Computer science CAT

Revision Topics Internet Technologies Automatic and Manual Data Input and Output Data processing using Spreadsheets Algorithms and Boolean Logic HTML/CSS - Web page design User Interface Design Tablet Computer Features Computer Networks Online Safety

Revision Topics

are areas of study or subjects students revisit to reinforce their learning.

Internet Technologies

The use of technologies encompasses various tools and systems that facilitate communication and information exchange over networks.

Automatic Data Input

data input is when information is entered into a system without human intervention.

Manual Data Input

data input requires human effort to enter information into a system.

Data Output

The process of presenting or delivering the results of data processing is known as .

Data Processing using Spreadsheets

involves organizing, analyzing, and manipulating data through software like Excel.

Algorithms

An is a step-by-step procedure for solving problems or performing tasks in computing.

Boolean Logic

is a form of algebra used in computer programming that deals with true and false values.

HTML

stands for HyperText Markup Language and is used for creating web pages.

CSS

is a style sheet language used for describing the appearance of HTML documents.

User Interface Design

This process focuses on designing the to enhance user interaction with applications.

Tablet Computer Features

Common of tablet computers include touch screens, portability, and wireless connectivity.

Computer Networks

consist of interconnected computers that communicate and share resources.

Online Safety

Staying aware of potential threats and practicing safe behaviors online is part of .

Types of Internet Technologies

Different forms of technologies include the internet, intranet, and extranet.

Examples of Automatic Data Input

Examples include using sensors, barcode scanners, and OCR (Optical Character Recognition) for .

Examples of Manual Data Input

Examples include typing data into forms, surveys, and databases requiring human input for .

Purpose of Data Output

The purpose of is to provide actionable insights and information derived from processed data.

Functions of Spreadsheets

Spreadsheets allow users to perform calculations, create graphs, and analyze data through .

Real-life Applications of Algorithms

Algorithms are used in search engines, sorting data, and in recommendation systems for .

Basic Operators in Boolean Logic

The basic operators include AND, OR, and NOT used in creating conditions for .

Purpose of HTML

HTML is essential for structuring content on the web, which allows for proper formatting and presentation of .

Purpose of CSS

CSS is used to enhance the appearance of web pages by controlling layout, colors, and fonts for .

Principles of User Interface Design

Good UI design principles include usability, accessibility, and visual aesthetics aimed at improving overall .

Tablet Computer Usage Scenarios

Tablets are widely used for education, entertainment, and business applications due to their portability and functionality for .

Benefits of Computer Networks

Benefits include resource sharing, enhanced communication, and increased collaboration among users in a .

Practices for Online Safety

Practices include using strong passwords, avoiding suspicious links, and keeping software updated to ensure .

Personal Computers Definition

An electronic device which is designed to be used one at a time. Example 1 - Tablet/iPad; Example 2 - A laptop.

Mobile Devices Definition

An electronic device which is portable and can connect to the internet. Example 1 - Mobile Phones; Example 2 - Tablets/iPads.

Multi-Functional Devices Definition

An electronic device that has many different uses. Example 1 - A printer; Example 2 - A Japanese toilet (Smart Toilet).

Servers Definition

A computer which sends resources to clients (other computers). Example 1 - Web server; Example 2 - Mail server.

Types of Internal Components - Input

Devices used to send data into a computer system, such as a keyboard and mouse.

Types of Internal Components - Output

Devices that send or display data from the processor, like a speaker and screen.

Types of Internal Components - Storage

A device which stores data, including hard drives and memory sticks.

Process Purpose - Input

To send data into another device.

Process Purpose - Output

To send or display data from the processor.

Example of CPU

An internal component that processes data. Example: Intel Core i7.

Example of GPU

An internal component responsible for rendering images. Example: NVIDIA GeForce RTX 3080.

Functions of RAM

Random Access Memory is used for temporary data storage when a computer is running applications.

Use of Hard Drive

A device used for permanent data storage within a computer system.

Mobile Phone Features

Typically includes touchscreen capability, internet connectivity, and mobile applications.

Haptic Feedback Definition

Technology that provides tactile sensations to the user, often found in mobile devices and gaming controllers.

Summary Insight

Process units are commonly classified into two types: CPU and GPU.

Learning Goal

To learn how servers send data and services across oceans and continents.