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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)).
Q. Illustrate working of T Flip-Flop? T (Toggle) flip-flop is attained from JK flip-flop by combining inputs J and K together. The implementation of T flip-flop is displayed in
I need to write a 32 bit adder in MIPS without using the Add command and a divider as well.
The number 140 in octal is equivalent to decimal number ? Ans. (140) 8 = (96) 10 As 1 x 8 2 + 4 x 8 + 0x 1 = 64 + 32 = 96
"Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''a''-''z'') and the ascii values will starts from
Which device consume minimum power ? Ans. Minimum power consume by CMOS as in its one p-MOS and one n-MOS transistors are connected in complimentary mode, so one device is ON a
explain the various types of computer systems
Clear operation The clear operation compares words present in A and B and produces an all 0's result if two numbers are equal. This operation is achieved by the exclusive-OR mi
Define SR Flip Flop - SR latch with NOR Gate? The SR Flip flop neither is a circuit with two cross-coupled NOR gates or two cross-coupled NAND gates. SR
What are the characteristics of DRAM? Low cost High density Refresh circuitry is needed
Define Realization of one flip flop using other flip flops? It is probable to implement a flip flop circuit using any other circuit. Universal block diagram is shown below.
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