Flashcards
Computing Revision 23.02.18
Cards in this deck (33)
- 1Von Neumann Arcitecture / Data Registers (P1)>>>>
- 2General Processing UnitThe general processing unit contains the control unit and the arithmetic/logic unit.
- 3Arithmetic/Logic UnitThis will decode the instruction in the memory data register.
- 4Program CounterThis will hold the memory address of the instruction for each cycle.
- 5Memory Address Register (MAR)This will hold the memory address about to be used by the CPU.
- 6Memory Data Register (MDR)This holds the actual data or instruction about to be used in the CPU.
- 7Embedded Systems (P1)>>>>
- 8Purpose of an embedded systemIts a computer system with a dedicated function.
- 9Examples of an embedded systemCash Points, Printers, Calculators and Game Consoles.
- 10Network topologies, protocols and layers (P1)>>>>
- 11TCIPUsed to turn data into packets and send/receive these through the internet.
- 12HTTPTransmit website data from server to client
- 13HTTPSTransmit encrypted websites and data to and from clients - establishes a "Secure" connection between server and client.
- 14FTPEnable the sending and receiving of files. Allows public and secure access to devices.
- 15POPA now obsolete protocol for the FETCHING of email messages from a client server to a client.
- 16IMAPProvides a method of connecting to internet mail boxes. Handles both the sending and receiving of email messages.
- 17SMTPHandles the sending of email messages.
- 18Examples of WIFI channels2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, and 5.9 GHz.
- 19Producing Robust Programs (P2)>>>>
- 20Input ValidationInput validation is making sure that the end-user is able to enter the correct/valid information and the program to only accept that.
- 21Planning for contingenciesA contingency plan is a plan with that is devised for an outcome other than an usual unexpected plan. Often used for risk management.
- 22Final/Terminal TestingBefore releasing a new software a company will employ alpha testers which will use a trial version of the software to make sure everything works.
- 23Performance TestTests how quickly certain features run and their impact on computer resources before realising the software.
- 24Usability TestTests how user friendly the interface and features are before release.
- 25Load/Stress TestTests how it copes under extreme conditions such as many users heavily using the program at the same time before realising the software.
- 26Security TestTests vulnerability to attacks and how securely data is stored before realising the software.
- 27Data Representations of characters, images and compression (P2)>>>>
- 28The number of bits per character and The number of characters that can be represented by ASCII8 Bits per character.
It can also represent 128 Characters. - 29The number of bits per character and The number of characters that can be represented by Unicode16 Bits per character.
It can also represent 65,536 Characters. - 30ResolutionThe number of pixels in the image the better quality the image.
- 31Colour depthIncreasing colour depth fives more colours which improves the quality of the image.
- 32Lossy CompressionMeans that it offers a high compression rate but the quality isn't as good as lossless.
- 33Lossless CompressionMeans that the file size is compressed but the quality remains the same.
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- Flashcards on Computing Revision 23.02.18, created by Billy Chappell on 22/02/2018.
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- Billy Chappell
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