Computers

It all depends on the bitrate of your songs.

The higher the bitrate, the higher the quality.

Many songs are 128 kilobytes per second, or just over megabyte per minute.

Most songs are Three to Four minutes long.

That makes one, 3.5 minute song be around 4 megabytes each.

20000 mb is the same as 20gb

20000 / 4 =

5000

songs!

The numerals computers understand are: BINARY NUMBERS -ZERO and ONE.

COMPUTER Technicians compute capacities and abilities of Computing devices in BINARY Mathematics.

For e.g.:

Single DIGIT of Zero or One - One BIT

Eight BITS make - One BYTE

210 (1024) BYTES make - One KB (Kilobyte)

210 (1024) KBs make - One MB (Megabyte)

210 (1024) MBs make - OneGB (Gigabyte)

210 (1024) GBs make - One TB (Terabyte)

210 (1024) TBs make - One PB (Petabyte)

The most common security issue of computer security today is lack of AWARENESS, we are falling behind in awareness of computer security's understanding.

computer security the common issues

• No Antivirus, Dummy ineffective antivirues or no regular updates
• No Operating system patching.

• No Firewalls enabled or properly configured
• Weak password containing easy combination or easy answers to security questions.
• Phishing attacks
• Lack of Backup or No backup of systems
• Providing sensitive information online for registration of social networking and other websites, which match your personal details matching your bank and other sensitive information.

Prevention:

• Evaluate your Antivirus before purchasing and installing. Ask as expert which antivirus is good.. I normally use Kaspersky Internet Security as home user. The good thing is that if you have online Barclay's account they will provide you one year free license valid upto 3 computers. All you have to do is ask them online banking details and then login to your page for Kaspersky Internet Security offer. Also HsbC bank gives one year free Norton 360 and so other banks

• Visit regularly your operating system websites and install regular updates and patches to keep your operating system updated and patched against Bugs, security holes and virues known to your operating systm vendor. Normally you just click windows update for windows patching.

• Install a firewall and make sure you update your firewall regularly. Most of antivirus solutions are equipped with firewalls, make sure you enable firewall. When firewall detects some communication between you and outside world, it pop ups a message now make sure you only allow the programs you trust, wrong selection could result in surprises

• While choosing a password make sure that the password is combination of smallandCAPSletTeRwithNuMeriCal343 Values.. and don't use same password for Facebook and your bank security questions please. Also Change your password frequently, don't let your password old over 6 months time.

• Phishing is very common security threat, you receive an email from someone in Africa trying to transfer you billions, a link in email asking registration for free gifts, a paypal email asking you to validate information and so on.. list is too long.. All you need to do is check two things. 1: Make sure that you really need to visit the site you are going to click on. 2: When you take mouse pointer on link of webpage, it should show same address on status bar. Phishing techniques ask you to click on www.abc.com but check in status bar it will be taking you to www.xyz.com site.. which is different from the site actually dispalyed above.

• Use regular backup of your system into external harddrive or Pendrive depends on capacity and importance of data. In windows you can use windowsbackup..

• Do not disclose any information on social networking websites, as these websites replicate data with other websites. Even though you delete your information from one website does not mean that data is removed from Internet the data remains on Internet as it get replicated with other websites. Also never give correct date of birth and other sensitive personal information while registering on websites for email or other social activities online.

Hope that will be helpful.

Mazhar

In VHDL, entity is the keyword for defining a new object. In SGML and its derived markup languages HTML and XML, an entity is a named body of data associated with a document. Once defined, an entity can be referenced any number of times within the document, via entity references. An entity typically consists of a sequence of one or more characters, either encapsulated within a declaration of the entity's existence, or encoded and stored externally in a text file. Such entities and their references are comparable to macros and include files in programming languages. However, entities don't necessarily have to contain parseable text; they may also be binary files that are included in a document only by reference, with the entity name as the value of an ENTITY-type attribute.

Answer:

An entity is something that has a distinct, separate existence, though it need not be a material existence. In particular, abstractions and legal fictions are usually regarded as entities. In general, there is also no presumption that an entity is animate. Entities are used in system developmental models that display communications and internal processing of, say, documents compared to order processing.

