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Questions and Answers
What are the five basic operations performed by the computer?
What are the five basic operations performed by the computer?
Accept data, store data, process data, retrieve data, and produce output.
Define ALU, CU, and CPU.
Define ALU, CU, and CPU.
ALU (Arithmetic Logic Unit) performs arithmetic and logical operations; CU (Control Unit) controls the operations of the CPU; CPU (Central Processing Unit) is the brain of the computer that processes instructions.
The task of performing arithmetic and logical operations is called:
The task of performing arithmetic and logical operations is called:
The ALU and CU jointly are known as:
The ALU and CU jointly are known as:
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The process of producing results from the data for getting useful information is called:
The process of producing results from the data for getting useful information is called:
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Mouse is an output device.
Mouse is an output device.
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OCR stands for Optical Content Reader.
OCR stands for Optical Content Reader.
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LCD Monitor is used in notebook computers.
LCD Monitor is used in notebook computers.
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Speed of DOT Matrix Printer is measured in Characters Per Second.
Speed of DOT Matrix Printer is measured in Characters Per Second.
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Plotters are used to produce high quality drawings and images, such as construction plans for buildings or blueprints for mechanical objects.
Plotters are used to produce high quality drawings and images, such as construction plans for buildings or blueprints for mechanical objects.
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Operating System (OS) is an Application Software.
Operating System (OS) is an Application Software.
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High level languages are easier to program than low level language.
High level languages are easier to program than low level language.
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Computer language FORTRAN is used to solve scientific and mathematical problems.
Computer language FORTRAN is used to solve scientific and mathematical problems.
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C is an object-oriented programming language.
C is an object-oriented programming language.
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Compiler converts high level languages into machine language.
Compiler converts high level languages into machine language.
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What are the two basic types of software?
What are the two basic types of software?
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Name three popular operating systems.
Name three popular operating systems.
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What is the role of a compiler?
What is the role of a compiler?
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Define application software.
Define application software.
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What characterizes customized software?
What characterizes customized software?
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Which of the following is an example of a high level language?
Which of the following is an example of a high level language?
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Study Notes
Introduction
- Computers process data into meaningful information.
- Computers perform 5 main functions: accept data, store data, process data, retrieve stored data, print results
Computer Organisation
- Computers are organised into 5 main components: Input Unit, Control Unit, Memory, Arithmetic Logic Unit, Output Unit
- The Control Unit (CU) controls all operations within the computer, -Manages data flow -Determines the start and stop of operations -Decides where to store data
- The Arithmetic Logic Unit (ALU) performs arithmetic and logical operations -Arithmetic operations: addition, subtraction, multiplication, division -Logic operations: comparison
- The CPU consists of the CU and ALU together.
- The CPU can be considered the brain of the computer.
Peripheral Devices
- Peripheral devices connect to the computer externally to perform specific functions.
- Categories of peripheral devices: Input devices, Output devices, Other peripherals
Input Devices
- Input devices feed data and instructions into the computer.
- Common input devices include: -Keyboard -Mouse -Light Pen -Optical/Magnetic Scanner -Touch Screen -Microphone -Track Ball
Output Devices
- Output devices return processed data (information) to the user.
- Common output devices include: -Monitor (Visual Display Unit) -Printers -Plotter -Speakers
Software
- Software are sets of instructions (programs) that make the computer perform a specific set of tasks in a particular order.
- Software is classified into 2 main categories: -System Software -Application Software
System Software
- System software is responsible for running the computer and managing its resources. -Examples: Operating System, Utilities
- Operating System (OS) provides user interface, manages hardware devices, and supports application programs. -Examples: UNIX, Windows, Linux
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Description
This quiz covers the essential functions and organization of computers, including the main components of a computer system. It explores the roles of the Central Processing Unit, peripheral devices, and input/output mechanisms. Master the foundational knowledge of how computers process data effectively.
