ICT - Bare Minimum

What is ICT?

using physical devices and software programmes to achieve an outcome

Hardware

physical components that make up electronics

CPU

central processing unit, processes inputs, stores data and sends outputs

Memory

stores the instructions of the program currently being executed by the computer

RAM

random access memory is volatile memory that temporarily stores programmes and data

ROM

read only memory is permanent memory which contains non-volatile information written into it during production that cannot be changed by a user

Motherboard

holds all the circuits for a device and allows communication between components

Graphics card

generates graphics/visuals for the deviceHard

HDD

hard disk drive stores both permanent and temporary data using a magnetic storage device

SSD

solid state drive stores flash memory

What is flash memory?

non-volatile memory that stores programmes and data

Compare HDD and SSD

HDD

• cheaper

• slower

• more storage

• more likely to break due to moving parts

SSD

• smaller

• faster

• more efficient

• quieter due to no moving parts

Advantage + Disadvantages of touchscreen to manual buttons

Advantages

• easy to use

• saves space

• easier to clean

• aesthetically pleasing

Disadvantage

• can break easily, smash, crack

• expensive

• harder to repair

Compare USB A and USB C

USB A

• slower connection

• smaller output

• non-reversible connection

• bigger

USB C

• faster connection

• larger output

• reversible connection

• smaller

Router

generates wifi to connect to the internet

Repeater

boosts a wifi signal from the original router

Software

a set of instructions given to a computer so it can carry out work

Bluetooth

a wireless connection that allows for small data transfers over a short distance

What are some uses of bluetooth?

• pair devices

• control devces

• transfer data

• tethering/share wifi via a hotspot

Wifi

a wireless connection that gives access to the internet

What are the disadvantages of using public wifi?

• slower speeds due to increased users

• more susceptible to hacking and viruses

Phishing

attempting to gain sensitive information by pretending to be a reputable organisation

Malware

tricks user into downloading viruses

Unpatched software

problems that occur or as software is used

How to minimise problems with ICT?

• use a VPN

• change passwards regularly

• never enter card details into unofficial sites

• beware of download links

• rollout regular patches

• change privacy settings

QR Code

quick response code designed to store and quickly retrieve information

GPS

global positioning system uses satellite signals to determine location on a map

LIDAR

light detection and ranging uses laser pulses to scan an area and locate objects

Cellular data connectivity

ability of a device to connect to the internet

Applications of drone technology

• surveilleance

• mapping large areas

• photography

• deliveries