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Q. Illustrate Single In-line Memory Modules?
From early days of semiconductor memory till the early 1990s memory was manufactured, brought and installed as a single chip. Chip density went from 1K bits to 1M bits and beyond though every chip was a separate unit. Early PCs generally had empty sockets into that extra memory chips could be plugged if and when purchaser required them. At present a different arrangement is frequently used known as SIMM or DIMM.
A group of chips typically 8 to 16 is mounted on a small printed circuit board and sold as a unit. This unit is known as a SIMM or DIMM depending on whether it has a row of connectors on one side or both sides of board.
A typical SIMM configuration may have 8 chips with 32 megabits (4MB) each on SIMM. The whole module then holds 32MB. Many computers have room for 4 modules giving a total capacity of 128MB when employing 32MB SIMMs. The first SIMMs had 30 connectors and delivered 8 bits at an instance. The other connectors were addressing and control. A later SIMM had 72 connectors and delivered 32 bits at an instance. For a machine such as Pentium that expected 64-bits at once 72-connectors SIMMs were paired each one delivering half the bits required.
FAILURES Since reliability engineering is focused on the survivability or absence of failures, it is more concerned about failures, understanding their causes and defining re
Q. Illustrate why does a tea kettle sing? Answer:- There is a little attachment with a hole in it which acts as a whistle. It is inserted into the spout of the kettle as w
#what is the history of computer science
Q. How to Changing the Directory in DOS? You can change the directory. After changing the directory, the new directory becomes the default directory. For example, you change th
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What is a demultiplexer? Ans: Demultiplexer: This is a logic circuit which accepts one data input and distributes this over some outputs. This has one data input, m selec
The PVM system supports functional and data decomposition model of parallel programming. It attaches with C, C++, and FORTRAN. The C and C++ language bindings for the PVM user inte
What is a disk drive? The electro mechanical mechanism that spins the disk and moves the read/write heads known as disk drive.
Details about nanoprogram
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