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A NULL pointer is a pointer of any type whose value is zero. A void pointer is a pointer to an object of an unknown type, and is guaranteed to have sufficient bits to hold a pointer to any object. A void pointer is not guaranteed to have sufficient bits to point to a function (by in general practice it does).
Why does DMA have priority over the CPU when both request a memory transfer? The data transfer monitored by DMA controller which is called as DMA channel. The CPU is included o
Q. Diffrence between CD-R vs CD RW? A CD-R disc looks same as a CD. Though all pressed CDs are silver, CD-R discs are gold or silver on their label side and a deep cyan or gree
The MSI chip 7474 is ? Ans. MSI chip 7474 is TTL, dual edge triggered D Flip-Flop.
Explain any three policies for process scheduling that uses resource consumption information. All three policies for process scheduling are explained below in brief: 1. Fi
Which of the fastest logic: TTL, ECL, CMOS and LSI ? Ans. The fastest logic family of all logic families ECL. High speeds are possible in ECL since the transistors a
What are the two approaches used for generating the control signals in proper sequence? Hardwired control Micro programmed control
Determine the function of Dynamic model Dynamic model: Dynamic model describes how system responds to external events. The implementation of the control flow in a program must
Data buffering is quite helpful for purpose of smoothing out gaps in speed of processor and I/O devices. Data buffers are registers that hold I/O information temporarily. I/O is pe
Q. Passing Parameters through Stack? The best scheme for parameter passing is through stack. It is also a standard scheme for passing parameters when assembly language is inter
Q. Explain Processing of an Interrupt? The interrupt is processed as: Step 1: Number field in INT instruction is multiplied by 4 to get its entry in interrupt vector table.
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