Input Devices

Input device – Hardware part

Work  -Provide the data to Computer

Input Device Types-

 1. Text Based input Device

Keyboard

 2. Pointing Devices / cursor control input Devices

Mouse

Joystick

Track ball

Track Point

Touched pad

Stylus

Light pen

Touch Pen

 3. Scanning input Devices

Scanner

Digitizer

MICR

OMR

OCR

BCR

QR (Quick Response reader)

 4. Other input Devices

Virtual reality (Video Game)

Digitizer

Biometric

Web Camera

Micro phone (Mic)- Speech recognition device

Data Glove

Midi Devices (Musical Instrument Digital interface)

1. Keyboard Input Device

Keys  101 to 108

Founder Cristopher

Type Based on text input

Types of keyboard Keys-

Alphabet Key (A-Z, 26)

Numeric Key (0-9, 10)

Function Key (F1- F12, 12)

Special Key (~`!@#$%^&*()_=?><)

Character / Symbolic Key (+,-,*, /)

Navigation / Arrow Key (4)

Types of keyboard Keys Based on working nature-

Toggle Key (ON/OFF)

Caps lock

Num Lock

Scroll Lock

Space bar

Combination Key

Control (Ctrl)

Shift

Alternate (Alt)

Working of specific key-

ESC- Escape key- Interrupt the work

Enter- Data Process / Submit / line break / Return

Window – Start Menu

Tab- half inch space in a file, Go to next tab

Control –Control ke

Shift –Shift key

Space bar- break word

Prtsc- To print screen

Delete-Delete remove data

Home-Go to main page

End-Go to end of page

PgUp-Page scroll up

PgDn-Page scroll down

Working of Specific key-

F1-Help

F2-Rename

F3-Search

F4-Redo

F5-Refresh- DRAM, MS-Word-go to, PPT- Slide Show

F6-

F7-

F8-

F9-

F10-

F11-

F12-

2. Mouse- Pointing Devices / cursor control input Devices

Work- Selection of the option

Type of Mouse-

Mechanical Mouse

Optical Mouse

Wireless / Bluetooth mouse

3. Scanner-Scaning input device

Work-

To scans a printed data and save into computer

Provide output by Change a Hard copy into a soft copy

Unit of picture quality measurement – dpi (dot per inch)

MICR-Magnetic Ink Character Recognition

Work- To identify a Printed MICR code on chaque in banking

BAR / BCR – Bar code reader / Optical Barcode Reader

Work – Read a product information like price in a shop / shopping MOL

Offline and online billing system

OCR – Optical Character Recognition

Input an optical character into digital format

Biometric – Online Verification

Scans Finger print / eye

QR – Quick Response reader

Digitizer / Graphic Tablet-

Input handwritten notes into digital form in computer

Use- CAD- Computer added Design, online Education