This is a new category i am starting to know about the things which we use.These days our life has become so mechanical that we act almost like robots...!its no great achievement because robots don't have intelligence.we do the things just to do it and don't understand what is in it.Hence in this category we will know the most known yet unknown things.keep tuned .your comments are most valued..
Lets know computer -1..
Every person who is reading this is using a computer.But do we really understand the computer?how it works?Any person gives the definition that computer is an electronic device that accepts input,process it and gives output.But every person can define computer according to his own needs.
Hence we may have as many definitions as the no. of people using computer!
Are you novices in the field of computers, do not worry after reading this blog post you will become an expert. In this blog we are going to know the hardware of a computer….
Computer is a digital electronic device i.e.it deals with 0s and 1s.computer basically converts any data into its understandable form i.e. machine level language. 1s mean the state of on & 0s mean state of off.
A computer basically consists of input output storage and processing devices.
Let us start from input devices .input devices include keyboard, mouse, scanner etc... Keyboard converts the input data given into a corresponding ASCII (American standard code for information interchange) code. The ASCII code is converted into binary number and is sent through PS/2 connector, which not only accepts data from key board but also powers the key board. Keyboard contains a circuit, which generates the necessary ASCII code when a key is pressed. This data is converted to binary and the required action takes place.
MOUSE stands for mechanically operated universal serial engine. Mouse is a pointing device in the shape of a real mouse. The mechanical movements of a mouse is converted into electrical signals in the mouse using rotational movements of a ball or optical changes ,the mouse’s tail normally ends with PS/2 port(connecting wire).
The other devices also convert different signals into digital logic and fed to computer through ports of motherboard.
Output devices: output devices are devices which displays output. Output is nothing but processed data.monitor, printer etc are some of examples of output devices. Monitor works o he concept of persistence of vision of a human eye. In monitor the screen is divided into several lines which are scanned at a certain time. The intensity of electrical signal gives the description of image (color), thus due to high speed of scanning of lines, an constant image is formed. In an LCD monitor, each pixel has a circuit.It is better to choose an LCD monitor since it consumes less power.
A printer is a device, which converts electrical data into physical format (hard copy) .In a printer a set of electrical signals, activates certain part of printing device thus enabling the required image to be formed on the printed page.
Output devices: output devices are devices which displays output. Output is nothing but processed data.monitor, printer etc are some of examples of output devices. Monitor works o he concept of persistence of vision of a human eye. In monitor the screen is divided into several lines which are scanned at a certain time. The intensity of electrical signal gives the description of image (color), thus due to high speed of scanning of lines, an constant image is formed. In an LCD monitor, each pixel has a circuit.It is better to choose an LCD monitor since it consumes less power.
A printer is a device, which converts electrical data into physical format (hard copy) .In a printer a set of electrical signals, activates certain part of printing device thus enabling the required image to be formed on the printed page.
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