introduction of computer

A video introduction of computer

                                        very useful information in this video.

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Disadvantages of internet

Disadvantages of internet

1. There is a lot of wrong information on the internet. Anyone can post anything, and much of it is garbage. 
2.  There are predators that hang out on the internet waiting to get unsuspecting people in dangerous situations. 
3.  Some people are getting addicted to the internet and thus causing problems with their interactions of friends and loved ones. 
4.  Pornography that can get in the hands of young children too easily. 
5.  Easy to waste a lot of time on the internet. You can start surfing, and then realize far more time has passed than you realized. Internet and television together of added to the more sedentary lifestyles of people which further exacerbates the obesity problem. 
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7.  Internet has a lot of "cheater" sites. People can buy essays and pass them off as their own far more easily than they used to be able to do. 
8.  There are a lot of unscrupulous businesses that have sprung up on the internet to take advantage of people. 
9.  Hackers can create viruses that can get into your personal computer and ruin valuable data. 
10.  Hackers can use the internet for identity theft. 
11.  It can be quite depressing to be on the internet and realize just how uneducated so many people have become in today's society.

microprocessor

Microprocessor

A microprocessor is a computer processor which incorporates the functions of a computer's central processing unit (CPU) on a single integrated circuit (IC),or at most a few integrated circuits. The microprocessor is a multipurpose, clock driven, register based, programmable electronic device which accepts digital or binary data as input, processes it according to instructions stored in its memory, and provides results as output. Microprocessors contain both combinational logic and sequential digital logic. Microprocessors operate on numbers and symbols represented in the binary numeral system.

The integration of a whole CPU onto a single chip or on a few chips greatly reduced the cost of processing power. Integrated circuit processors are produced in large numbers by highly automated processes resulting in a low per unit cost. Single-chip processors increase reliability as there are many fewer electrical connections to fail. As microprocessor designs get faster, the cost of manufacturing a chip (with smaller components built on a semiconductor chip the same size) generally stays the same.

monitor and lcd

Monitor

A computer monitor or a computer display is an electronic visual display for computers. A monitor utransistor liquid crystal display (TFT-LCD) or a flat panel LED display, while older monitors used a cathode ray tubes (CRT). It can be connected to the computer_via VGA, DVI, HDMI, DisplayPort, Thunderbolt, LVDS (Low-voltage differential signaling) or other proprietary connectors and signals.sually comprises the display device, circuitry, casing, and power supply. The display device in modern monitors is typically a thin filmOriginally, computer monitors were used for data processing while television receivers were used for entertainment. From the 1980s onwards, computers (and their monitors) have been used for both data processing and entertainment, while televisions have implemented some computer functionality. The common aspect ratio of televisions, and computer monitors, has changed from 4:3 to 16:10, to 16:9.

LCD(liquid crystal display)

A liquid crystal display (LCD) monitor is a computer monitor or display that uses LCD technology to show clear images, and is found mostly in laptop computers and flat panel monitors. This technology has replaced the traditional cathode ray tube (CRT) monitors, which were the previous standard and once were considered to have better picture quality than early LCD variants. With the introduction of better LCD technology and its continuous improvement, LCD is now the clear leader over CRT, in terms of color and picture quality, not to mention capabilities for large resolutions. Also, LCD monitors may be made much more cheaply than CRT monitors

components of computer

A video explanation components of computer

explain easy method.

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Computer basic component

Computer basic components

               Computers are made of the following basic components.

1. Power Supply- The power supply comes with the case, but this component is mentioned separately since there are various types of power supplies. The one you should get depends on the requirements of your system. This will be discussed in more detail later
2. Motherboard- This is where the core components of your computer reside which are listed below. Also the support cards for video, sound, networking and more are mounted into this board. Microprocessor , Memory
   
   

3. 

   sample(4)

   Hard disk drive- This is where your files are permanently stored on your computer. Also, normally, your operating system is installed here.
   
   CD-ROM drive, Floppy drive
4. Monitor- This device which operates like a TV set lets the user see how the computer is responding to their commands.
5. Keyboard- This is where the user enters text commands into the computer.
6. Mouse- A point and click interface for entering commands which works well in graphical environments.