Flashcards
ICT Revision Cards
Cards in this deck (19)
- 1What is an analogue signal?It is a continuous varying signal that represents a physical quantity like sound, temperature, motion, light.
- 2What is sound sampling?It is the process of regularly measuring the voltage signal and string the sequence of measurements in digital storage media.
- 3What is sample rate?It is the amount of samples taken pr second in Hertz (Hz).
- 4What is bit rate?It is the number of bits required to store 1 second of sound.
Bit Depth x Sample Rate. - 5What is bit rate?It is the amount of bits required to store each sound sample.
- 6What is data portability?It is the ability to transfer data from one software system or application without the need to re-enter the data.
- 7What is data compression?It is when you use compression software to make the file size smaller.
- 8What is optimising?It is when a graphic is made smaller by reducing the resolution before adding it to a website.
- 9What is system software?It is the operating system and all utility programs that enable the computer to operate its hardware and application software.
- 10What is application software?It is programs designed to carry out a specific task for the end user, like word processing or spreadsheet programs.
- 11What is an operating system?It is a programs to allow the hardware to communicate and operating with the computer software like windows XP.
- 12What is a utility program?It is a programs that preforms a specific task in managing system resources such as backup or anti-virus.
- 13What is a multi-user system?It is when two or more users can communicate to the file-server at any one time.
- 14What is time slicing?It is when the processor divides its time equally amongst tasks.
- 15What is backup?It is a complete copy of the original file or data in case the original is lost or damaged.
- 16What is a virus?It is a program designed intentionally or accidentally to damage a computer system.
- 17What is batch processing?It involves collecting batches of similar data over a period of time and then processing them all at the same time, like overnight or on weekends.
(e.g Electricity bill) - 18What is real time processing?It occurs when the system responds instantly to events, one transaction effects the other.
- 19What is anti-virus software?It is used to detect, locate and remove harmful viruses from your computer.
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- Flashcards on ICT Revision Cards, created by Sasha McCollum on 25/11/2017.
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- Sasha McCollum
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