कम्प्युटर आधारभूत ज्ञान र हार्डवेयर – Computer Fundamentals & Hardware MCQ
कम्प्युटर आधारभूत ज्ञान र हार्डवेयर – कम्प्युटर र IT
Computer Fundamentals & Hardware · Computer & IT (Technical) · ५७४ प्रश्न
५७४ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कम्प्युटर आधारभूत ज्ञान र हार्डवेयर: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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The six general-purpose 8-bit registers of the Intel 8085 are:
सही उत्तर: घ) B, C, D, E, H and L
The 8085 has B, C, D, E, H and L (usable as pairs BC, DE, HL) besides the accumulator A.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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How many flag bits does the Intel 8085 actually use in its flag register?
सही उत्तर: ख) 5
The 8085 has five flags: Sign, Zero, Auxiliary Carry, Parity and Carry; the other three bits are unused.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In isolated (I/O-mapped) I/O, as used by the 8085 and x86 processors, the CPU accesses device ports using:
सही उत्तर: ग) Special IN and OUT instructions
Isolated I/O gives ports a separate address space reached only through dedicated IN/OUT instructions, unlike memory-mapped I/O.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In asynchronous data transfer, the method in which source and destination exchange control signals such as 'data valid' and 'data accepted' is called:
सही उत्तर: क) Handshaking
Handshaking uses a pair of control signals so each side confirms the other's action, making the transfer reliable without a common clock.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In daisy-chain priority interrupt handling, the priority of a device is decided by:
सही उत्तर: ख) Its position in the chain, the device nearest the CPU having the highest priority
The acknowledge signal passes from device to device; the first requesting device it reaches captures it, so position fixes priority.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The table that holds the starting addresses of the interrupt service routines is called the:
सही उत्तर: घ) Interrupt vector table
When an interrupt occurs, the CPU uses the interrupt number to look up the ISR address in the interrupt vector table.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Compared with vertical microinstructions, horizontal microinstructions are:
सही उत्तर: क) Wide, with little encoding, so many control signals can be issued in parallel
Horizontal microcode gives roughly one bit per control signal, so words are long but allow much parallelism and need no decoding.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Booth's algorithm is used in computer arithmetic for:
सही उत्तर: ग) Multiplying signed numbers in 2's complement form
Booth's algorithm multiplies two's complement numbers directly by recoding runs of 1s in the multiplier.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An FPGA implements the user's logic mainly by means of configurable:
सही उत्तर: ग) Look-up tables (LUTs) joined by programmable interconnect
FPGA logic blocks are built from small LUTs and flip-flops, wired together by programmable routing that can be reconfigured.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which programmable logic device lets the user program both its AND array and its OR array?
सही उत्तर: क) PLA
A PLA has both arrays programmable; a PAL has programmable AND with fixed OR; a PROM has a fixed AND (decoder) with programmable OR.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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