Niraj Tutorials

The barcode reader are used to identify a particular product written bar or strips over that product . The examples are labelling goods, numbering the books, package, .. etc. A barcode reader is an optical scanner that can read decodes the data contained and printed barcodes. There are different types of barcode are the universal product code (UPC), QR code, Aztec code, Code128, Codebar, EAN-8, ......etc. The universal product code consist of nine or more digit computer readable code that are use to labelling the written products. Digital Camera A digital cameras are integrated with a wide rang of mobile phones, digital devices and ranging from PDA (Personal Digital Assistant) to the Hubble and WST (Web Space Telescopes). It is use to input any capture image in to your storage medium and computer. A digital camera uses a...

MICR (Magnetic Ink Character Reader) is a character recognition system. It is an input device. These devices are mainly used in banking, industry to read the bank's code number and cheques number. An MICR can identify character printed on the cheques with a special type of ink that contents particles of magnetic material, it passes through a machine and than translates the magnetic information into characters. An MICR provides a secure, high-speed method of scanning and processing data and information. Card Reader A card reader is a data input device. It is use to transfer data from a card-shaped storage medium to computer. A memory card reader is a input device used for communication with a memory card or a smart card. A magnetic card reader is a device. These device uses to read magnetic stripe card, such as debit cards and credit ...

1.Stick; 2.Base; 3.Trigger; 4.Extra Buttons; 5.Autofire Switch; 6.Throttle; 7.Hat Switch; 8.Suction Cup A joystick is an input device consisting of a stick that mainly used with computer games & some times called a game controller. Joystick typically connect to your computer using a basic USB connection and often come with software that allows you to assign the function of each button. Joystick have stick that can be rotated the left and right or up and down required to move the cursor. Joystick are also used for controlling machines such as underwater unmanned vehicles, trucks, cranes and zero turning radius lawn mowers. OCR (Optical Character Recognition) As OCR stands for Optical Character Recognition, it is a widespread technology to recognize text inside images, such as scanned photos and documents. These technology is used to convert...

Mouse Mouse is a device that controls the movement of curser or pointer on a display screen.       A mouse is a small object, you can scroll along hard flat surface . It's name is derived from its shape. The mouse is important for graphical user can simply point to option click a mouse bottom. Scanner The keyboard can input only text thought keys provided in it. If we want to input a picture the keyboard cannot help us. Scanner is an optical device that can input any graphics chart or picture get it. Light Pen Light pen is a input device that is used hand in hand with the computer monitor it is called a light pen because its action is activated by light. It is important note cannot work with LCD (Liquid Crystal Display) screen, only work with traditional monitor CRT (Cathode Ray Tube).

Keyboard     Keyboard is an input device consisting a set of type writer like keys that enable you to enter data into your computer. It is a typewriter-style device. These are the most common and very popular input device. It help us input data to the computer/desktop. The layout of the keyboards is like that of traditional typewriter. There are 5 pare of a keyboard. Typing Keys Function Keys Control Keys Number Keys Special Purpose Keys Typing Keys The typing keys include the letter keys ( A-Z ) and digit keys ( 0-9 ) which generally give the same layout as typewriters. Function Keys The twelve function keys are present on the keyboard which are arranged in a line at the top ( F1, F2, F3, F4, .. F11, F12 ). ...

Floppy Disk Floppy disk is slower to access than hard disk. Floppy disk has low storage capacity, if the size of file increases than decreases the capacity of floppy disk. Hard Disk A Hard Disk is a storage medium. This drive is made up of a series of circular disk called platters arranged. A Hard Disk drive are made of non-magnetic material. A Hard Disk composed of numerous discs of metered sensitive to magnetic field. It has magnetic technology. Optical Disk An Optical Disk is input and output device. These devices use lesser technology to record data and information. It has a large storage capacity of the Gigabyte (GB). Magnetic Tape Magnetic Tape is a storage medium of secondary memory. They fit up to more than 4GB (Gigabyte). Pen Drive A Pen Drive is a portable memory devices. It is used to solid state memory rather t...