Computer hardware – part 17: it would prefer the different memory types us, if there were only one kind of memory: big, fast, cheap. Unfortunately, these three properties contradict each other. Generally, large stores are slow and relatively cheap and fast memory are small, but expensive. We have seen the latter as an example of the CPU cache. For this reason, there are different types of memory in the PC.
First, we can divide this into external and internal memory. External storage such as hard drives, floppy drives, DVDs, or USB flash drive is connected in any manner via cable to the motherboard. In this mode, the backed-up data be grouped together in blocks of several bytes and filed. Later, when we look at the access times, we see the advantage. Internal memory is either soldered to the motherboard or inserted into an available slot. In contrast to the external memory, there are no moving parts, and therefore significantly less (no”would be wrong to do this later more if necessary) wear. ROM (read only memory) and RAM (random access memory) belong to this type. In addition, the existing data to attract byte way.
Rome is also known as memory. As the name suggests, does not write in this space. This has the advantage that it is virtually immune to harmful changes in case of failures or attacks. There are exceptions such as EPROM & co, as we have learned in the section about the BIOS, but that should not bother us for the basics. A ROM has the further advantage that it loses no data as soon as the power is gone. RAM can optional be addressed as also a ROM, memory. I.e., you can pick a single byte from the far corner without any restrictions. In the case of RAM, we can write even on the same way. However, there is still a crucial difference: A RAM is volatile. Turn off the power, the data is gone. They should be so previously saved what takes the operating system to shutdown. In addition, the RAM must therefore in the Start the computer again until filled are. In the next article, the RAM more closely scrutinized is taken. See also: computer hardware – conveys clear – part 1: introduction to computer hardware – understandable conveys – part 2: the real innovations in computer hardware – number systems computer hardware clearly conveys – part 3: – clearly conveys – part 4: number systems 2 computer hardware – understood conveys part 5: binary numbers of computer hardware – understood conveys part 6: coding standards computer hardware – understandable conveys – part 7: the personal computer computer hardware – mediated understandable – the basic structure of the CPU computer hardware part 8: – conveys clear – part 9: Conveys the frequency of computer hardware – understandable – part 10: gives the CPU cache computer hardware – understandably – part 11: gives the CPU cache 2 computer hardware – understandably – part 12: the motherboard computer hardware – understandable conveys – part 13: motherboard 2 computer hardware- Provides understandable – part 14: gives the motherboard 3 computer hardware – understandably – part 15: conveys the BIOS computer hardware – understandably – part 16: the memory of author Michael Sander also writes articles for sites where you can find cheap E.g. sofas in his spare time.