Tools For Collecting

By Cameron Wasilewsky

Home

• Input Devices For Numeric• Input Devices For Graphics• Input Devices For Audio• Input Devices For Video• Data Capture Devices

End Show

Input Devices for Numeric• Numeric Keypad• Barcode Readers• Magnetic Strip• Smart Cards• OMR• MICR

Numeric Keypad• The small, palm size keypad usually on the

right hand side of a keyboard, it consists of digits 0-9 and mathematical symbols

• It uses a grid of wires, that disconnect, reconnect to send a binary signal to the computer

• This is the deciphered by the computer and the digit is seen on screen

Barcode Readers• A barcode reader consists of a

light source, lens and light sensor which translates optical impulses into electrical ones

• It analyses the barcodes image and sends the content to the scanner’s output source

Magnetic Strip• Black strip on a card, i.e credit card• Capable of storing data• It works by modifying the magnetism

of tiny iron based magnetic, particles on a band or magnetic material.

• This is then read by a device plugged into a computer

Smart Cards• A integrated circuit card, pocket

sized card with embedded integrated circuits which can process data

• Stores data in digital form, this is then read by a reader plugged into a computer.

OMR• Optical Mark Recognition• Is the process of capturing human-

marked data from document forms such as surveys and tests

MICR• Magnetic Ink Character recognition• Is character recognition technology

adopted mainly by the banking industry to facilitate the processing of cheques.

• Magnetic Printer, magnetizing characters so that they can be read be digital readers.

Input Devices for Graphics• Scanner• Digital Camera• Graphics Tablet• Video Frame Grabber• Electronic Whiteboard• FAX

Scanner• Input device that translates human-

readable or microform images to bitmapped machine-readable data

• Optically scans images, printed text, hand writing, or an object and converts it to a digital images

Digital Camera• A camera that stores still or

moving pictures in a digital form• A camera tat encodes an image

digitally and store it for later reproduction

Graphics Tablet• Computer input device that

allows on to hand-draw images and graphics, similar to the way one draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures.

Video Frame Grabber

• An electronic device that captures individual, digital still frames from an analog video signal or a digital video stream.

Electronic Whiteboard• Interactive technology for white

boards• There are three types:

– Resistive Membrane– Electro-magnetic– Laser Scanners

• Takes the input translates it to a digital form through the computer and its software

FAX

• Used to transfer copies of documents of phone wires

• Consists of image scanner, modem and printer

Input Devices for Audio

• Microphone• Direct from amplifier or sound sy

stem• Need for sound card

Microphone• An acoustic to electron

transducer or sensor that converts sound into an electrical signal

• Takes sound converts it to ones and twos so the computer can use it

Direct from amplifier or Sound System

Need for Sound Card

Input devices for Video

• Digital Video Camera• Firewire Cable• Webcam

Digital Video Camera

Firewire Cable

Webcam

Data Capture Devices

• Biometrics• Sensors

Biometrics

Sensors