BTEC ICT Unit 1: The Online World Flashcards

what is a digital device?

An electronic device that uses digital data

Different types of digital devices?

Multifunctional devices

Personal computers

Mobile devices

servers

entertainment systems

digital cameras

navigation systems

communication devices/systems

Data capture/ collection

What is a multifunctional device?

Devices that can perform multiple functions, such as inputting and outputting data.

example is a touch screen (output data and input by the using touching the screen

What is a Personal Computer?

small and cheaper computers for use by a single user.

example is a desktop or laptop

What is a mobile device?

Portable digital devices

example: tablet/smartphone

What is a server?

Powerful computers that provide services to computers connected to the network

example- mail server that provides email services for all on the network

what is a entertainment system?

Devices for watching tv/ films , listening to music or playing video games

What is a digital camera?

capture images and videos digitally and store them as digital data

What is a navigation system?

Use gps (satellites) to locate the users position and give them directions

example: satnav

what is a communication device?

Devices that can send and receive digital data from each other

example: router

What is a data capture/collection system?

devices that collect and input data through automated systems

example: a barcode scanner

Different uses of digital devices?

Education/training

personal

social

creative

organisation

retail

Use of digital devices in education?

Interactive whiteboard- make lessons more interactive

online courses- everyone can learn from anywhere

computers(laptops used)- can be more independent

Use of digital devices in personal use?

Playing video games

watching TV

operating home systems

Use of digital devices in social use?

Social networking- can constantly keep in contact

instant messaging

use of digital devices in retail?

Online shopping

stock checking

Use of digital devices in organisation/ business ?

producing/ sharing different documents

managing accounts

video conferences

Use of digital devices for creativity?

editing photos

computer aided design (CAD)

What is a peripheral device?

Hardware devices that are not essential to the running of the computer but can be connected to allow the system to provide different functions

What are the 4 main types of peripherals?

input

output

storage

accessibility

What is an input device?

Device that inputs data into the computer

for example- keyboard, mouse,microphone

What is an output device?

Anything that can show the result of processed data

eg monitor, speakers, headphones

What is an accessibility device?

Allow people with disabilities to easily use computers.

eg eye motion sensor, ergonomic keyboard

What is a storage device?

Peripheral device used for storing, backing up and sharing data.

eg Hard disk, Sd card, usb stick

What is manual processing?

Data input/ processing done by a human

eg entering survey responses

What is Automatic processing?

Processing done by a piece of software with very little human supervision

eg smart meters

what is a hard disk and What are the positives and negatives of Hard disks?

magnetic storage devices used as primary and external stoarge

positives:

large storage

low cost

reliable

slower than ssds at loading data

external hard drives not as portable

What is a sd card and what are the positives and negatives?

small flash memory cards that are commonly used for storage in cameras

positives:

small and portable

easy to transfer between devices

small storage capacity (around 64gb)

what is a usb stick and what are the positives and negatives?

small flash memory devices that connect in a usb port

positives:

extremely portable

compatible with most computer systems

storage low compared to hard drives

what is an operating system?

System that coordinates all the operations of the computer.

What is a real time operating system?

Inputs are processed and responded to instantaneously.

What is a single user single task system?

One user can use the system at a time with one application being run at a time.

(fewer resources needed and can be used with devices with limited processing)

What is a single user multitasking operating system?

One user can use the system at a time but can run multiple applications.

What is a multi-user system?

Many users can use the system at the same time using many applications.

How does an operating system manage Networking?

simplifys networking in a computer with device drivers for the network interface.

How does the operating system manage security?

Features are built in including:

user authentication

antivirus

firewall

How does the operating system manage memory?

decides what to allocate memory to, how much to allocate to each process, how to unallocate memory.

How does the operating system allow multitasking?

It allocates the cpu and memory to each application to allow them all to run

what are the different user interfaces?

command line

graphical user interface

menu- based

What is a command line interface?

positives and negatives?

interface requires the user to type in the commands

positives: experienced users find it easier to use

less memory and processing power

negative:

requires knowledge of commands

learning can be hard

What is graphical user interface?

positives and negatives?

interact with the screen using touch screen/a pointer to select icons (widely used).

positives:

simple method which is easy to learn

don't need to learn commands

have accessibility options

negatives:

needs lots of memory/ processing power

What is menu based interface?

positives and negatives?

interact using a simple menu (eg an atm)

positives:

limited options so easy to use

can be adapted for needs

tasks can be slow

What is utility software

Used to manage system resources and optimise the computer system.

Different types of disk utilities?

designed to maintain the performance of the disk drive

file compressors- compresses files for later use (can be decompressed)

backup- automatically backs up data

types of network utilities?

designed to maintain good network traffic and keep them secure.

firewalls-can monitor and block suspicious traffic

antivirus- prevents computers from getting viruses and removes viruses on the system.

What is application software?

Allows end users to complete a task

What is an emerging technology?

Technologies that are currently in development

What are different limiting factors on emerging technologies?

software- may not be able to perform what they want it to

hardware- may not have enough processing power

Examples of emerging technologies at home

automated vacuum cleaners

VR-

domestic robots- carry out chores

Examples of emerging technologies at work?

Robots- manufacturing uses

VR- allows for virtual meetings (microsoft mesh)

Biometrics- more security (fingerprint recognition)

What is an early adopter?

someone who starts using emerging technology before most people

Implications of emerging technology for personal use?

make life easier- more time (washing machines)

makes it easier to connect/ socialise- social media

Implication of emerging technology for businesses?

can make business operations easier

may need to be researched- will cost them money.

What does a file type do?

Denotes the form or structure of the data stored in the file

examples of image file types?

GIF- small file size, compressed and low quality

JPG- compressed but high quality (lossy so cant be uncompressed)

BMP- uncompressed, high image quality

examples of video file formats?

mp4- high quality, compressed and used for streaming and can be used on many devices

AVI- high quality video streaming, large file size and not compressed.

Examples of application software formats?

PPT- powerpoint

DOC- word document

How do different features affect an ICT system?

If some of the features (hardware, software, peripherals) don't work together, they will bring down the effectiveness and uses of an ict system

Factors affecting the choice of an ICT system?

User experience/ needs

User needs

compatibility

connectivity

specifications

cost

Efficiency

Productivity

Implementation

Security

How does user experience affect the choice of an ict system?

How do they find the system when they are using it

what do they need to have to make it easier to use (training, different hardware/ software/ peripherals)

How do user needs affect the choice of an ICT system?

What do they need it for (gaming- better graphics, business- higher processing power)

do they need accessibility features

How do specifications affect the choice of an ICT system?

they will need it to have certain features to fulfill its purpose (may need more processing power, more ram, better software etc)

How does compatibility affect the choice of an ICT system?

The system will need to work on most devices and will need to be tested

How does connectivity affect the choice of an ICT system?

They will need it to be able to connect to wireless and wired connections (HDMI, bluetooth options, wireless internet, Ethernet)

How does cost affect the choice of an ict system?

They will need to keep within a budget of purchasing and maintaining the system

How does efficiency affect the choice of an ICT system?

They will want it to be able to be fast and run smoothly to increase the speed at which you can do things on

How does productivity affect the choice of an ict system?

They will want it to carry out small operations in as little time as possible

How does the implementation affect the choice of an ict system?

It will need little down time as they may lose money due to it being down and it may need to be tested before on a small sample to get rid of any bugs.

Data migration may take a long time

How does the security affect the choice of an ict system?

It may need to be secure due to handling sensitive customer information. They will need this as they could get a lawsuit