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Central Processing Unit:
A Central Processing Unit (CPU) in a computer system is an extremely fast device as compared to the main memory, but it can not work on its own. It depends on the main memory that sends data and instruction when required for processing.
In other words, we can say that even memories with smaller size (i.e. primary memory) have very high access time (time taken by CPU to access a location in memory), which reduces the overall speed of a computer.
Computer memory can also be categorized on the basis of Volatile and Non-Volatile characteristics. Non-volatile Memory is a type of computer memory which can retain the stored information even if the power is shut down. Examples of Non-Volatile Memory are Read-only memory (ROM), flash memory, optical discs etc. On the other hand, a Volatile memory loses its content when the power goes off. Random Access Memory (RAM), which is the most common form of Primary Storage, is a type of volatile memory. When the computer is shut down, everything contained in RAM is lost.
Consider the one-time pad encryption scheme to encrypt a 1-bit message m, and assume m is chosen with uniform distribution from message space M={0,1}. Let E1 be the event "message
CONCEPT IN PROGRAMMING LANGUAGE: A Programming Language is used to design and describe a set of instructions and computations to be executed by a computer. To do programming,
QUESTION a) What is Time Division Multiplexing (TDM), illustrate your answer with a diagram b) Describe four types of RTCP messages c) i) What is silence compression in I
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In computing, a system call is how a program asks for a service from an operating system''s kernel. This may contain hardware related services (for example accessing the hard disk)
Electronic mail is another PC to PC and PC to mainframe data exchange. If you subscribe to an electronic mail service, it will enable your PC to gain access to a 'mailbox' on a ma
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