The first firm to mass-market a microcomputer as a personal computer was
Answer: C
Correct answer: Radio Shack
Radio Shack brought out the TRS-80 in 1977 and sold it through its own chain of shops - the first microcomputer to be genuinely mass-marketed as a personal computer, alongside the Apple II and the Commodore PET of the same year. IBM did not enter the market until 1981.
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A register organised to allow move-left and move-right operations is called a ____
Answer: D
Correct answer: Shift register
A shift register moves its contents one bit position left or right on each clock pulse. That makes it the natural way to convert between serial and parallel data, and shifting left or right by one is also multiplication or division by two.
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In most IBM PCs, the CPU, the device drivers, memory, expansion slots and active components are mounted on a single board. What is the name of this board?
Answer: A
Correct answer: Motherboard
The motherboard is the main board on which the processor, memory, expansion slots and supporting chips are mounted and interconnected. Anything that plugs into it is a daughterboard.
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People often call ______ as the brain of computer system
Answer: C
Correct answer: Central Processing Unit
The CPU is called the brain because it does the two things a brain is credited with: it computes (in the ALU) and it directs (through the control unit). The control unit and ALU are its parts, not the whole.
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A dumb terminal has
Answer: D
Correct answer: a keyboard and screen
A dumb terminal has only the means to send keystrokes and display what it is sent - a keyboard and a screen, and no processing of its own. All the work is done by the host it is connected to. A terminal with a processor and memory of its own is an intelligent terminal.
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Mnemonics, a memory aid, are used in which of the following languages?
Answer: B
Correct answer: Assembly language
Assembly language replaces the binary operation codes of machine language with short mnemonics - ADD, MOV, JMP - that a person can remember and read. An assembler translates them back to the binary the processor needs. Machine language has no mnemonics at all, and high-level languages use ordinary words and expressions instead.
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On an abacus, the value of each bead in the upper deck (heaven) is
Answer: C
Correct answer: 5
On an abacus the bar divides the beads into two decks. Each bead in the upper deck - heaven - is worth 5, and each in the lower deck, earth, is worth 1. A column with one heaven bead and three earth beads pushed towards the bar therefore reads 8.
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Microprocessors as switching devices are for which generation computers
Answer: D
Correct answer: Fourth Generation
The fourth generation is defined by the microprocessor, which put the whole central processing unit on a single chip. The first three generations used vacuum tubes, transistors and integrated circuits respectively.
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A compiler is a translating program which
Answer: D
Correct answer: All of above
All three describe a compiler. It translates a high-level language into machine language; it does so for the entire program at once, producing an executable file; and having finished, it takes no part in running it. That last point is what separates a compiler from an interpreter, which translates and executes line by line and must be present throughout.
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An integrated circuit is
Answer: D
Correct answer: Fabricated on a tiny silicon chip
An integrated circuit is a complete circuit - transistors, resistors and the connections between them - fabricated together on one small piece of silicon. Making them all at once, by the same photolithographic process, is what makes the IC dramatically cheaper than the equivalent discrete components, not costlier.
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