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Lesson Summary

The following points summarize the main elements of this lesson:

• There are two basic kinds of memory in a computer: ROM and RAM.
• Memory chips come in many sizes and shapes: DIPPs, SIPPs, DRAM, SRAM.
• Installing memory (RAM) is easy; however, you must be able to match the size and configuration of the memory chips to the motherboard.
• The number of memory modules needed to fill one memory bank equals the width of the external data bus (in bits) divided by the width of the SIMM (in bits).
• Cache memory is used to increase the performance of a computer.
• Cache memory (SRAM) is faster, but more expensive, than the standard DRAM; therefore, it is used in small quantities and for special purposes.
• There are two types of cache memory: L1 and L2.

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