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A computer is an electronic device that accepts data (input), processes it according to instructions (program), produces output (information), and stores data/results for future use.
Basic characteristics (exam points):
A complete computer system includes:
CPU is the brain of the computer.
Keyboard, mouse, scanner, barcode reader.
Monitor, printer, speakers.
Controls hardware and provides platform for applications. Examples: operating system (Windows/Linux), device drivers.
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A computer is an electronic device that accepts data (input), processes it according to instructions (program), produces output (information), and stores data/results for future use.
Basic characteristics (exam points):
A complete computer system includes:
CPU is the brain of the computer.
Keyboard, mouse, scanner, barcode reader.
Monitor, printer, speakers.
Controls hardware and provides platform for applications. Examples: operating system (Windows/Linux), device drivers.
Used to perform user tasks. Examples: MS Word, Excel, PowerPoint, accounting software, browsers.
Helps maintain and protect system. Examples: antivirus, backup tools, disk cleanup.
Information Processing Cycle (IPC): Input → Processing → Output → Storage (and feedback).
Computers are used in:
Digital literacy means ability to use computers, internet and basic software safely and effectively.
Ethical practices:
From this topic
Hardware is physical and can be touched; software is intangible programs. Hardware is manufactured; software is developed. Hardware needs software to work; software runs on hardware.
Speed, accuracy, storage, automation, versatility and diligence are characteristics (any three).
A computer system is not only a machine; it is a complete set-up that works together to process information.
Main components:
All these components together make the computer system useful for business work.