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Computer Science |
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| 166)Lowest cost per bit | |||
| Processor register ---- row of ECL flip-flops | Cache ---bipolar RAM | ||
| Swapping device | Magnetic tape | ||
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| 167)A memory map is useful in the | |||
| optimum utilization of memory | diagnosis of faults in the compiled program | ||
| locating unused memory element | none of these | ||
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| 168)The storage that closely associated with the CPU of a computer is known as | |||
| virtual memory | auxiliary memory | ||
| RAM | none of these | ||
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| 169)Semiconductor memory internally consists of | |||
| electron and holes | p and n elements | ||
| array of flip-flops | none of these | ||
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| 170)Bipolar IC memories are fabricated using | |||
| high density version of MOSFET | low density version of MOSFET | ||
| low density version of unipolar transistor flip-flop | high density version of bipolar transistor flip-flop | ||
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| 171)The principle of lacality of reference justifies the use of | |||
| DMA | polling | ||
| interrupts | cache memory | ||
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| 172)Access in magnetic drum memory is | |||
| sequential and cyclic | a cyclic sequential | ||
| partially cyclic and partially random | completely random | ||
| Answer : | |||
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| 173)The refreshing rate of dynamic RAM is in the range of | |||
| 2 milli second | 2 micro second | ||
| 10 milli second | 10 micro second | ||
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| 174)The term 'Inter record gap' is associated with | |||
| magnetic disc | punched card | ||
| magnetic tape | paper tape | ||
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| 175)A 1024x4 ROM will require a minimum of ________ bits input address to specify a 1024 words of 4 bits each | |||
| 4 | 8 | ||
| 10 | 16 | ||
| Answer : | |||
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| 176)To select between two memories of 16 words each, it will require a | |||
| 1 to 2 decoder | 2 to 4 decoder | ||
| 4 to 12 decoder | 4 to 16 decoder | ||
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| 177)The minimum number of MOS transistors used to make a dynamic RAM cell is equal to | |||
| 1 | 2 | ||
| 3 | 4 | ||
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| 178)A EPROM is a device which can be | |||
| Electrically programmed and electrically erased | Electrically programmed and reased by ultraviolet light | ||
| Not programmable at all | Pre-programmed by manufacturer only | ||
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| 179)For fast transfer of data from a disc to memory which of the following will give the faster speed ? | |||
| Memory mapped IO | Addressing via accumulator | ||
| DMA | none of these | ||
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| 180)In 4096x8 EPROM how many address lines require | |||
| 8 | 10 | ||
| 12 | 16 | ||
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