Showing posts with label keyboard. Show all posts
Showing posts with label keyboard. Show all posts

Sunday, 9 March 2014

human data entry devices

"Human Data Entry Devices"

Input devices that require data to be entered manually to the computer are identified as human data entry devices. The data may be entered by typing or keying in, or by pointing a device to a particular location.

 Keyboard:

Features Keyboard is a common input device. It is provided along with the computer, and is easy to use. It is used for entering the text data. For inputting the data, the user types the data using the keyboard. When the data is being typed, the display monitor displays the typed data. Cursor is a vertical line, an underscore, blinking line, etc. Cursor moves with each typed character. The position of cursor indicates the location on monitor where the typed-in character will be displayed. 

Sunday, 2 March 2014

input (computer hardware)

Computer hardware: INPUT: An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system (such as a computer) keyboard-a device to input text and characters by depressing buttons QWERTY layout. Pointing devices: mouse, optical mouse (uses lasers, LEDs to track the surface under the mouse to determine motion of the mouse), trackball Gaming devices: joystick, gamepad, game controller Image/video devices: image, scanner, webcam, barcode reader, OCR(optical character recognization), the mechanical or electronic translation of images of handwritten, typewritten or printed text into machine -editable text), OMR (optical mark recognition the process of capturing human-marked data from document forms such as surveys and test ), MICR (magnetic ink character recognition, a technologg used in banking to facilitate the processing of cheques.it allows computer  , microphone, s to read information (such as account numbers) off of printed documents. Unlike barcodes, MICR (magnetic resonance imaging is primarily a medical imaging technique used in radiology to visualize the internal structure and function of the body) Audio input devices: microphone - an acoustic sensor that provides input by converting sound into electrical signals.