Information & Communication

Technology

Year 11 (2015)

Information & Communication Technology (ICT)

Chapter 1: Types and Components of Computer SystemsPart 1: Hardware/Software & Types of ComputersPart 2: Main components of a Computer SystemsPart 3: Operating SystemsPart 4: Recent Developments

Chapter 2: Input & Output DevicesPart 1: Manual Input DevicesPart 2: Direct Input DevicesPart 3: SensorsPart 4: Output DevicesPart 5: Control Devices

Chapter 3: Storage Devices & Media

Part 1: Data Storage & Backing DataPart 2: Ways in Which Data is Stored and ReadPart 3: Storage Media IntroductionPart 4: Magnetic Storage MediaPart 5: Optical Storage MediaPart 6: Solid State Storage MediaPart 7: Comparison of Storage Media

Chapter 4: COMPUTER NETWORKS

Part 1: IntroductionPart 2: Common Types of

NetworkPart 3: Network DevicesPart 4: The InternetPart 5: IntranetsPart 6: Network SecurityPart 7: Communication

Methods

Chapter 5: Data types

& Databases

1. Data Types

2. Searching for Data

3. Database Structures

4. Types of Databases

5. Analogue & Digital Data

What you will learn in Part 1: Data Types

Know what data types are and what they

are used for.

Understand and identify different data

types including text, number, percentage,

date/time and Boolean.

Be able to select the correct data type

for different sets of data.

What is Data?“Information that is

either digital or analogue and can be

manipulated to produce a result.”

• Data exist in many forms for example text,

numbers or date.

What is Data?• Categories of data:1. Digital Data - Data that is stored and

manipulated on a computer.2. Analogue Data - Data which is gathered

without a computer

Data Types?• The main types of data found in a

computer system are:1. Boolean – True/False (Logical data types)2. Text/Alphanumeric- Data which is

gathered without a computer3. Numeric - Numbers4. Currency - Money5. Date/Time6. Percentage

1. Boolean ?• Boolean data can only have one of two

values – true or false.• Used when there are only two possible

responses to a question.True / FalseYes / NoOn / OffMale /Female1 or 0

2. Text / Alphanumeric ?• Text - used for data that is made up

of letters only• Alphanumeric - used for data that is made

up of letters AND numbers

3. Numeric Data?• Numeric data can be in 2 forms: Integer and

Real1. Integer Numbers – made up of whole

numbers and can be positive or negative values.

2. Real Numbers – numbers with decimals and can be positive or negative (above or below zero)

3. Numeric Data?• Numeric data can be in 2 forms: Integer and

RealInteger Numbers

3. Numeric Data?• Numeric data can be in 2 forms: Integer and

RealReal Numbers

4. Currency Numbers?• Currency numbers are real

numbers (decimals) that have been formatted to include money symbols ($, £, MYR etc.)

• Usually shown to 2 decimals places• Currency values can be both positive (above

zero) or negative (below zero)

5. Percentage Numbers?• Percentage numbers are real

numbers (decimals) that have been formatted to show values out of 100. For example:

• Percentage are usually shown with the percentage symbol (%)

• Percentage values can be positive and negative

6. Date / Time ?• Date and Time data can be shown in many different

ways. The most common ways are:

Chapter 5: Data types

& Databases

1. Data Types

2. Searching for Data

3. Database Structures

4. Types of Databases

5. Analogue & Digital Data

What you will learn in Part 2: Searching for Data

How to use 'logical

operators' to structure

searches

How to use 'mathematical

operators' to structure

searches

What is Data?“Information that is

either digital or analogue and can be

manipulated to produce a result.”

• Data exist in many forms for example text,

numbers or date.