Which 8-bit chip was used in many of today’s TRS-80 computers?
Answer: D
Correct answer: Z-80
The TRS-80 was built around the Zilog Z-80, an 8-bit processor; the name of the machine itself echoes it. The Z-8000 is a 16-bit chip, and the other two designations are not real Zilog parts.
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Which among the following disk is fixed disk?
Answer: A
Correct answer: Hard Disks
A fixed disk is one sealed inside the drive and not meant to be taken out, which is what a hard disk is. Flash drives, Blu-ray discs and DVDs are all removable media.
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Which among the following does not affect the resolution of a video display image?
Answer: D
Correct answer: Screen size
Resolution is the number of distinguishable picture elements, which is set by the bandwidth of the signal, the raster scan rate and the count of horizontal and vertical lines. Making the screen larger spreads the same number of elements over more area - the picture gets bigger and coarser, but its resolution is unchanged.
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Which among the following printing devices produces output composed of a series of dots?
Answer: D
Correct answer: Both a and c
A wire matrix printer forms each character by firing pins at the ribbon, and a Wang image printer builds the page from dots as well. A band printer carries fully formed characters on a moving band and so prints solid type rather than dots.
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Which among the following is an example of fifth generation computer?
Answer: A
Correct answer: PIM/m
The PIM/m was one of the parallel inference machines built for Japan's Fifth Generation Computer Systems project. The ICL 2950 and IBM 1401 are earlier conventional machines.
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Which among the following is not a third generation computer?
Answer: B
Correct answer: IBM 1401
The IBM 1401 is a transistor machine of the second generation. The IBM 360, PDP-8 and HP 2115 all use integrated circuits and belong to the third.
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The number of records contained within a block of data on magnetic tape is defined by the
Answer: C
Correct answer: Blocking factor
The blocking factor is the number of logical records grouped into one physical block on tape. Blocking reduces the number of inter-block gaps and so uses the tape more efficiently; the other three names are not standard terms.
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Which among the following registers is loaded with the contents of the memory location pointed by the PC?
Answer: C
Correct answer: Instruction register
The program counter holds the address of the next instruction; that address goes to the memory address register, the word fetched arrives in the memory data register, and the instruction itself is then placed in the instruction register for decoding.
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Which among the following generation computers had expensive operation cost?
Answer: A
Correct answer: First
First generation machines used thousands of vacuum tubes, which consumed enormous power, produced great heat needing constant air conditioning, and burnt out often enough to require continual replacement. Every later generation reduced all three costs.
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