Our summary for Grade 12 is a structured and visually appealing resource developed using the Study Opportunities Grade 12 textbook. Each chapter is characterised by a unique color, which enhances the reading experience and makes the content easily identifiable. The summary covers Term 01-04's work ...
Answer: Computers are effective, accurate, reliable, and important means of communication.
2.
What are the types of computer systems?
Answer: Computer systems are divided into non-portable (desktops and servers) and portable (laptops, tablets, smartphones) depending on power, usage, size, and software.
3.
What is the role of hardware in an ICT system?
Answer: Hardware is crucial as it processes data into information, supports various input and output devices, and enables the functions of computer systems.
4.
What are the advantages of using a mouse?
Answer: The mouse is easy to learn, facilitates efficient graphical interaction, provides commands through various clicks, and is essential for GUI use.
5.
What is the difference between wired and wireless keyboards?
Answer: Wired keyboards connect directly with cables for stable performance, while wireless keyboards offer mobility but may face battery or connectivity issues.
, Section 01 : System technologies
MODULE 1.1 : COMPUTERS IN OUR EVERYDAY LIVES
Why do we use computers?
• Computers are effective, accurate and reliable.
• Computers are an important means of communication.
Effectiveness
• Computers save time and work faster.
• Computers reduce workload and take over calculations.
• Computers save resources through efficient use of electricity, air conditioning and paper.
• Sensors and technology limit energy waste and carbon dioxide emissions.
Accuracy
• Accurate application programs and data are necessary for computers to operate accurately.
• Accurate calculations ensure precision in mass production.
• Computers can repeatedly perform tasks 100% accurately with correct software.
Reliability
• Computers are accurate and don't tire like humans.
• Computerized solutions require long development time and are expensive.
• In the long term, computerized solutions are cost effective.
• Computerized solutions are chosen for their efficiency.
Communication
• Computers enable us to communicate globally and effectively.
• Distance is no longer a limitation in the business world.
• ICT offers various communication methods and saves on costs.
• Social networks enable global social interaction.
• Computers offer economic benefits, entertainment and fun.
Types of computer systems
• Comparison factors for computers include power, usage, size and software.
• Computers are divided into non-portable and portable computers.
• Non-portable computers are large and more powerful.
• Non-portable computers can be desktops or servers.
• Desktop computers have different configurations and prices.
• A server is a powerful computer that provides services to a network.
What is an entry level computer?
• All computer types have an entry-level model with low hardware specifications.
• Entry-level models are often installed with "Home Editions" of software.
• Specifications for entry-level systems change over time.
, Portable computers
• Portable computers have all-in-one design and are easy to carry.
• They have built-in battery and protective case.
• Laptops sell better than desktops.
• Smartphones, tablets and phablets are always online with cellular connectivity.
• Laptops use WiFi or fixed connection for internet.
Examples
• Laptop: Larger than 12" or 13" screen, similar.
• Tablet: Portable computer with touch or pen-sensitive screen.
• Hybrid PC: Screen that flips or folds down, used as a laptop or tablet.
• Smartphone: Mobile phone with operating system and apps, touch screen interface.
• Phablet: Smartphone with screen larger than 5".
Categories of users
• Computer specifications depend on the needs of the user.
• Types of users include general, mobile and super users.
• Official definitions and descriptions of the different types of users.
Personal user
• Personal users: office, internet, e-mail, social networks, Skype, photos, entertainment.
• Basic computers are powerful enough.
SOHO user
• SOHO users: accounting, databases, electronic documentation, planning.
• Architects and engineers: powerful computers for plan design.
Superuser
• Power users require powerful hardware and software.
• This includes game enthusiasts, architects, engineers, video editors and scientists.
• They require fast processors and large amounts of memory and storage capacity.
• Superusers use all advanced features of the software they work on.
Mobile user
• Mobile users are not necessarily a separate category.
• They just want to take their devices with them wherever they go.
• Every category can now use mobile technology.
• The technology used depends on the purpose of the user.
• Laptops for productive and work-related tasks.
• Smartphones and tablets for internet, e-mail, games, GPS, notes, photos and recordings.
Convergence
• Convergence: different technologies and functions are merged into one device.
• Smartphone and tablet: combination of various technologies in one device.
• One device for multiple tasks without carrying multiple devices.
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