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Q. Describe Memory and Memory unit?
Input devices can fetch instructions or data only sequentially though a program may or may not be executed sequentially because looping, jump, decision-making instructions are frequently encountered in programming. As well more than one data element may be needed at a time. Hence a temporary storage area is required in a computer to store temporarily the instructions as well as the data. This element is termed as memory.
Memory unit stores all information in a group of memory cells like a group of 8 binary digits (which is a byte) or 16 bits or 32 bits and so on. These groups of memory cells or bits are known as memory locations. Every memory location has a unique address and can be addressed individually. Contents of desired memory locations are supplied to CPU by referring to address of memory location. Amount of information which can be held in main memory is termed as memory capacity. Capacity of main memory is measured in Mega Bytes (MB) or Giga Bytes (GB). One-kilo byte denotes 210 bytes that are 1024 bytes (or just about 1000 bytes). A Mega byte denotes 220 bytes that is near about a little over one million bytes and a giga byte is 230 bytes.
A project having of a set of jobs and a set of precedences, where precedence (i; j) show that job j cannot begin before job i is completed. Let c i be the duration of job i. We wi
Which operations is performed more efficiently by doubly linked list than by singly linked list Deleting a node whose location is given.
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Illustrates about Metal Fix. A Metal Fix implies that only the upper metal interconnects layers are influenced. Connections may be made or broken, but new cells may not be adde
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A friend has promised to log in at a particular time. However, he needs to be contacted as soon as he logs in. The shell script checks after every minute whether he has logged in o
what is homogeneous coordinate system
Discuss about Charles Babbagein brief Mechanism for advancing or reversing of control card were allowed therefore enabling execution of any desired instruction. In ot
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