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Friday, 30 December 2011
Thursday, 8 December 2011
WebSite
A website is
actually a collection of files and documents which is saved in a server
(it's a specific computer that is connected to the internet all the
time). Every file has its own address that called as URL (Uniform
Resource Locators). If you want to have a website, here are things that
you need :
Website File :
There is an easiest language to make a website file is HTML (Hyper Text Mark up Language). Even you know nothing about this HTML languange programming, you still can make a simple website file by using a regular word processor software just like Microsoft Office Word, Microsoft Office Excell, Microsoft frontpage or Openoffice for Linux. The only thing you have to do is saving your file as HTML document with .html extension by clicking "save as" tab and chose .html file option
Please note that you must name your file with index.html if you want to make that file become the first page (home page) of your website.
Website Address (URL = Uniform Resource Locator):
There are 4 important parts of URL. The first part is called Protocol, we know it as http:// stands for Hyper Text Transfer Protocol. The 2nd one is domain name (in many cases subdomain is included) e.g., www.mydomain.com or www.subdomain.mydomain.com. The 3rd one is Directory, just like a directory (folder) in your computer where the files located in specific area. The 4th one is file name e.g., index.html or myfiles.html. Here is an example of complete address of a website file http://small-appliances.co.cc/
Website Hosting :
You will need a server to host your file before it can be accessed through the Internet. In many cases you have to pay a hosting company to rent a space in their server and buying the address (domain) of your website, but with this Free Tutorial you will learn how to make a website without cost you any cents for buying the domain address & hosting space. After you have a good skill to build a good looking website, you can try to buy it and find the cheapest webhosting by using the search engine below.
Website File :
There is an easiest language to make a website file is HTML (Hyper Text Mark up Language). Even you know nothing about this HTML languange programming, you still can make a simple website file by using a regular word processor software just like Microsoft Office Word, Microsoft Office Excell, Microsoft frontpage or Openoffice for Linux. The only thing you have to do is saving your file as HTML document with .html extension by clicking "save as" tab and chose .html file option
Please note that you must name your file with index.html if you want to make that file become the first page (home page) of your website.
Website Address (URL = Uniform Resource Locator):
There are 4 important parts of URL. The first part is called Protocol, we know it as http:// stands for Hyper Text Transfer Protocol. The 2nd one is domain name (in many cases subdomain is included) e.g., www.mydomain.com or www.subdomain.mydomain.com. The 3rd one is Directory, just like a directory (folder) in your computer where the files located in specific area. The 4th one is file name e.g., index.html or myfiles.html. Here is an example of complete address of a website file http://small-appliances.co.cc/
Website Hosting :
You will need a server to host your file before it can be accessed through the Internet. In many cases you have to pay a hosting company to rent a space in their server and buying the address (domain) of your website, but with this Free Tutorial you will learn how to make a website without cost you any cents for buying the domain address & hosting space. After you have a good skill to build a good looking website, you can try to buy it and find the cheapest webhosting by using the search engine below.
What A URL???????
What's a URL?
www.example.com, or foo.example.com.During the blog creation process, you'll have to select a URL for your blog. Visitors can access your blog by typing this URL into the address bar of their browsers.
Since there are already a large number of Blogspot blogs, you'll need to get creative and possibly try a few different URLs before you find one that's available. The format for your URL will be
nameyouchoose.blogspot.com.When selecting your blog's URL, remember that you can only use letters, numbers, and hyphens. Special characters such as $, #, &, etc. are not permitted.
You can also host your blog on a custom domain.
List Blog top
| The Top 100 Gadget Blogs ranking is here to help you find out which of the gadget blogs from around the world are the ones to watch out for. Ranking is based on information from Alexa and Technorati which combined, give the blog a ranking. The lower the rank number, the higher in the top 100 gadget blogs list the particular blog will appear. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Information for the Top 100 Gadget Blogs list is compiled every week. At the bottom of the top 100 list you will find code to add a top 100 blog button to your gadget blog. Congratulations to all those who made the Top 100. If you own a gadget blog and are not listed then drop us an email and we will add it for you. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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ROm
Read-only memory (ROM) is a class of storage medium used in computers
and other electronic devices. Data stored in ROM cannot be modified, or
can be modified only slowly or with difficulty, so it is mainly used to
distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).
In its strictest sense, ROM refers only to mask ROM (the oldest type of solid state ROM), which is fabricated with the desired data permanently stored in it, and thus can never be modified. Despite the simplicity, speed and economies of scale of mask ROM, field-programmability often make reprogrammable memories more flexible and inexpensive. As of 2007[update], actual ROM circuitry is therefore mainly used for applications such as microcode, and similar structures, on various kinds of digital processors (i.e. not only CPUs).
Other types of non-volatile memory such as erasable programmable read only memory (EPROM) and electrically erasable programmable read-only memory (EEPROM or Flash ROM) are sometimes referred to, in an abbreviated way, as "read-only memory" (ROM), but this is actually a misnomer because these types of memory can be erased and re-programmed multiple times[1]. When used in this less precise way, "ROM" indicates a non-volatile memory which serves functions typically provided by mask ROM, such as storage of program code and nonvolatile data.
In its strictest sense, ROM refers only to mask ROM (the oldest type of solid state ROM), which is fabricated with the desired data permanently stored in it, and thus can never be modified. Despite the simplicity, speed and economies of scale of mask ROM, field-programmability often make reprogrammable memories more flexible and inexpensive. As of 2007[update], actual ROM circuitry is therefore mainly used for applications such as microcode, and similar structures, on various kinds of digital processors (i.e. not only CPUs).
