12 Questions
What is the function of an operating system?
Manages computer hardware, software resources, and provides common services for computer programs
Which of the following is an example of an internal hardware device?
CPU
What is the function of an input device?
Used to enter information to a computer for processing
Which category of software is designed to run a computer’s hardware and application software?
System software
What is the function of the central processing unit (CPU) in a computer?
Executing commands and affecting device speed
How is data defined?
A collection of individual facts or statistics that include addresses, names, temperatures, dates, or distances
What is the main function of Random Access Memory (RAM)?
Storing data until the machine is switched off
How do solid state drives (SSD) differ from hard disk drives (HDD)?
They have no differences, they serve the same purpose
What is the smallest unit of data that a computer can process?
Bit
In the binary system, which digits are used to express numbers and values?
0 and 1
What does ASCII stand for in computing?
American Standard Code for Information Interchange
How many characters and symbols are included in the Windows-1252 character set, based on the extended ASCII table?
256
Study Notes
Functions in a Computer System
- An operating system manages computer hardware resources and provides common services to computer programs.
Computer Hardware
- Internal hardware devices include the central processing unit (CPU), memory, and storage devices.
- Examples of input devices include keyboards, scanners, and microphones.
Software Categories
- System software is designed to run a computer’s hardware and application software.
Central Processing Unit (CPU)
- The CPU executes instructions and performs calculations.
Data and Memory
- Data is defined as the raw, unorganized facts that are input into a computer.
- Random Access Memory (RAM) temporarily stores data and program instructions that the CPU uses to perform tasks.
- The smallest unit of data that a computer can process is a bit.
Storage Devices
- Solid state drives (SSD) differ from hard disk drives (HDD) in that SSDs use flash memory to store data, whereas HDDs use spinning disks and moving heads.
Binary System and ASCII
- In the binary system, the digits 0 and 1 are used to express numbers and values.
- ASCII stands for American Standard Code for Information Interchange.
- The Windows-1252 character set, based on the extended ASCII table, includes 256 characters and symbols.
Learn about the fundamental concepts of operating systems, computer hardware, and software. Explore the role of an operating system in managing resources and providing services for computer programs.
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