Input and Input and Output Devices Output Devices & & New New TechnologiesTechnologies

2.1- Input devices and 2.1- Input devices and there usesthere uses1. An input device transfers data from the outside

world into a computer.

2. There are two different categories of input device. They are :

Manual input devices: User must enter data into the computer by hand.

Direct Data Entry (DDE) Devices : Transfers information automatically from a source document such as a form or barcode into the computer.

 3. Important criteria for comparing input devices are : suitability to application, input speed, cost and reliability. 4. There are many different input devices available. The key features of each input device are outlined in the table below.

Manual inputManual input

Direct InputDirect Input

Radio Frequency Radio Frequency Identification Identification What is it?

Is an abbreviation for Radio Frequency Identification.

This is a term used to describe a type of wireless technology used to identify objects, animals (or people)

RFID systems can be used just about anywhere:

from clothing Missilespet tagsfood anywhere that a unique identification system

is needed. The tag can carry information as simple as a pet owners name and address to as complex as instructions on how to assemble a car.

Some auto manufacturers use RFID systems to:

move cars through an assembly line. At each successive stage of production,

the RFID tag tells the computers what the next step of automated assembly is.

1. Businesses that want to keep track of their stock as it moves from one place to another.For example, many parcel delivery companies now offer the ability for you to check where your parcel is as it is being delivered. They can do this by attaching an RFID tag on the parcel, then a reader at each main point of its journey keeps track of its progress.

2. Security systems that can sense the identity of the person wanting access to a restricted area.The person wears an RFID tag, so when they approach a reader, it can request an identity check without the person having to do anything.

Who uses it?Who uses it?

3. Anti-theft Many shops use RFID to deter shop-lifting. Have you noticed some shops have some tall objects standing either side of the doors? You have to walk between them in order to leave the shop. This is part of an RFID system. Many of the more expensive items in the shop will have hidden RFID tags. If you try and walk out of the shop, the Readers either side will request the tag for its code - that code is checked against a database to see if it has been paid for yet. If not, the alarm sounds. Another reader is located beneath the desk by the till. As you pay, they slide the object over the reader to register it is as having been been paid for.

4. Passports.Many countries, including the UK now use RFID tags inside passports. The tag not only identifies the person, but also stores a digital photograph and a record of their movement in and out of the country. In order to reduce the chance of someone 'skimming' that information, the passport contains a metal film to prevent them being read when closed.

Images of different types of Images of different types of RFID tags RFID tags

Examples of Output Examples of Output devicesdevices

3D printers3D printers3D printing or additive

manufacturing is a process of making three dimensional solid objects from a digital file. The creation of a 3D printedobject is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created.

Images of 3d printersImages of 3d printers

What is Monitor LEDWhat is Monitor LEDLight-Emitting Diode

(LED) Monitors. Light-emitting diode (LED) computer monitors do not use cold-cathode technology and fluorescent technology. Instead, light diodes illuminate the screen in one of two different ways, or a combination of both.

Images of Monitor LEDImages of Monitor LED

New TechnologiesNew Technologies

Definition:New technologies are those that are currently being developed or will be developed in the next 5 to 10 years, and which will alter the business and social environment.

The technologies include;The technologies include;Artificial IntelligenceBiometricsRoboticsQuantum CryptographyComputer assisted translation3D and holographic imagingVirtual reality

Artificial Intelligence (AArtificial Intelligence (AI)I)This is a computer

science that is focused on creating computer systems that simulate human intelligence. 

Impacts of AI on everyday life:

Accurate prediction of weather

Increased leisure time Safe Transport-driverless

trains, cars that self park Improved medical care-

robotic surgery assistants

BIOMETRICSBIOMETRICSBiometrics is where parts

of a person's body are used for identification purposes. 

Impacts of Biometrics on everyday life:

Better airport security

Increased building security

Reduced car theftFace recognition

software can recognize people.

More secure mobile phones

Quantum CryptographyQuantum CryptographyQuantum cryptography

(encryption) is an emerging technology that allows messages and data to be sent with complete privacy. 

Impacts of Quantum Encryption on everyday life:

Completely secure voting

Completely secure communication

Completely secure bank transfers

Computer Assisted TranslComputer Assisted Translation (CAT)ation (CAT)

Impacts of Computer Aided Translation on everyday life:

More accurate documents

A more multilingual society-language translators

Quicker and more efficient translations

3D and Holographic 3D and Holographic Imaging (aka holograms)Imaging (aka holograms)

Def: This is a technique where images are made to appear three-dimensional and to actually have depth.

Impacts of 3D Imaging on everyday life:

Improved security Better movie experiences Greater data storage

Virtual RealityVirtual RealityVirtual reality is where computers

are used to create an artificial environment that users can interact with as if it were real.

Impacts of Virtual Reality on everyday life: Improved medical surgeons Larger and stronger buildings Training in dangerous situations More realistic education- More effective treatment of phobias

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