Information Technology - Unit 1 Technological Systems

Created by

Logan Kiely

Cards (377)

Digital devices  
A digital device is an electronic device that uses digital data (such as IS, Os) as opposed to analogue data such as a sound wave.
Multifunctional devices 
These devices can perform multiple functions, such as inputting and outputting data.
Examples of Multifunctional Devices
Multifunctional printers, touchscreens and force-feedback game controllers
Advantages of Multifunctional Devices
Compact design
Reduced operating costs
Consolidated supplies and maintenance
Greatly reduce the need of having numerous devices in a home or a office
Disadvantages of multifunctional devices
A single problem can affect the whole device
Lack of quality of performance
May not offer all of the features of a singular functional device
Personal Computers (PC) 
These are small and inexpensive computers for use by individual users.
Examples of Personal Computer (PC) 
Microcomputer, desktop computer, laptop computer and tablets
Advantages of a Personal Computer (PC)
Increase your productivity
Connects you to the Internet
Can store vast amounts of information and reduce waste
Helps sort, organize and search through information
Get a better understanding of data
Keeps you connected
Disadvantages of a Personal Computer (PC)
Carpal tunnel and eye strain
Short attention span and too much multitasking
Can limit learning dependency
Too much sitting
Potential loss of privacy
Time sink and lots of distractions etc.
Mobile Devices 
Smartphones and tablets are made with portability in mind to give people computer and internet access on the go.
Examples of Mobile Devices 
Smartphones, Tablet, Laptop computers, Smart watches, E-readers and Handheld gaming consoles
Servers 
Powerful computers that provide data to other computers connected to a network either on a local area network (LAN) or a wide area network (WAN).
Example of servers
Filer servers, Print servers and Database servers
Advantages of Servers
Gives scalability
Adds seamless connectivity
Improves Collaboration
Allows for faster expansion
Allows centralized and automated backup systems
Disadvantages of Servers
Increased costs
Single point of failure
Transition
Quality of support
Entertainment systems 
Devices which are used for a variety of purposes such as for watching TV/Films, listening to music and playing video games.
Examples of Entertainment Systems 
Home theater system, Home theater PC, Video game consoles, In-car entertainment and In-flight entertainment
What are Digital Cameras 
These capture images and videos digitally using an image sensor and store them as digital data on media such as memory card or a hard drive.
Examples of Digital Cameras
compact
bridge
DSLR
Mirrorless
DSLR's and Mirrorless models have interchangeable lenses
What are Navigation Systems
These devices use a GPS (Global Positioning Satellite) receiver to locate the user's position on a digital map and provide directions to a given destination.
Examples of Navigation Systems
Celestial
GPS
Map and Compass
What are communication devices and systems 
These devices can send and receive analogue or digital data to and from another device.
Examples of communication devices and systems 
Smartphones, laptops, desktops, tablets, gaming consoles, smart TVs and watches or fitness trackers
Data capture and collection systems
These devices collect and input data through automated systems rather than direct data entry.
Examples of data capture and collection systems
Barcode scanner, optical marker scanner and EPOS
Examples uses of digital devices: Education and training
Distance learning degrees
Virtual learning environments (VLEs)
Online e-learning courses
Classroom teaching - interactive whiteboards (WBs)
Example uses of digital devices: Personal
Playing video games
Watching digital devices
Internet banking
Operating home systems
Example uses of digital devices: Social
Instant messaging
Social networking
VOIP calls
Example uses of digital devices: Retail
Online shopping
Recording sales
Stock checking
Data/numerical modelling
Example uses of digital devices: Organizational use
Manufacturing and constructing
Video conferencing
Managing accounts and payroll systems
Producing and sharing business documents
Examples uses of digital devices: Creative
Designing logos
Computer-aided design (CAD)
Editing photos
Producing 3D graphics for games and movies
Input devices with Features and Example uses : Keyboard
Features: Made up of keys used to input alphanumeric characters and symbols.
Example users: Writing a report or Inputting into a database
Input devices with Features and Example uses : Mouse
Features: A pointing device used to select items on a screen
Example uses: Navigating a user interface e.g. by clicking on icons
Input devices with Features and Example uses : Scanner
Features: Converts hard copy text or images into a digital format
Example uses: Inputting a photo for editing in graphics software
Input devices with Features and Example uses : Graphics tablet
Features: Controls the computer by using a stylus on a tablet
Example uses: Creating digital illustrations
Input devices with Features and Example uses : Microphone
Features: Converts analogue signals (sound waves) into electrical signals to be sent to the sound card which converts analogue to digital
Example uses: Talking on VOIP software and Voice recording
Input devices with Features and Example uses : Webcam
Features: Inputs video and still images directly into a computer
Example uses: Video conferencing
Input devices with Features and Example uses : Sensor
Features: Takes and inputs readings from the physical environment, such as changes in temperature
Examples uses: Automated central heating systems and Security systems
Output devices with Features and Example uses : Monitor
Features: Outputs an image to the user, e.g. of the user interface, a photo or a document
Example uses: Viewing the user interface and Watching movies
Output devices with Features and Example uses : Projector 
Features: Outputs an image onto a wall or screen
Example uses: Viewing the user interface and Watching movies