Flashcards
Computing revision
Flashcards do conjunto (12)
- 1Main memory is the ram. This is volatile storage.Secondary storage or hdd is non volatilevolatile. However will last shorter as it has many moving parts. Thisnis alsonthe cheapest per megabyte
- 2The cache is the small amount of memory next to the cpuEven though it is Incredibly small and expensive the data transfer speed is the fastest
- 3Main memory is the ram. This is volatile dataSecondary storage, or the hard disk is non volatile data. However this doesn't last as long as ram because it has moving parts
- 41 megahertz is 1 million cycles per second1 gigahertz is 1 billion cycles
- 5The CPU has three parts. The cache , ALU and control unitThe ALU deals with arithmetic and logic stuff.
The control unit controls the sketch decode execute cycle - 6The cache is the small amount of memory next to the CPU.Eventhough its is incredibly small it Shasthe highest data transfer speed
- 7The fetch decode execute cycle is what the CPU doesThe address bus first finds the address of the required data thenthen the data bus takes it from the ram or cache to the ALU to be decoded
- 8Once decoded the data is sent to the control untinto be executedThe data is either sent back to a memory device or executed to the moniter
- 9The fetch decode execute cycle is measured in hertz. One hertz is one cycleThis is known as clock speed
- 10Some CPUs can have multiple cores. In theory this should increase the speed of the computerHowever, this does not always work because not all programs are wwritten with this in mind
- 11Input devices are items like keyboards that put data into the pcpc. Storage devices hold data. These are things like usbs and hddOutput devices output data. These at things such as monitorsmonitors and speakers.
- 12Overall components that aren't inside the case are known as peripheralsSome peripherals are modified for disabled people such as the braille keyboard
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- FlashCards sobre Computing revision, criado por lcooper911 em 15-12-2014.
- Criado por
- lcooper911
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