An entity could be viewed as a set containing subsets. In philosophy, such sets are said to be abstract objects.

Sometimes, the word entity is used in a general sense of a being, whether or not the referent has material existence; e.g., is often referred to as an entity with no corporeal form, such as a language. It is also often used to refer to ghosts and other spirits. Taken further, entity sometimes refers to existence or being itself. For example, the former U.S. diplomat George F. Kennan once said that "the policy of the government of the United States is to seek . . . to preserve Chinese territorial and administrative entity.

Answer:

An entity is a legally recognized and formally structured grouping of people focused on some common cause or objective.

Examples

Here are some examples of entities:

SIL

an SIL branch

UNESCO

Advantage #1 - Stability

If you have used other operating systems, once you have made the switch to Linux, you will notice that Linux has an edge over Windows here. I can remember rebooting Windows many times over the years, because an application crashed, and I couldn't continue working. Linux can crash also, but it is much harder to do. If an application crashes in Linux, it will usually not harm the kernel or other processes.

Advantage #2 - Free Software

Most software can be obtained without cost for Linux. For example, one thing that has kept people from Linux is the lack of office software. That has changed with Open Office, and now you can edit documents and presentations from the popular Microsoft software. The conversion isn't 100% perfect, but it has worked remarkably well in allowing me to correspond and use documents that people send me via e-mail or the web.

Advantage #3 - Runs on old hardware

If you have an old 386 or 486 laying around collecting dust, you can use this to run Linux. I remember running Linux just fine on a Pentium 100 with a 1 GB disk drive, and 16 MB of memory. One use of an old machine like that could be a file server. Just go to your computer store, buy a large hard disk (as long as your old stuff can support it), and you can make a great storage server. With all the digital pictures and movies around today, this could be a great use for Linux. Look into using Samba, a server application for Linux that allows you to make your machine share the disk as a Windows share.

Advantage #4 - Security

Linux has the advantage of the code being in the public domain. This can be a double-edged sword; while you can look at the code, and developers can fix holes rapidly, it also means hackers can find bad code. I have been very impressed with the security of Linux, and the programs that run on it. I think having the code out in the open, and the ability to fix things yourself if necessary is a big plus. Who likes to work blind? With some distributions, on installation the computer will ask you what levels of security you would like for your system. You can be very trusting, or you can be paranoid. Linux gives you this flexiblity.

Disadvantage #1 - Learning curve

I won't lie to you; Linux is going to take some time to learn. I know that our society likes to be instantly gratified. Learning Linux is definitely worth your time, but to really master it, you will need to spend some good time in front of your machine tinkering with things. Don't expect to be an expert after reading something like "Linux for Dummies". If you are contemplating this for your company, you will need to budget some money for training and learning time.

Disadvantage #2 - Equivalent programs

While I gave the example before of an office suite of programs that is working well, there are still applications that do not exist in Linux. Thankfully, this list has become much more narrow in recent months. You will want to think carefully when you switch to Linux about what programs you currently use, and if they have Linux support for them. It may not make sense for you to switch if you are going to spend tons of time converting databases and application data.

Disadvantage #3 - More technical ability needed

You will want to make sure that you train someone in Linux really well. Alternately, you could hire someone who has experience with Linux. A good Linux administrator needs to be on hand as you start to migrate your systems over. This is a disadvantage financially, at least in the beginning. You may find over time, however, that you only need a temporary administrator to handle the routine tasks.

Disadvantage #4 - Not all hardware compatible

Some of the latest and greatest hardware that is being produced is not compatible with Linux. At least, not yet. The people that contribute program code and drivers to the Linux kernel are great at including support fairly quickly. Until that time, not everything you buy for hardware in your system may work. I've had to rely on third-party drivers and other means to make hardware like a new Ethernet card work. Eventually, the support will be built in. One thing you can do is before your purchase, ask if the hardware vendor has support for Linux. Some manufacturers do write their own Linux drivers and distribute them with your purchase, making it very easy to integrate with your existing system.