Sunday, August 25, 2013

Whai is Storage Device?

                        Whai is Storage Device?

The device which can store data is called Storage Device.
                    What is Processor?
                        Functions of processor:

A processor, or "microprocessor," is a small chip that resides in computers and other electronic devices. Its basic job is to receive input and provide the appropriate output. While this may seem like a simple task, modern processors can handle trillions of calculations per second.

The central processor of a computer is also known as the CPU, or "central processing unit." This processor handles all the basic system instructions, such as processing mouse and keyboard input and running applications. Most desktop computers contain a CPU developed by either Intel or AMD, both of which use the x86 processor architecture. Mobile devices, such as laptops and tablets may use Intel and AMD CPUs, but can also use specific mobile processors developed by companies like ARM or Apple.

Modern CPUs often include multiple processing cores, which work together to process instructions. While these "cores" are contained in one physical unit, they are actually individual processors. In fact, if you view your computer's performance with a system monitoring utility like Windows Task Manager (Windows) or Activity Monitor (Mac OS X), you will see separate graphs for each processor. Processors that include two cores are called dual-core processors, while those with four cores are called quad-core processors. Some high-end workstations contain multiple CPUs with multiple cores, allowing a single machine to have eight, twelve, or even more processing cores.

Besides the central processing unit, most desktop and laptop computers also include a GPU. This processor is specifically designed for rendering graphics that are output on a monitor. Desktop computers often have a video card that contains the GPU, while mobile devices usually contain a graphics chip that is integrated into the motherboard. By using separate processors for system and graphics processing, computers are able to handle graphic-intensive applications more efficiently.

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Saturday, August 24, 2013

Ouput Devices

Output devices are used for displaying data after processing by processor. There are many output devices. Some output devices are listed below in a tabulation form with images:


SL NO
Output Devices
Images
1.

Monitor


2.

Projector


3.

Plotter


4.

Speaker


5.
Printer
Printer (Dot Matrix)

InkJet Printer

Laser Printer


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Input Devices

Input devices are used for inserting data into the processor for processing data. There are many input devices. Some input devices are listed below in a tabulation form:


SL NO
Input Devices Name
Images
1.

Mouse


2.

Keyboard


3.

Scanner


4.

Digital Camera


5.

Web Camera


6.

Joysticks


7.

Track Ball


8.

Touch Pad/ Screen


9.

Light Pen


10.

Bar Code Reader


11.

Microphone


12.

Graphics Tablets


13.

Magnetic Ink Character Reader (Used in Bank)


14.

Optical Mark Reader (Used for Answer- Sheet Marking Purpose)


15.

Magnetic Card Reader (Used in Shops, Colleges, Stations etc)



16

Biometric Devices


17.

Bluetooth



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