first lesson

What is a computer system?

A computer system is a group of parts that work together to achieve the same goal.
All computer systems have one or more inputs, processes and one or more outputs.

Reliability 

Reliability is where it won't make and error and will always achieve the goal it was intended, so in a game, you gun will always fire in front of you when you fire.

Reliability is important because we heavily rely on computer systems, if a bank one glitches up then you might be left having no money/ a boat navigation system glitches you could crash into rocks / go opposite direction to where you want to go.

Even in the most reliable systems, like space craft, the system could still glitch, that is why there is no such thing as a 100 percent reliable system.

Input, process and output

Input- the information given to the system for example: you pressed left key

process- information is processed using programming and sometimes using information from the
program you are in.

Output- some kind of effect happens, say the gun fires at the zombie

Embedded system

An embedded system is a system designed to carry out a specific set of functions, and is inside the product, for example, it tells the washing machine will always have to clean the clothes depending on what type and how many, whereas a phone has to be flexible so it can react to new functions so it can make a person in this app move forwards when you press the forward key.

Regulations

Regulation exist to protect your information, to protect you from having your identity stolen, to stop people spending all your money. THE DATA PROTECTION ACT says: that your data must be up to date; be kept securely (especially if it goes to another country); be kept only for the time that is needed; be used for a particular lawful reason and be accurate.

several other Acts have been made to keep up with the ever changing technology and the regulations they need. The Computer Misuse Act was made to stop people hacking/ using someone's computer or material without permission or giving it a virus.

Also, some Acts like the copyright one, were made originally for a different purpose but include computers now. Under this Act, you cant copy and sell other people's copyrighted stuff, without their permission.