Flashcards
Computer Science Revision Resource
Cards in this deck (15)
- 1List two output devices that you may find at a ComputerComputer Screen and speakers
- 2List three input devices that you may find on a ComputerKeyboard, Mouse, touchpad, touchpen
- 3Describe the difference between a dual core and a quad core processorA dual core processor is able to run multiple tasks simultaniously with two cores whereas a quad core can run multiple tasks on four cores
- 4List the three different types of storage devicesSSD (Solid State Drive)
Magnetic
Optical - 5Describe the use of the RAMStores data that is currently being used by the computer. This data goes when the computer loses power.
- 6Describe the difference brtween Volitile and non-volitile memoryVolitile memory is the RAM and is lost when the computer power is off.
Non-volitile memory is on the hard drive and will not be lost when the computer is turnt off. - 7Convert the denary value 28 into binary11100
- 8Convert the denary value 255 into binary1111111
- 9Convert the binary value 1100100 into Denary100
- 10List all of the data types and an exampleString (Letters, symbols)
Integer (Whole numbers)
Real (Decimal numbers)
Floar (True, False) - 11Describe what a mask check isData must be input in a certain way eg A postcode
- 12Describe the difference between a syntax and logic errorSyntax errors are errors that will crash the code due to a mistake within the language eg (PRINT ("Incorrect"))
Logic errors are errors that will not stop the program from running, but will make it not do what you want it to do. - 13Describe the difference between lossy and lossless compressionLossy compression removes part of the file that would not be noticed.
Lossless compression keeps all of the data that is stored on the original file. - 14Show the measurement for resolutionDPI (Dots Per Inch) or PPI (Pixels Per Inch)
- 15How many colours can the following colour depths have 1 2 4 81 - 2 colours
2 - 4 colours
4 - 16 colours
8 - 256 colours
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- Flashcards on Computer Science Revision Resource, created by Jack Davies on 08/06/2016.
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- Jack Davies
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