Automatic Input Devices

Question 1

What is an automatic input devices

Answer 1

An automatic input device is a piece of hardware that allows data to be transferred from the outside world into the computer.

Automated input devices can input data automatically without any need for human intervention…

Question 2

Examples of automatic input devices

Answer 2

•Optical Mark Recognition (OMR)
•Optical Character Recognition (OCR)
•Magnetic Ink Character Recognition (MICR
•Bar Code Readers
•Magnetic Stripe
• Light Pen
•Sensors,

Question 3

What are sensors

Answer 3

Sensors are devices that detect and measure physical properties or changes in their environment,

Question 4

Pros of barcode readers

Answer 4

Advantages
• a fast method of data entry
• eliminates possible human error

Question 5

Cons of barcode readers

Answer 5

Disadvantages
• scratched or crumpled barcodes may cause problems

Question 6

Describe magnetic stripes

Answer 6

Magnetic stripes are built into many plastic cards such as debit or credit cards and personal identity cards.
The magnetic strip on the back of the card can hold the personal details of the card owner and, with the necessary PIN, will allow access to secure information, eg bank account details.
• Data stored on the strip is scanned and input into a computer system by a magnetic stripe reader.

Question 7

Describe MICR

Answer 7

Magnetic ink characters appear at the bottom of cheques.
• Banks use MICR to read the numbers from the bottom of cheques to obtain data such as account numbers and bank sort codes.

Question 8

Pros of MICR

Answer 8

• Advantages :
- Documents are difficult to forge.
- Documents can still be read after being written on, folded, spilt on etc…

Question 9

Cons MICR

Answer 9

• Disadvantages:
- M.I.C.R. readers and encoders are expensive.
- The system can only accept a few characters.

Question 10

Describe OMR

Answer 10

An OMR reads marks made by pencil on a printed form into the computer.
• OMR is a system of reading lines or marks which have been made inexactly the right positions on a document (School registers).
• uses light to detect the position of black marks on white paper.

Question 11

Describe OCR

Answer 11

It is a technology that recognizes text within a digital image.

Question 12

Pros of OCR

Answer 12

OCR is faster than typing

Question 13

Cons of OCR

Answer 13

—You need to buy a scanner and OCR software.
- It is not completely accurate, and text would need proof-reading afterwards.

Question 14

Describe MIDI

Answer 14

MIDI (musical instrument digital interface)
• is used for the input of signals from an electronic instrument such as a keyboard to a computer for processing.

Question 15

Pros of POS

Answer 15

• better customer service,
• easier team management,
• increases sales
• reduced waiting time,
• faster scanning of items,
• quicker payments,
• Saves lots of time

Question 16

Cons of POS

Answer 16

• Network issues.
• Customer’s information is at risk.
• Fraudulent machines.
• Increase in crime rate.
• Expensive web-based fees.
• Delay in the reversal of money.
• High cost of service.

Question 17

What is a financial transaction system

Answer 17

A financial transaction terminal is designed
- to receive both smart cards and debit cards

Question 18

What is a machine vision system

Answer 18

A machine vision system (MVS) is a type of technology that enables a computing device to inspect, evaluate and identify still or moving images.

Question 19

Types of machine vision system

Answer 19

1D Vision Systems, 2D Vision Systems, Line Scan or Area Scans and 3D Vision Systems.

Question 20

Where is Mvs used in?

Answer 20

• visual inspection,
• process control,
• part handling and assembly.

Question 21

Important examples

Answer 21

• the automatic assembly of car tyres,
• identification of rear axles for spray painting by robots,
• welding process control and
• the pattern correct sewing of textiles.

Question 22

Pros of mvs

Answer 22

• saving time;
• reducing production costs;
• improving productivity and product quality;
• reducing the labor intensity of testing and inspection personnel;
• reducing the number of unqualified products;

Question 23

Cons of mvs

Answer 23

it is difficult for the machine vision system to extract features from the data;
• Expensive to install
• Much training required to operate it

Question 24

What’s a biometric device

Answer 24

• A biometric device is based on a technology that can identify a person using their unique facial characteristics, fingerprints, signatures, DNA, or iris pattern.

Question 25

Bio devices example

Answer 25

Optical sensors
• Capacitive scanners
• Ultrasonic sensors
• Thermal line sensors
• Biometric Authentication Devices’
• Biometric Identification Devices

Question 26

Describe ATM

Answer 26

An ATM is essentially a computer terminal where you can check your account balance, deposit or withdraw cash and access other financial services.
• It is online and realtime

Question 27

Describe ATM

Answer 27

An ATM is essentially a computer terminal where you can check your account balance, deposit or withdraw cash and access other financial services.
• It is online and realtime