Volatile memory means that it is cleared/emptied when the power is lost. This can be found in Computers, Smart phones, Watches and is seen as RAM or Cache.
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What does Non - volatile mean ?
Non- Volatile memory means that the data is not cleared/emptied when the power is lost. Examples of this are ROM, BIOS, Flash Memory. These can be found in embedded systems such as DVD players and Air-Con machines.
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What is CPU cache ?
CPU CACHE is a small piece of volatile memory found on the CPU. It contains the MAR and MDR. When an instruction is loaded from RAM, the address goes into the MAR and the instruction (EG Add) goes into the MDR
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What is clock speed ?
The number of instructions that the CPU can make per second
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What does cores mean in terms of CPU ?
How many brains the computer basically has (The more cores [brains] the more it can process at once) (The faster the clock speed does not mean the computer will perform better; It just means that the computer will be able to process the
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What is the function of the Memory Address Register (MAR) ?
holds the address of the data that needs to be calculated
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what is the function of the Memory Data Register (MDR) ?
holds the instructions for the CPU to do (EG Add, Minus)
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What is the function of the Accumulator ?
stores the current running total of the calculations
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What is the function of the Arithmetic Logic Unit (ALU) ?
performs the calculations/sorts/searches/logic
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What is the cache ?
is a small amount of volatile memory that holds the current instructions (with MAR and MDR)
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What is the function of the program counter ?
this stores the instruction we are on (EG instruction 1) then increases to 2,3,4,5 and so on…
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What is the function of the control unit ?
is in charge of getting the INPUTS (EG from the keyboard) and pushing to the outputs (EG the screen) – it is also in charge of making sure the data goes around the CPU
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Other cards in this set
Card 2
Front
What does Non - volatile mean ?
Back
Non- Volatile memory means that the data is not cleared/emptied when the power is lost. Examples of this are ROM, BIOS, Flash Memory. These can be found in embedded systems such as DVD players and Air-Con machines.
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