Pages in this set

Page 1

Preview of page 1
Glossary of terms ­ Computing

Basic Definitions
The difference between information and knowledge
Binary and other number systems
Character sets
Software concepts
Validation and verification
Methods of validation
Methods of verification
Operating Systems
Features of an Operating System
User Interfaces
Data Types…

Page 2

Preview of page 2
Types of Applications Software
Common Applications
Types of network
Advantages and disadvantages of the methods of switching
Hardware concepts
Processor Architecture
Automatic data capture


Page 3

Preview of page 3
Basic Definitions


Identify Amplify Exemplify

A raw fact or figure Without meaning, structure or e.g. 22022008


Made up of data With meaning, structure and e.g.
context Data: 22022008
Structure: 22/02/2008
Meaning: Date
Context: This is the date Rambo
came out in UK cinemas

The difference between information…

Page 4

Preview of page 4
Information is processed Knowledge is understanding the
data information


Identify Amplify Exemplify

Things that you can touch The physical components of a A printer
computer system; something
you can hit with an axe


A series of instructions Program code that a computer A word processor
can execute (run)…

Page 5

Preview of page 5
Binary and other number systems

Identify Amplify Exemplify

Binary Base 2
Two-state; 1 or 0;
Boolean; Yes or No;
Digital; On or Off;

Octal Base 8
Relationship to Binary Octal is binary digits in groups of
From the right, adding a leading
0 at the left;
Converting each group…

Page 6

Preview of page 6
Character sets
Identify Amplify Exemplify

Character set The individual characters that a
computer can distinguish;
Each character is assigned a
Binary code;
The number of bits necessary to
code each character is a byte / 2
ASCII code;

The number of characters in the
character set must be…

Page 7

Preview of page 7
Software concepts

Generic: Off-the-shelf; software that is mass-produced to cater for a number of
different types of user. Generally not customisable and is relatively cheap to

Support can be widespread and freely available.

Can be deployed immediately after purchase.

Bespoke: Custom-made; software that has been produced by a consulted…

Page 8

Preview of page 8
Validation and verification

Validation: The process of ensuring that input data conforms to predetermined
standards; ensuring that the input data is valid.

The use of an input mask can aid in validating input data

Methods of validation

Identify Amplify Exemplify

Range An upper and/or lower Value must lie between 0…

Page 9

Preview of page 9
Verification: The process of ensuring that input data matches the source data. This can be
done by entering the source data twice and comparing results (automatic) or
having a manual check of the input data.

Methods of verification

Identify Amplify Exemplify

Manual verification Proofreading; visually checking
the source and object…

Page 10

Preview of page 10
Operating Systems

Real time: Where the processing of inputs and instructions is started as soon as is
possible, with an output expected in a timely manner.

Batch processed: Where a number of similar jobs are grouped together and
processed only when all inputs have been collected and necessary resources


No comments have yet been made

Similar Computing resources:

See all Computing resources »