In terms of ICT, data is simply any numbers, letters or symbols that can
be entered into a computer system.
Information is data that has a context and
so it has a meaning.
A system has three stages: input, process and output.
A computer is a device that stores and processes
information according to a set of instructions.
Hardware is the physical parts of the
computer system – the parts that you
can touch and see.
Software is a collection of instructions that can be
‘run’ on a computer. These instructions tell the
computer what to do.
Computer hardware is the physical components that make
up the computer system. Hardware is useless without
software to run on it. Software is instructions that tell
computer hardware what to do. Software is useless unless
there is hardware to run it on.
The CPU is the 'brain' of the computer. It is the
device that carries out software instructions.
Random Access Memory (RAM) is the part of the computer
that temporarily stores the instructions that the computer is
running, and the data it is processing.
Peripheral devices are usually categorised into
input devices, output devices andstorage devices.
Input devices are devices that pass data into the
computer are known as input devices.
Output devices are devices that take data from the
computer are known as output devices.
An operating system is a special piece of software that
manages the general operation of a computer system
The system that people use to interact with
a computer The system that people use to
interact with a computer.
A GUI is an interface built around visual (graphical) things
A command-line interface is a means of interacting with a computer
program where the user (or client) issues commands to the program
in the form of successive lines of text (command lines).