16 Questions
What is the primary function of the Central Processing Unit (CPU)?
To manipulate data and control other components
What type of data is best suited for human data-entry devices?
Text
Which component of a computer-based information system is responsible for temporarily storing data and program instructions?
Primary storage
What is the purpose of communication technologies in a computer-based information system?
To provide for the flow of data between networks and the CPU
What is the primary function of output technologies in a computer-based information system?
To present data and information in a form people can understand
What type of input technology is suitable for numeric data?
All of the above
Which component of a computer-based information system is responsible for storing data and programs for future use?
Secondary storage
What is the term for the physical components of a computer that perform input, processing, output, and storage activities?
Hardware
What is the primary characteristic of source-data automation devices?
They input data with minimal human intervention
What is the function of the control unit in the CPU?
It sequentially accesses program instructions and controls the flow of data
What is the purpose of the arithmetic-logic unit (ALU) in the CPU?
It performs arithmetic and logical operations
What is the term used to refer to microprocessors?
Chips
What is the primary function of human data-entry devices?
To require a certain amount of human effort to input data
What is the purpose of output devices?
To transmit output to the user
What is the term used to refer to the central processing unit?
CPU
What is the function of registers in the CPU?
To store data temporarily
Study Notes
Hardware Components
- Hardware refers to the physical components of a computer that perform input, processing, output, and storage activities.
CPU (Microprocessor)
- The central processing unit (CPU) performs actual computation inside any computer.
- The CPU is a microprocessor made up of millions of microscopic transistors embedded on a chip.
Parts of a Computer
- Central Processing Unit (CPU): Manipulates data and controls tasks performed by other components.
- Primary Storage: Temporarily stores data and program instructions during processing.
- Secondary Storage: Stores data and programs for future use.
- Input Technologies: Accept data and instructions, converting them to a form the computer can understand.
- Output Technologies: Present data and information in a form people can understand.
- Communication Technologies: Provide for the flow of data from external computer networks to the CPU and from the CPU to computer networks.
Input Technologies
- Input technologies allow users to enter data into a computer.
- Data can be of different types, including numeric, text, multimedia (images, video, and sound).
- Each data type has its suitable input technologies.
- Two main types of input devices: • Human data-entry devices (require human effort to input data): Examples include keyboard, mouse, touch screen, and voice recognition. • Source-data automation devices (input data with minimal human intervention): Examples include bar code readers.
Output Technologies
- Output generated by a computer can be transmitted to the user via several output devices.
- Output devices include monitors, printers, and plotters.
Central Processing Unit (CPU)
- The CPU has different parts, which perform different functions: • Control unit: sequentially accesses program instructions, decodes them, and controls the flow of data. • Arithmetic-Logic Unit (ALU). • Registers.
This quiz covers the concepts of hardware and mobile devices in information technology, as studied in the Department of Socio-computing at the Faculty of Economics and Political Science. It is based on chapters from 'Introduction to Information Systems' and 'Principles of Information Systems' textbooks.
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