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Questions and Answers
What is the CPU often described as?
What is the CPU often described as?
- The brain of the computer (correct)
- The heart of the computer
- The memory of the computer
- The power of the computer
What is the unit of measurement for CPU speed?
What is the unit of measurement for CPU speed?
- Bits
- Bytes
- Hertz (correct)
- Cycles
What is the function of RAM in a computer?
What is the function of RAM in a computer?
- To control the computer's power supply
- To store permanent data
- To process instructions and data
- To hold instructions and data for processing (correct)
What is the system unit also called?
What is the system unit also called?
What is the clock speed of a 1.8 GHz processor compared to a 900 MHz processor?
What is the clock speed of a 1.8 GHz processor compared to a 900 MHz processor?
What is the type of processor used in laptops?
What is the type of processor used in laptops?
What is the primary function of an operating system?
What is the primary function of an operating system?
What is the main purpose of utility programs?
What is the main purpose of utility programs?
What is a crucial function of an operating system in a computer?
What is a crucial function of an operating system in a computer?
What is a device driver responsible for?
What is a device driver responsible for?
What is an essential component of system software?
What is an essential component of system software?
What is a function of operating system software?
What is a function of operating system software?
What is the primary function of an Ethernet Port?
What is the primary function of an Ethernet Port?
What type of software manages a computer's internal and external resources?
What type of software manages a computer's internal and external resources?
What is the primary function of a VGA Port?
What is the primary function of a VGA Port?
What type of software is developed to solve a particular problem for users?
What type of software is developed to solve a particular problem for users?
What is the primary function of a Parallel Port?
What is the primary function of a Parallel Port?
What type of software directs a computer's processor to perform specific operations?
What type of software directs a computer's processor to perform specific operations?
What is an example of Presentation Software?
What is an example of Presentation Software?
What type of software is specifically written for a particular company or individual?
What type of software is specifically written for a particular company or individual?
What is the primary purpose of copyright in packaged software?
What is the primary purpose of copyright in packaged software?
What is an example of Database Software?
What is an example of Database Software?
What is the term for software that is available for anyone to use, modify, and distribute?
What is the term for software that is available for anyone to use, modify, and distribute?
What is the term for software that is available for a fee, but the user can try it for a limited time before deciding to purchase?
What is the term for software that is available for a fee, but the user can try it for a limited time before deciding to purchase?
What is public domain software?
What is public domain software?
What is the main purpose of freeware?
What is the main purpose of freeware?
What is the difference between freeware and shareware?
What is the difference between freeware and shareware?
What is pirate software?
What is pirate software?
What are the two main categories of software?
What are the two main categories of software?
What is an operating system (OS)?
What is an operating system (OS)?
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Study Notes
Types of Software
- Public domain software: not protected by copyright, can be duplicated by anyone at will
- Freeware: copyrighted computer software, made available for use free of charge, authors retain control of future development
- Shareware: commercial software, copyrighted, can be copied for trial, payment required for continued use
- Pirate software: software obtained illegally, e.g. downloaded from the internet, copied CD/DVD, or bought in a foreign market
Hardware Components
- System unit (chassis): metal or plastic case housing a computer's electronic components
- CPU (Central Processing Unit): the brain of the computer, processes instructions and data
- CPU speed: measured by the number of completed instruction cycles per second, in Hertz (Hz)
- RAM (Random Access Memory): holds instructions for processing data, processed data, and raw data
System Software
- Three basic components: operating systems, utility programs, and device drivers
- Operating systems: principal component of system software, provide resource management services, user interface, hardware independence, memory management, processing tasks, networking capability, and control access to system resources
- Utility programs: small programs that support, enhance, or expand existing programs, perform tasks related to control, allocation, and maintenance of computer resources
- Device drivers: help the computer control peripheral devices
Operating Systems
- Every general-purpose computer must have an operating system to run other programs
- Functions: perform common computer hardware functions, provide a user interface, provide hardware independence, manage system memory, manage processing tasks, provide networking capability, control access to system resources, and manage files
- Examples: Microsoft Windows, macOS, Linux
Ports and Connectors
- Ethernet Port: connects to a network and high-speed internet
- Serial Ports: used for external modems and older computer mouse
- Parallel Ports: used for scanners and printers
- Universal Serial Bus (USB) Ports: connects all kinds of external USB devices
- VGA Port: connects monitor to a computer's video card
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