Comp sci key theory

examples of Embedded system

internet router, washing machine, calculator, GPS Pacemaker, Alarm

characteristics of Embedded systems

perform specific functions or tasks. Low cost compered to computing systems

advantages of embedded systems compared to computing systems

Portability cheaper less complex to use.

embedded systems on mobile devices

camera microphone sstep counter

principles of design

diversity. should be able to be used by a broad spectrum simple to use.

markets embedded systems can impact

Healthcare, education etc.

Main stages in software development

investigate plan design create evaluate document.

document stage

reflect on the process. document the code. instruction manuals/marketing

plan stage

divide the work between the development team , understand the problem

unit test case example

updating profile picture. sending messages image sharing

system test case example

can handle all conversations going on with no problems. can handle a realisrtic number of users.

user interface meaning

where humans interact with the software and provide input as computer finds output.

why is a software development lifecycle important

Structured plan helps run a organised process. helps with collaboration between staff

functional testing

If the system reaches its requirements

Non functional testing

How well the system reaches the requirements

design stage

technical part of the project e.g creating a blueprint/layout sketches etc.

waterfall approach

The waterfall approach is more formal and less flexible than the agile approach. cant begin next section until the first step works as intended

agile approach and benefits

a flexible and collaborative approach to software projects. frequent communication between employees.

transistor

type of electronic switc. semiconductor used to amplify or switch electronic signals

intergrated circuit.

a electronic device that combines electronic components liketransistors, resistors, and capacitors, into one chip