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Sunday 20 June 2010

TOP 10 LIQUID SPILLS THAT KILL LAPTOPS

MOST COMMON KILLERS OF LAPTOP

#1: COFFEE (4O% of all Spills)
E.g Coffees that contain Caffeine, Cafestol, Caffeic acid, and Myriad additives like Dairy cream, powdered cream, sugar, Aspartame {Equal, Saccharine, Sucralose (Slenda)}

#2: WATER (20% of Spills)
NB: Distilled Water, will not conduct Electricity, but add a few Grains of Salt or other Minerals and Voila, and we will have a short Circuit.

#3: SODA (12% of spills)
This is due to the Sugar and Acidity of thd Liquid CO2 which are dissolved in it & it also causes Soft drinks to be Extra - Corrosive.

#4: WINE (10% of Spills)
Wine, which is a Double - fisted KUNG FU PUNCH of Liquid spills - Sugar & Acid combine into a Corrosion Stew. Wines contain Ethy Alcohol (12 - 20% ) along with remnants of the Processing including Yeast sugar, Sulfite preservatives, grape parts and Acetaldehyde. Together, these works as both Corrosive Soup and a Circuit shorter.

#5: BEER (6%)
Beer, which is part water,sugar & Brown goo, malted Barley, Hops, Sorghum, Sucrose etc. Cause damages, as almost all are Corrosive.

#6: SEA WATER (5%)
Sea water which contains some level of Salt (NaCl) works this Magic of Damage.

#7: HOT TEA (3%)
Hot Teas which contains Tannic acid, help in being an effective Conductor, bridges Circuits, creates Shorts & Burn out Components.

#8: HARD LIQUOR (2%)
E.g Brandy, white Russians, Pina Coladas, Vodka, runs the Gamut from pure Ethyl alcohol, causes Corrosion of internal and delicate Parts.

#9: BODILY FLUIDS (1%)
E.g Breast Milk, Urine.

#10: NAIL POLISH REMOVERS (1%)

REMEDIES:
1. Unplug the Laptop,
2. Remove the Battery,
3. Go immediately to a Qualified Repairer.

FOR MORE INFORMATION, YOU CAN CALL ME ON: +2347032608449

Tuesday 8 June 2010

INFORMATION COMMUNICATIONS TECHNOLOGY [ICT]

INFORMATION COMMUNICATIONS TECHNOLOGY [ICT]
A PRATICAL INTRODUCTION TO COMPUTERS & COMMUNICATIONS

A computer is a programmable, multiuse machine that accepts data-raw facts and figures- and processes, or manipulates, it into information we can use, such as summaries, totals or reports.
The purpose of a computer is to speed up problem solving and increase productivity.

DEFINTION OF SOME TERMS
Communication Technology also called telecommunications technology consists of electromagnetic devices and systems for communicating over long distances.

ONLINE: This means using a computer or some other information device, connected via a network, to access information and services from another computer or information device.

THE INTERNET: The mother of all networks is a worldwide computer network that connects hundreds of thousands of smaller networks. These networks link educational, commercial, nonprofit, and military entities, as well as individuals.

A Sever or Network Server; is a central computer that holds collections of data (databases) programs for connecting or supplying services to PCs, workstations, & other devices, which are called Clients. These Clients are linked by a wired or wireless network. The entire network is called a Client / server network.
In small organizations, servers can store files, provide printing stations, and transmit email, while in large organizations, they may also house enormous libraries of financial, sales, and product info how Computers work.

Data consists of the raw facts & figures that are processed into information, while Information is data that has been summarized or otherwise manipulated for use in decision making.

Hardware consists of all the machinery & equipment in a computer system e.g. keyboard, mouse.

Software or programs consists of all the electronic instructions that tell the computer how to perform a task. E.g.; Ms Windows & Office XP.

Basic operations / Functions of a computer are:
1. Input
2. Processing
3. Storage
4. Output also
5. Communications.

Input is whatever is put in to a computer system using keyboard etc.
Processing is the manipulation a computer does to transform data into info. It is done by the CPU- Central Processing Unit.

Storage:-Temporary/Primary storage- holds data waiting to be processed.
- Permanent/ Secondary storage-stores data or info. Permanently.
Output is whatever is output from (put out of) the computer system- results of processing, usually information.

Communications often data or information can be transmitted by modern to or from other computers, as via email or posting to a website.
NB: When an email is being deleted, from your inbox/mail address, it still remains in your hard disk, but can be removed only by special software’s such as Spytech Eradicator & window washer.

