Sagot :
Réponse :
1. The topic of the video is to show how computer memory works
2. In may 2016
3. Basic units are called ‘bits’or ‘binary digits’
4. Central Processing Unit and it is compared as the brain.
5. Random access memory
6. Because all locations within the short-term memory can be accessed in any order (random order)
7. DRAM is dynamic random access memory and it’s called dynamic because it only holds charges briefly before they leak away requiring periodic recharging to retain data.
8. SRAM (static ram)
9. Ram and cache can only hold data as long as they’re powered.
10.
Magnetic storage : data is stored as a magnetic pattern on a spinning disc coated with magnetic film negative point : the latency for such drives is 100000 times slower than that of DRAM ; the heat can demagnetize hard drives
DVD and Blu-ray : Bits are encoded as light and dark sports using a dye that can be read by a laser. negative point : lower capacity; the heat can degrade the dye
Solid state drives (such as flash sticks) : no moving parts, use floating gate transistors that store bits by trapping or removing electrical charges within their internal structures. Negative point : charge leakage in floating gates Also repeatedly writing to floating gate transistors corrodes them eventually rending them useless.
11. No because it degrades fairly quickly because of the heat generated from a device and its environment.
12. Less than a ten year life expectancy
13. I think this video is interesting because it exposes how computer memory works and the different devices we use to store such memory. I think however that things have evolved and now we have what we call ‘cloud storage’ such as Google Docs we send files to a data server maintained by a cloud provider instead of (or as well as) storing it on their own hard drives. We could say that computer memory is more stable in 2020 but it still lacks security.
14.
La mémoire d'un ordinateur est constituée de dispositifs physiques capables de stocker temporairement des informations, comme la RAM (mémoire aléatoire). Lorsque l'ordinateur est hors tension, tout ce qui est stocké dans la mémoire vive est perdu. Si l'unité centrale doit attendre un périphérique de stockage secondaire, comme un disque dur, l'ordinateur sera beaucoup plus lent. Le stockage auxiliaire amovible se présente sous la forme de clés USB, de cartes mémoire SD (qui se branchent sur des appareils photo numériques), de disques durs et de CD/DVD ROM.
Explications :
Voici les éléments de réponse, j’espère que ça vous aidera malgré le délais.
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