Topic 12. Organization and types of memory. 12-Mavzu. Xotiraning tashkil etilishi va turlari

Secondly memory size growing goes _
Third known value ( for example - $ 1 ) coming memory The size also increases goes _ Here basically magnetic and optics to disks relevant information is given .
Ierarxiya bo‘ylab yuqoridan pastga qarab, uchta ko‘rsatgichni o‘zgarib borishini ko‘rishimiz mumkin.
Birinchidan - xotiraga murojaat qilish vaqti kattalashib boradi. Registrlarda bu vaqt – bir necha nanasekundni, kesh-xotirada bundan salgina ko‘proqni, asosiy xotirada esa bir necha o‘n nanosekundlarni tashkil qiladi. Keyingi qatorlardagi farqlar yana ham kattalashadi – disklarga murojaat qilish vaqti kamida 10 mks larga, optik disklar va magnit lentalarda esa bundan ham katta qiymatlarga ega bo‘ladi, hamda sekundlarda o‘lchanadi.
Ikkinchidan xotira xajmi o‘sib boradi.
Uchinchidan ma’lum qiymatga (masalan - 1 dollarga) to‘g‘ri keladigan xotira hajmi ham, oshib boradi. Bu yerda asosan magnitli va optik disklarga taalluqli ma’lumotlar keltiriladi.
Figure 2 . _ Main memory
2-rasm. Asosiy xotira
Figure 3 _ _ External memories
3-rasm. Tashqi xotiralar
Basic memory . Static and dynamic memory structure _ Of the computer basic memory - his programs and information save for designed component .
Basic memory - fast memory device is also called ( Random Access Memory - RAM) (operativnoe zapominayushchee ustroystvo - OZU or called operative ) .
Asosiy xotira. Statik va dinamik xotira tuzilishi. Kompyuterning asosiy xotirasi – uning dasturlarini va ma’lumotlarini saqlash uchun mo’ljallangan komponentidir.
Asosiy xotira – tezkor xotira qurilmasi ham deb ataladi (Random Access Memory – RAM) (оперативное запоминающее устройство - ОЗУ yoki оперативка deb ataladi).
Fast memory device two type available :
1. Static TXQ ( Static RAM - SRAM) . It 's kind of memory D- triggers based on is built .
2. Dynamic TXQ ( Dynamic RAM - DRAM) . It 's kind of memory in construction triggers not used .
Dynamic TXQ - transistors and very much small from capacitors built , cells from the collection consists of will be .
Tezkor xotira qurilmasining ikki turi mavjud:
1.