PARTS OF INFORMATION TECHNOLOGY (IT)
There are two (2) parts of Information Technology:
Computer Technology:
A computer is a programmable, multiuse machine that accepts data-raw facts and figures- and processes, or manipulates, it into information we can use, such as summaries, totals or reports.
Communication Technology:
Communication technology also called telecommunications technology consists of electromagnetic devices and systems for communicating over long distances, thereby making use of a Computer or some other information devices, connected via a network, to access information and services from another computer or information device.

TYPES/VARIETIES/SIZES/CATEGORIES OF MACHINES OR COMPUTERS.

SUPER COMPUTERS:
These are high-capacity machines with thousands of processors that can perform more than several trillion calculations per second. They can be applied in telecommunication networks (E.g. MTN, AT& T, Verizion network, GLO, Etisalat etc), census count, forecasting weather, designing aircraft, modeling molecules, breaking encryption codes, and simulating explosion of nuclear bombs. It has now recently been used for business purposes. E.g.:- Sifting demographic marketing information and for creating film animation.
The fastest in the world cost $350,000 million is the NEC Earth simulator in Yokohama, Japan, has 5,120 main processors, with each eight (8) sub-processors.

MAINFRAME COMPUTER: They are water-or-air-cooled computers that cost $5,000 to $5 million and vary in size, form small, to medium, to large, depending on their use. Small Mainframes are called Midsize Computers, formally called Mini-Computers.
Mainframes are used by large organization such as banks, airlines, insurance companies & colleges for processing millions of transactions.
It processes billions of instructions per second. Often, users access it by means of a termal-which has a display screen and a keyboard and can input & output data but cannot by itself process data.

WORKSTATIONS: Are expensive, powerful personal computers usually used for complex scientific, mathematical & engineering calculations and for Computer-Aided Design (CAD) & Computer-Aided Manufacturing (CAM). They are used for tasks such designing airplane fuselages, prescription drugs, and movie special effects. They have been used to breathe three-dimensional life into movies such as “The Lord of the Rings” & Harry Potter.

MICROCOMPUTERS: Also called personal computers (PCs) which cost $500 to $5,000, can fit next to a disk or on a desktop or can be carried around. They are either stand alone or are connected to a computer network such as LAN- connects, usually by special cable, a group of desktop PCs and other devices, such as printers, in an office or a building.Eg: laptop or also called notebooks computers, PDAs (Personal digitals assistant) desktop & tower PCs.

MICROCONTROLLERS: Also called embedded computers, are the tiny, specialized microprocessors installed in “Smart” appliances & automobiles. They are used in blood pressure monitors, air bag sensors, gas & chemical sensors for water & air & vibration sensors. They are also seen e.g. in microwaves, which enable it to store data about how to cook your potatoes & at what power setting.

CYBERSPACE
This encompasses not only the online world and the internet in particular but also the whole wired and wireless world of communication in general – the non physical terrain created by computer and communications system. It can also be said to be “where you go when you go online with your computer or any browse able device”.
Cyberspace comprises of:
a. The Internet and
b. The World Wide Web (www). (See Definitions as above).

THE WORLD WIDE WEB (WWW)
The World Wide Web (www), which developed in the early 1990s, usually called the web, is an interconnected system of internet computers (called Servers) that support specially formatted documents in multimedia form.
Website- The domain on the computer: A computer with a domain name. WebPages- Documents on a website. A webpage is a document on the World Wide Web that includes text, pictures, sound & video.
A Homepage- is the first page you see at a website which looks like a title page of a book. Also called welcome page, which identifies the site & contains links to other pages at the site.
Browsers/Web Browsers- Software for connecting with websites: or simply browser is software that enables users to locate and view web pages & to jump from one page to another.
URL- Uniform Resource Locator- is a string of characters that points to a specific piece of info anywhere on the web.

SEARCH ENGINE
This is an engine or a company that aids in the search or surfing of information from the web or Internet. E.g. Mama.com. Google.com etc.
TYPES OF SEARCH ENGINES
Human- Created Search Sites: When you are looking for Biography.
Computer- Created Search Sites: if you want to see what things show up next on a person’s biography or every instance in which it appears.
Hybrid Search Sites: it generally uses human organization supplemented by computer- created indexes. The idea is to see that nothing falls via the cracks.
Meta Search Sites: It sends your search query/query to several other different search tools & compiles the results so as to present the broadest view. E.g.: Copernic, metacrawler, & Dogpile.

* http://www.nps.gov/yose/widerness.htm

Protocol. Directory
Name or path
Domain name
(Web Server name)
File (document) name & extension.