Other types of non-volatile memory such as erasable programmable read only memory (EPROM) and electrically erasable programmable read-only memory (EEPROM or Flash ROM) are sometimes referred to, in an abbreviated way, as "read-only memory" (ROM), but this is actually a misnomer because these types of memory can be erased and re-programmed multiple times[1]. When used in this less precise way, "ROM" indicates a non-volatile memory which serves functions typically provided by mask ROM, such as storage of program code and nonvolatile data.
Database Management System(DBMS)
A database management system (DBMS) is a software package with computer programs that control the creation, maintenance, and use of a database. It allows organizations to conveniently develop databases for various applications by database administrators (DBAs) and other specialists. A database is an integrated collection of data records, files, and other objects. A DBMS allows different user application programs to concurrently access the same database. DBMSs may use a variety of database models, such as the relational model or object model, to conveniently describe and support applications. It typically supports query languages,
which are in fact high-level programming languages, dedicated database
languages that considerably simplify writing database application
programs. Database languages also simplify the database organization as
well as retrieving and presenting information from it. A DBMS provides
facilities for controlling data access, enforcing data integrity, managing concurrency control, and recovering the database after failures and restoring it from backup files, as well as maintaining database security.
Meaning of....??????
computer software - (computer science) written programs or procedures or
rules and associated documentation pertaining to the operation of a computer
system and that are stored in read/write memory; "the market for software
is expected to expand"
computer science, computing
- the branch of engineering science that studies (with the aid of computers)
computable processes and structures
computer
code, code - (computer science) the symbolic
arrangement of data or instructions in a computer program or the set of such
instructions
alpha
software - a first release of a software product that is usually
tested only by the developers
authoring language - software that can be used to
develop interactive computer programs without the technically demanding task of
computer programming
beta
software - software that has not yet been released but has received
an alpha test and still has more bugs than a regular release; "beta
software is usually available only to particular users who will test it"
compatible software - software that can run on
different computers without modification
compatible software - application software
programs that share common conventions so they can be utilized together
computer-aided design, CAD
- software used in art and architecture and engineering and manufacturing to
assist in precision drawing
freeware
- software that is provided without charge
groupware
- software that can be used by a group of people who are working on the same
information but may be distributed in space
operating system, OS
- (computer science) software that controls the execution of computer programs
and may provide various services
computer program, computer programme, programme,
program
- (computer science) a sequence of instructions that a computer can interpret
and execute; "the program required several hundred lines of code"
subprogram,
subroutine,
procedure,
routine,
function
- a set sequence of steps, part of larger computer program
shareware
- software that is available free of charge; may be distributed for evaluation
with a fee requested for additional features or a manual etc.
shrink-wrapped software - software on CD-ROMs
that are boxed and shrink-wrapped and sold in stores (implying a widely
supported standard platform)
spyware
- computer software that obtains information from a user's computer without the
user's knowledge or consent
supervisory software - specialized programs that
reside permanently in the computer's main memory and control the processing of
user's programs
software documentation, documentation
- program listings or technical manuals describing the operation and use of
programs
database management system, DBMS
- a software system that facilitates the creation and maintenance and use of an
electronic database
upgrade
- software that provides better performance than an earlier version did
What is RAMAC???
RAMAC (which stood for random access method of accounting and control) was the world's first computer disk storage system. Developed by IBM engineers in San Jose and introduced in 1957, RAMAC was marketed as a business machine for accounting applications. Prior to RAMAC, computer storage was largely reliant on magnetic tape. RAMAC's disk-based storage introduced moveable read/write heads, which enabled a semi-random access capability. This ability was a momentous achievement, both for IBM and for the computing world in general, because fast random access to large volumes of data now made it practical to have interactive computer systems. RAMAC's development also led to IBM opening its first storage manufacturing plant. As part of the IBM 350, RAMAC was a system that used fifty metallic disks coated on each side with a magnetic iron oxide. The coating was a variation of the paint primer used on the Golden Gate Bridge. The disks, which were two feet in diameter, were arranged on a rotating spindle. Data was recorded on both sides of the disks, each holding a hundred concentric tracks, for a storage capacity of 5 megabytes. An access arm under servo control moved two read/write heads to access to any of the tracks. Originally, RAMAC's purchase price worked out to about $10,000 per megabyte of storage capacity. By 1997, the price per megabyte had dropped to about ten cents. The system you see above includes the hard disk, a card reader, a CPU and a printer. It weighed over a ton. (Also see RAMAC, a line of storage products from IBM.)
Definition Hard disk
A hard disk is part of a unit, often
called a "disk drive," "hard drive," or "hard disk
drive," that stores and provides relatively quick access to large amounts
of data on an electromagnetically charged surface or set of surfaces. Today's
computers typically come with a hard disk that contains several billion bytes
(gigabytes) of storage.
A hard disk is really a set of
stacked "disks," each of which, like phonograph records, has data
recorded electromagnetically in concentric circles or "tracks" on the
disk. A "head" (something like a phonograph arm but in a relatively
fixed position) records (writes) or reads the information on the tracks. Two
heads, one on each side of a disk, read or write the data as the disk spins.
Each read or write operation requires that data be located, which is an
operation called a "seek." (Data already in a disk cache,
however, will be located more quickly.)
A hard disk/drive unit comes with a
set rotation speed varying from 4500 to 7200 rpm. Disk access time is measured
in milliseconds. Although the physical location can be identified with
cylinder, track, and sector locations, these are actually mapped to a logical
block address (LBA) that works with the larger address range on
today's hard disks.
Related glossary terms: magnetoresistive head technology, yottabyte, serverless backup, byte, partition, InfiniBand, failover, RAMAC (random access method of accounting and control),
Fibre Channel, continuous data protection (storage convergence)
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