WELCOMEComputer Hardware

(Input Device)

Computer Applications in BusinessCourse Code – MIS 1111

Section – 1 (A)Presentation SessionDecember 20, 2016 N

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Computer Hardware The physical equipment & components which

enable computer software to run in the computer system is called computer hardware.

Hardware is one that is tangible.

It is the collection of physical elements that constitute a computer system.

Computer hardware refers to the physical parts or components of a computer.

Computer Hardware includes Keyboard Mouse Joysticks MICR OCR OMR Light Pen

These are the examples of Input device. It is device which accepts instructions and data in a form understandable to human beings, converts it into machine readable form and transmit to the memory unit of the computer.

KeyboardA type of input device operated by depressing alphanumeric keys.

A keyboard is a type writer style device which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches.

A standard keyboard has 100 keys, each key sends different signals to the CPU. Standard Keyboard Layout has 100 keys arranged in five groups

There are 6 different keys in Keyboard. They are –1. Alphanumeric Keys 4. Function Keys 2. Modifier Keys 5. Cursor - Management Keys 3. Numeric Keypad 6. Special Purpose Key

MouseA mouse is an input device that one can move around on a flat surface (usually on a desk or keyboard tray) and controls the pointer (also called a mouse pointer)

How to use mouse: Clicking Double – Clicking Dragging Right – Clicking

There are two types of mouse. They are – 1. Mechanical 2. Non - Mechanical

JoysticksA joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling.

Joystick, also known as the control column.

Joysticks are often used to control video games, and usually have one or more push – buttons whose state can also be read by the computer.

A popular variation of the joystick used on modern video game consoles is the analog stick.

OCR, OMR and MICR OCR Software (Optical Character Recognition) is

the mechanical or electronic conversion of scanned images of handwritten, typewritten or printed text into machine – encoded text.

OMR Software (Optical Mark Recognition) is the process of capturing human – marked data from document forms such as surveys and tests.

MICR (Magnetic Ink Character Reader) is a character recognition technology used primarily by the banking industry to facilitate the processing and clearance of cheques and other documents.

Light PenA light pen is a computer input device in the form of a light – sensitive wand used in conjunction with a computer’s CRT (Cathode Ray Tube) display.

It allows the user to point to displayed objects or draw on the screen in a similar way to a touch screen but with greater positional accuracy.

Thank You