Virtual Memory and Flash Memory.

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Presentation transcript:

Virtual Memory and Flash Memory. Keywords Flash Memory, Hard Disk, Disk Thrashing/Swapping, Portable, Internal, External, Secondary Storage. Memory Virtual Memory and Flash Memory.

RAM/ROM Recap Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. Starter activity

RAM/ROM Recap Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. Starter activity

Virtual Memory TASK: What is virtual memory? TASK: Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. TASK: What is virtual memory? Virtual memory is simply an area of secondary storage that is used like RAM. It is temporary storage that is located on the hard disk. TASK: What is flash memory? Starter activity Flash memory is a type of non-volatile storage. It retains its information even without power. So it is ideal for devices such as cameras, solid state drives and so on.

Diagram Activity A - Fetch the first instruction (secondary storage) Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. Activity A - Fetch the first instruction (secondary storage) Reinforce the slow, performance of the bus/magnetic drive etc Activity B - Fetch the instruction from RAM Issues with insufficient RAM, Swapping out etc Activity C – RAM is full Use virtual memory Virtual memory – pros and cons

Virtual Memory Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. TASK: What are the advantages and disadvantages of virtual memory? Advantages: You can run more applications at once You can run larger applications with less real RAM You don't have buy more memory RAM Starter activity Disadvantages: Applications run slower It takes more time to switch between applications Less hard drive space for your use

Revision Games Type the following into Google: Then click this link: Objectives BEGINNER: Explain what virtual memory is. ADVANCED: State the advantages and disadvantages of virtual memory. EXPERT: Understand what flash memory is. Type the following into Google: Then click this link: Work on 1 (ONE) of the games.