Topic 4 - Computer Systems

Which components in a computer carry out the logic operations?

transistors

How is an AND Gate represented?

A.B

How is an OR gate represented?

A+B

How is an XOR gate represented?

AO+B

How is a NOT gate represented?

A with line over it

What is hardware?

the physical components that make up a computer system

What's software?

the non-physical programs that are stored by and run on a computer system

Name a special type of computer software

Operating system

Name an example of an operating system

Microsoft Windows

What's system software?

the software that provides a platform for other software to work

Examples of software systems

operating systems, utility programs

What does an operating system do?

they manage computer hardware, users and the resources used by software

What are programs run by?

one or more processors

Processors can have a number of…

cores

What's a core?

another processor

What is the operating system responsible for?

for deciding which program will run on the processor and how much time it will get to run

What's multi-tasking?