Automatic Input Devices Flashcards
What is an automatic input devices
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…
Examples of automatic input devices
•Optical Mark Recognition (OMR)
•Optical Character Recognition (OCR)
•Magnetic Ink Character Recognition (MICR
•Bar Code Readers
•Magnetic Stripe
• Light Pen
•Sensors,
What are sensors
Sensors are devices that detect and measure physical properties or changes in their environment,
Pros of barcode readers
Advantages
• a fast method of data entry
• eliminates possible human error
Cons of barcode readers
Disadvantages
• scratched or crumpled barcodes may cause problems
Describe magnetic stripes
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.
Describe MICR
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.
Pros of MICR
• Advantages :
- Documents are difficult to forge.
- Documents can still be read after being written on, folded, spilt on etc…
Cons MICR
• Disadvantages:
- M.I.C.R. readers and encoders are expensive.
- The system can only accept a few characters.
Describe OMR
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.
Describe OCR
It is a technology that recognizes text within a digital image.
Pros of OCR
OCR is faster than typing
Cons of OCR
—You need to buy a scanner and OCR software.
- It is not completely accurate, and text would need proof-reading afterwards.
Describe MIDI
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.
Pros of POS
- better customer service,
- easier team management,
- increases sales
- reduced waiting time,
- faster scanning of items,
- quicker payments,
- Saves lots of time
Cons of POS
- 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.
What is a financial transaction system
A financial transaction terminal is designed
- to receive both smart cards and debit cards
What is a machine vision system
A machine vision system (MVS) is a type of technology that enables a computing device to inspect, evaluate and identify still or moving images.
Types of machine vision system
1D Vision Systems, 2D Vision Systems, Line Scan or Area Scans and 3D Vision Systems.
Where is Mvs used in?
- visual inspection,
- process control,
- part handling and assembly.
Important examples
- 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.
Pros of mvs
- 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;
Cons of mvs
it is difficult for the machine vision system to extract features from the data;
• Expensive to install
• Much training required to operate it
What’s a biometric device
• A biometric device is based on a technology that can identify a person using their unique facial characteristics, fingerprints, signatures, DNA, or iris pattern.
Bio devices example
Optical sensors
• Capacitive scanners
• Ultrasonic sensors
• Thermal line sensors
• Biometric Authentication Devices’
• Biometric Identification Devices
Describe ATM
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
Describe ATM
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
