We have already calculated the representation and Chapter II data have been finished, then starting from this chapter we will learn to enter the storage system. So what this chapter to talk about it?
This chapter is a key test of the calendar year. In particular, it is this part of me out of the frame with a red box, which is particularly vulnerable to the examination to test the top priority. Then we look at what we want to learn in this chapter? The most important it is to learn and how CPU and memory are working together, we will introduce a simple model of how memory and its address signal to find our storage unit, which is a concept addressed. Next we will explain the connection to the main memory and the CPU. So we are going to solve two problems, one problem is that we do our main memory and CPU operation speed is it does not match, CPU processing speed is much faster than main memory, then how to solve this problem? We propose two options, we designed a first embodiment of a high-performance memory is our dual-port RAM memory modules and the plurality of our. But this is clearly not enough, then we proposed the concept of cache memory, which is the cache. To note cahce is a top priority over the years examined, so we must be vigilant. The next question to be solved it is a problem of capacity, so we put forward the concept of virtual memory. Then the cache and the fast table is a virtual memory among us of this thing, we in the operating system which we still have to meet, so we have to seriously study. Then it is that we explain the semiconductor random access memory, we are going to explain the basic structure of a memory chip. Our dynamic ram and our static ram works, as well as our read-only memory its features and basic types. Finally, we should also mention some basic concepts, such as ah, memory performance metrics like memory classification, this part of it you listen to it, that is what we talk about in the first section of this lesson, basic concept.
