in 2008 by Oleg Shchegolev and Dmitry Melnikov, it now has a very large user base — over 7 million users, according to the company — and is one of the most popular SEO tools currently available. Semrush works by giving you a lot of information, which you can use to either: create new web content that is likely to attract traffic identify link-building opportunities tweak technical aspects of your site content so that it achieves a higher search ranking. For example, Semrush can give you keyword suggestions (based on phrases you enter) that can be used as the basis for writing blog posts that are likely to perform well in search results. It can also tell you how difficult it will be to rank for specific search phrases. It will suggest websites that might be worth approaching for backlinks. And it allows you to perform an “SEO audit” on your website to find out if there are any technical improvements you can make to it that will help you achieve better search results. That’s just the beginning though — there are many other features provided by Semrush that are designed to help you improve your site’s position in search results. I’ll go through these in depth below, highlighting all their pros and cons. So let’s dive in! I’ll kick things off by looking at something called domain analysis.
Link in the bio
How many people in the UK have computers?
I'm actually quite sure over 3.53 billion(3,530,000,000) people have computers.
This post was written in 29/10/2010.
Where can i get computer networking basics briefly?
Lynda is an on-line learning website that offers comprehensive tutorials in computer networking basics. This site has an established reputation for good tutorials having sold over 2 million memberships. Monthly membership is currently $25 per month.
