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What is Random access memory (RAM)
This is a volatile memory (i.e. contents are lost when computer is switched off). A user can write or delete data and read the contents. Before a program can be ran it should first be loaded into RAM that allows CPU to access the program. Battery-backed RAMs overcome data loss on switching power off though are outside the scope of these booklets.
(NOTE: For completeness, it's worth mentioning that two types of RAM exist termed as SRAM (static RAM) and DRAM (dynamic RAM) - SRAM doesn't need to be constantly refreshed to retain its memory unlike DRAM. Also consider that computers use cache which is a part of memory made from SRAM. Memory caching works as programs generally access the same data or instructions over and over again. By retaining as much information as possible in SRAM, computer operates more quickly (cache is generally termed level 1, 2 or 3 (termed L1, L2 or L3)).
Describe the roles of association Note that each association has roles. For instance, in Figure we can see that two classes, Student and University, have their predefined roles
Reprography: Reprography, as a term, has gained international recognition in 1963. It includes "photocopying , microcopying, duplicating and in-plant printing and is character
define multipoint communication
What do you mean by polynomial and exponential bounds? Bounds of the form nc for c greater than 0 .such a bound are known as polynomial bounds. Bounds of the form 2(n ) .suc
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LAN is a privately - owned computer networks confined to small geographical area, like a factory or an office widely used to connect office PCs to share resources and information.
How many flip-flops are required to construct mod 30 counter ? Ans. Mod - 30 counter +/- requires 5 Flip-Flop as 30 5 . Mod - N counter counts overall ' N ' number of state
Handling Multiple Devices Interrupt Priority Continue to accept interrupt requests from higher priority components Disable interrupts from component at the sa
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